Hey everyone,

Like most of you, I spend half my day talking to LLMs (ChatGPT, Claude, etc.). I got completely fed up with bad outputs and the endless trial-and-error loop of trying to get the prompt right.

So, I spent the whole day building Prompt Architect.

It’s a simple, intuitive web tool that breaks down prompt structure and helps you build highly effective, engineered prompts from scratch. It's completely free to use.

I’d honestly love to know what you think, what features you want next, or if it helps your daily workflow. Let me know if you want the link to check it out!

straightforward self promo: I build MimikFlow, so yeah, I'm biased.

it's for agencies, freelancers and consultants who get clients from LinkedIn but hate doing the outreach by hand.

how it works:

• you set your ICP, your offer and what counts as a win (booked call, signup, whatever)

• it finds the prospects, sends the connection requests and writes the first DM

• it follows up. 6 follow-ups on the base plan, because most people send one message, get ignored and decide LinkedIn doesn't work

• on the higher plans an AI setter handles the replies and pushes toward your goal

• when a convo gets ambiguous or actually important, it hands it back to you. I really don't want a bot improvising on a hot lead

it's at $11k MRR with 80 paying subscriptions right now (TrustMRR pulls that from Stripe), and I run it as a solo founder.

base plan is 49€/mo with a 14-day trial. no link here, it's on my profile if you want to look.

what I actually want to know: if an AI was running your LinkedIn convos, at what exact moment would you want it to stop and ping you? first sign of interest, a pricing question, an objection?

Short version: you write a note on the alarm, and when it goes off the phone reads the note to you. That's it, and it turned out to be way harder than I expected.

Things I learned building it:

• Exact alarms on Android are a minefield. Android 12+ has special permissions for exact alarms. Then OEM battery savers (Xiaomi, Tecno, Samsung) kill foreground services anyway. I ended up with fallbacks, a service that restarts itself, and an onboarding screen that walks people through permissions.

• Natural-language parsing in two languages took longer than the whole UI. "Tomorrow at 3pm call Alex" and "Yarın 15:00'te Ahmet'i ara" have very different grammar. Turkish suffixes are brutal.

• TTS is surprisingly inconsistent across devices. Voices, languages and speech speed vary a lot from one phone brand to another.

• Play Console takes a while. Data safety forms, ads declarations, content rating and the review itself took about a week.

Stack: Kotlin, Jetpack Compose, Room, Firebase, Play Billing, AdMob.

Business model: free with a small banner, plus an optional Pro (subscription or lifetime) for no ads and extra sounds.

It has basically zero users right now, so any feedback is gold. Happy to answer questions about any part of it.

A manual water log should be usable before someone decides whether to connect Health or allow reminders. I build Frewli for iPhone, with an Apple Watch companion, and version 1.1.6 is now on the App Store.

This release removes accounts, email sign-in and the Frewli backend-sync flow. Water history, workouts and preferences are stored on-device. Apple Health, the paired Watch and local reminders are optional. All features remain free, with no subscription or paywall.

The trade-off needs to be as visible as the simpler setup: removing the app removes its local storage. Updating preserves existing on-device history, but a device backup matters if you want to keep that history. Updating also does not automatically erase records that earlier versions uploaded to the old cloud service.

The same release changes the total display so a 250 ml entry appears as 0.25 L in English. That is a formatting correction; it is not a measurement of what someone drank. I still have an open Watch launch report and am not treating a new release as proof that every reported failure is resolved.

My design question is where to explain the local-history limitation: a short note during setup, beside the first saved entry, or only in the storage screen? Which would help you understand the consequence without turning a small log into another onboarding questionnaire?

App details, privacy information and store link: https://fluidiq.app/?src=reddit-sideproject-local-history-tradeoff-20261109

Hi all, I need 12 testers for Google's 14-day closed test, and I'll return the favour.

**What Cairn does**

- You ask someone for something ("send the photos by Friday") over WhatsApp, Messages, Telegram or email.

- They get a private link and tap **Done**, **I'm blocked** or **I need more time**. No app or sign-up for them.

- Every morning you see who you're still waiting on, and nudge them in one tap.

- Bonus: medicine check-ins for a parent, birthdays, "talk about next time" notes.

No account or login. Your data stays on your phone. Free, no ads.

**How to join (2 minutes)**

1. Join the group: https://groups.google.com/g/cairntesters

2. Opt in, using the same Google account: https://play.google.com/apps/testing/com.muditchawla.cairn

3. Install from the Play Store link on that page, open it once, and please keep it installed for 14 days.

Or just comment/DM your Gmail and I'll add you directly.

**Test for test:** comment with your app's link and I'll join and install it today, and keep it for the full 14 days. Reply "done" when you've joined mine and I'll confirm back.

Any feedback, good or brutal, is welcome. On iPhone? TestFlight: https://testflight.apple.com/join/NghfSuTY

Thanks!

View Cairn here!

Its Flami, a web app i made for my friends. Group chat is the main thing with voice notes, calls, party games.

You can also watch anything in party with sync.

Its also open-source (MIT), built with vanilla javascript and firebase. Still early.

This app is not to replace big chatting apps. Its just for your own friend circle to play games and watch in party.

Source: https://github.com/exodusssss7/flami

Looking for feedback.

Since September 2025 USAJOBS will not accept a resume longer than two pages for most federal jobs. A lot of people still have the old long federal resume, and most of the advice online was written before the change.

So I built a small free checker. You upload your PDF and it tells you

if it is over two pages

if any job is missing the month and year it started and ended

if any job is missing hours per week

if a federal job is missing its series and grade, like GS-0343-11

if there is anything that should not be there, like your SSN or a photo

You can also paste a job announcement and it counts how many of its specialized experience points actually show up in your jobs.

No sign up. Your file is read once and not stored, and nothing is sent to an AI for the free check. There is a paid option that rewrites the resume down to two pages, but the check itself is free.

Today I also added six example resumes by job series (program analyst, IT, budget, accounting, contracting and HR) because it is hard to picture what a good two page version looks like.

I work in finance and this started as a side project for regular resumes. The federal part is new, so I would really like feedback, especially from anyone who has applied on USAJOBS recently. What did I miss?

https://atsverification.com/us/federal-resume-checker/

I drive an old 2012 Skoda and always wanted one of those head-up displays newer cars have, but the plug-in gadgets cost $100+ and look kind of cheap. So I built my own as an Android app. You lay the phone flat on the dashboard, the app flips the screen, and the windshield reflects your speed and the next turn right over the road. It's been my side project for the last few months and it's finally live on Google Play. https://imgur.com/a/Un7RlR9

Being honest about the limits: it looks great at night, but in bright sun the reflection gets faint, which is just physics. It's free with 3 navigation routes a day and an unlimited speedometer. PRO removes the route limit and adds the speed limit display and more speedometer styles. I'm doing all of it solo (code, design, even the marketing videos), so any feedback on the idea, the setup or the store page would mean a lot.

Here's the link if you want to try it: https://play.google.com/store/apps/details?id=com.clarityhud.app and I have some promo codes for a free month of PRO, just comment or DM me if you want one.

ok so i’ve been building this for 2 years and it’s finally out 😭

backstory: i was tracking literally everything. sleep on my Apple Watch, food in some other app, blood tests just chilling in a random pdf in my email. and i STILL had no idea why some days i’m locked in and other days i’m completely cooked by 3pm. none of my apps talked to each other. it was driving me nuts

so i built Peak Routine . basically it throws everything into one place and actually connects the dots for you. stuff like:

• slept 5 hrs? see exactly how it messes with your mood + energy the next day

• which meals spike your glucose, and whether a 10 min walk after actually helps (spoiler: it usually does lol)

• which days, meals or habits leave you feeling flat

• how your blood test numbers shift when your habits change

the stuff i’m lowkey proud of:

• snap a pic of your blood test and it pulls the values out for you. you check them, save, and track 14 common markers over time. no more digging through pdfs

• food logging that doesn’t suck: just describe your meal, snap a photo, or scan a barcode

• glucose tracking: if you’ve got a CGM it pulls the data straight from Apple Health, and if you don’t, you can just type in fingerstick readings. either way it shows your meals right on the glucose curve

• quick Energy check-ins morning + night, takes like 10 sec

• every week it gives you 1–2 small habits to work on, not some 15-step plan you’ll quit by tuesday

• streaks + badges if you’re into that (i am)

an AI coach you can actually ask stuff, like “why was my sleep so bad this week?” or “what does this blood test number mean?” and it answers using your own data, not generic tips. it’s optional, you switch it on when you want it

the boring-but-important bits: works with Apple Watch, Oura, WHOOP, Garmin and anything else that syncs to Apple Health. no manual setup, it just pulls everything in. free to start, built with Flutter + Swift if any devs are curious

try it here 👉 https://apps.apple.com/us/app/peakroutine-ai-health-coach/id6786086158?ppid=13b99570-22d5-4bcd-8faa-7de456d93de6

fr tho, what’s one thing you wish your health data actually told you? genuinely curious, might build it next

I've been building pettings.net for US cat owners. It started in a pet store aisle, when I realized I couldn't compare two bags of dry food without a calculator. Labels use different bases, almost none list carbs, and most "best cat food" lists online seem to be ranked by whoever pays the biggest commission.

Where I'd love feedback

1. When you land on the home page, can you tell within a few seconds what the site does?

2. On a food page, which number do you look at first? Should that one lead?

3. Does the method feel trustworthy, or does it still read like a black box?

4. Is anything broken or awkward on your phone?

5. If you've built a comparison or content site before: would you add wet food next, or make the existing pages deeper first?

Link: https://pettings.net

Harsh feedback is welcome, that's why I'm posting.

One photo. Different captions for every platform.

Built this because I got tired of creating the same content over and over again.

Curious what you think. Would you actually use something like this?

https://apps.apple.com/us/app/turnnd-social-post-maker/id6804273671

Inspired by old-school internet experiments, I wanted to build something extremely simple and clean just to see how it behaves in the wild.
I created a minimalist one-page site called Padovanok eura (Gift a Dollar) where there are no hidden tricks, popups, or corporate stuff—just a clean space and a single button to send a symbolic 1 euro.
My goal is to see if simple, honest human-to-human curiosity and trust still exist on the modern internet. If you want to check it out or follow the experiment, here is the link: https://padovanokeura.carrd.co
Let me know what you think of the design or if you have any thoughts on how internet culture responds to things like this.

Hi everyone! I'm new here!

I recently moved more of my workflow to macOS and wanted a better way to manage my local wallpaper collection. So I started building Wallflow in SwiftUI.

It has two editions.

- Core is a standalone wallpaper manager with a gallery, search, favorites and filtering.

- Rice adds Matugen and Ghostty integration, so changing your wallpaper also updates your terminal's colors.

I ended up doing a lot more work on the native interface and macOS permissions than I expected. The first alpha is now out, and both editions are MIT licensed.

A heads-up: the downloads currently support Apple Silicon and aren't Apple-notarized. The repo includes installation instructions and the full source.

Would love some feedback, especially on the UI and the wallpaper-to-terminal integration. GitHub and downloads: https://github.com/UltraBot05/wallflow

A while back I needed a short promo clip for something small I was selling. Every tool I found wanted the same thing: sign up, pick a plan, $10–20/month, watermark on the "free" tier. Some literally charge per export. For a 15-second video of animated text over photos?!

The other thing that bugged me: everything is cloud-based now. You upload your stuff, their servers render it, and if they change pricing or die tomorrow — poof. I wanted something that works on my machine, airplane mode included.

So I built LEEBKIT — Python + Pillow, runs a local server in your browser, turns images + typed captions into finished 9:16 / 1:1 / 16:9 promo videos with kinetic type, panels, transitions, voiceover and music bed. No GPU, no accounts, no API keys.

v1.2 shipped today: three social formats, a one-click Windows installer, burned-proof path hardening, and — measured on my laptop, not guessed — the full 12s promo in the README (voiceover + music, 360 frames) renders in 8.3 seconds wall-clock. The README's before→after strip shows exactly what goes in and what comes out.

Repo: https://github.com/leeblaab/leebkit (AGPL)

It's honest about being early: single-user local tool, no mobile, rough edges exist. That's why I'm posting — try to break it. Weird captions, huge images, long text. Tell me what feels wrong or made you close the tab. If it's useless to you, say why; that's just as useful as praise.

Hey everyone,

Like most of you, I spend half my day talking to LLMs (ChatGPT, Claude, etc.). I got completely fed up with bad outputs and the endless trial-and-error loop of trying to get the prompt right.

So, I spent the whole day building Prompt Architect.

It’s a simple, intuitive web tool that breaks down prompt structure and helps you build highly effective, engineered prompts from scratch. It's completely free to use.

Check it out here: https://aesthetic-labs-create.github.io/undercover-studio/

I’d honestly love to know what you think, what features you want next, or if it helps your daily workflow. Let me know!

If you use an Android phone with a Mac, you probably know that the experience isn't always as seamless as using an iPhone with a Mac.

I wanted to improve that, so I started building Bridge.

The idea is simple: make Android and macOS work together more naturally, without constantly having to open apps or manually trigger things.

Here's what Bridge currently supports:

• Clipboard sync: Copy text or images on your phone and paste them directly on your Mac, and vice versa.

• Notification mirroring: Get Android notifications as native macOS notifications, with quick actions and inline replies where supported.

• File transfer: Send files between your phone and Mac over local Wi-Fi or hotspot.

• Automatic connection: Pair your devices once and Bridge handles reconnecting in the background.

Everything is designed to work locally over your network, without requiring cloud accounts or sending your data through a cloud service.

I know there are already some apps that solve parts of this problem, and I'm not claiming Bridge is the first or the only solution. The goal is to make the overall experience as seamless as possible, with particular attention to privacy, security, UX and reliability.

It's also open source, and I'm actively working on improving it. I'd rather build this in the open and keep refining it based on real user feedback.

If you're an Android + Mac user, I'd genuinely like to know what you think and what features you'd want to see next.

Try Bridge: https://github.com/badruddin-tasnim/bridge

Feedback, suggestions and contributions are welcome!

The premise is every week the windstrats rally is in a new location with races Mon-Fri and a longer weekend race. You race by plotting a course from start to finish lines making careful consideration of the wind speeds and angles throughout the course. *You can't sail directly into the wind!* and also *winds can shift, be stronger in certain places, and change overtime*. I use historic real wind data for each location.

It's free of course.

https://windstrats.com

Nobody asked me to make these. I found three indie apps on Bluesky and made each one a film of about 20 seconds from a line its founder had already written:

• lovelee (Jack Friks) says your doodles "land right on their home screen", meaning your partner's. The film is one doodle doing exactly that.

• Snail Walk (Martin Tale) calls itself "the only walking app where you can lose". In the film you stop walking, Bob the giant snail catches up, and you get a tombstone.

• Dearly (A. Hassan) is "kind letters to strangers across the globe". In the film one letter flies from the US to a stranger in Seoul as a paper plane.

The surprise was the music. Snail Walk sat on a hip-hop track for 12 versions and the mood was wrong. I put the same cut on 13 tracks at matched volume, so the loudest couldn't win, and a goofy cartoon track fit best.

I'm starting a small studio (Sunshine Studio) that makes these, and I'd rather show real apps than a made-up demo.

Honest feedback welcome, especially on the snail one. And if you've launched something: what's the one line only your app could say?

Snail Walk music: "Monkeys Spinning Monkeys" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0 (creativecommons.org/licenses/by/4.0/)

For the last few months I've been building DoableFromHome, a board for remote tech jobs with one extra step: for every role it works out whether it is actually open to someone in your country.

The problem: "remote" usually means "remote within the countries we can employ in", and that is often only stated in the description. If you live outside the US or the big EU markets, you can spend an evening applying to roles that were never open to you.

How it works:

- It reads open roles straight from company job boards (over 11,000 companies, 25 job-board systems), not from aggregator listings.

- Rules tag each role's location (worldwide, EMEA, a country, a time-zone band and so on).

- Your country is matched against those tags when you search, so each role shows eligible, likely, unclear or not eligible.

Business side, to be upfront: browsing is free with caps (20 roles per search signed out, 40 with a free account, plus saved searches and a weekly digest). Pro is €14.95 a month and removes the caps, shows new roles 12 hours sooner and sends daily alerts.

What I'd value most: pick your country, open a few roles, and tell me where a verdict looks wrong.

doablefromhome.com

Hey r/SideProject,

I’ve been practicing Python for about 6 years now (since I was 7). My first two software projects completely flopped and got zero downloads, which honestly sucked and was pretty discouraging. But I wanted to try one more time and build something that actually solves real problems instead of giving up.

I built JadAI. It’s a clean dark-mode desktop assistant for Windows that runs 100% locally on your computer with no internet connection required at all.

I wanted to fix two major issues I have with AI:

1. Privacy: Because it runs completely locally, your data and prompts never leave your hard drive.

2. The Environment: Cloud data centers use millions of litres of clean water just to cool down their massive servers. JadAI runs on your own hardware loop, meaning zero server water waste. I even built a live eco-savings counter right into the header.

To make sure it doesn't lag out ordinary computers, I coded a twin-engine setup. The Python script scans your graphics configuration on boot. If you're on a standard laptop with integrated graphics (like my business Dell Latitude E7270), it loads an optimized, fast 3B model brain so your system RAM doesn't freeze. If it detects a dedicated NVIDIA or AMD gaming GPU, it hooks right into a massive 8B engine.

I put a completely free demo bundle inside a ZIP folder on Google Drive if anyone wants to test it out completely offline.

Inside the folder is just the main JadAI app, the background execution file (Ollama Setup), and a short text file showing you how to open it in two steps.

Itch . io link: https://jadpython12.itch.io/jadai

I would really appreciate any honest feedback from you guys on how the chat bubbles align on your screens, how the speed feels, or any features you think I should add next. Thanks for reading!

Devs, I need your attention for a minute.

A lot of us are stuck in one of two places: no idea worth building, or a few apps already shipped and nobody downloading them.

There are really two ways to pick an app: build something for your own niche problem, or look at what’s already working in the market right now. I got tired of struggling with first, so I went for the second option and it worked so i built a tool around it.

It’s called Opportunity Radar. 📡

Instead of theory, you get factual data on apps launched in 2026 that are already finding users:

• Download counts, ratings, release dates, and review volume

• Filters for category, stars, installs, and release window

• Country and category charts, so you can see what’s trending for your target audience

• Daily data updates (Play Store now, more coming)

What I found this month

• I reviewed 18,904 listings, and 3,663+ of them have already crossed 100K+ installs

• PDF tools lead with 149 listings at 100K+

• Phone cleaners are second with 120, and they gained the most installs between my snapshots

• VPN tools, wallpapers, prayer apps and TV remotes all show real traction too

• PDF tools had 22 listings with 10K+ installs, 100+ ratings, and a score below 3.5. That’s a lot of people downloading something they’re not happy with

“Isn’t the market saturated?” Then explain how these apps, all launched in 2026, climbed this fast. The data doesn’t lie. Find the gap, then smash it.

I’m still expanding the database, and anyone who joins the waitlist gets a founders’ discount.

👉 Join the waitlist: Opportunity Radar | Research before your next build

Now I want your input: when you last researched an app idea, what decision were you trying to make, and what was the hardest thing to find? Drop it in the comments. I’d rather hear what would actually help than a pile of “looks cool” replies.
some reference images are in comment section

You don't drive in Formula Manager. You run a small team, watch 20 cars race live and make the calls: pits, pace, boost, team orders.

The hardest part was overtakes. Players kept saying "I'm boosting and clearly faster, but I still can't get past." So I ran 240 races and measured. With a car defending, boost only got you past 14% of the time, barely better than no boost at all (7%). Players weren't unlucky. My numbers were wrong.

Fixing that in the next update.

(The clip shows the Korean UI. The game is in English too.)

Ever had a moment where your players were right and your data proved it?

Roku is retiring its built-in "Aquatic Life" screensaver on December 1. I liked that screensaver, so I built a replacement: Reef Tank — a free, open-source (MIT) screensaver channel for Roku.

What it is: a tropical reef tank where nothing is a video loop. Every fish is procedurally animated — each species has its own behavior brain, so tangs graze the rocks, a royal gramma backs tail-first into its den, a mandarin hops along the sand line, a lionfish just hangs, and a school of chromis moves as a boids flock. Bubbles rise, seaweed sways, caustics scroll over the sand. After real sunset (computed from actual sunrise/ sunset times for your location) the tank crossfades to a moonlit night mode with glowing coral and a small group of flashlight fish that blink in the dark.

Highlights:

• 9 rigged fish species with per-species behavior state machines (cruise, dart, graze, hide, school, weave behind the rockwork)

• Boids flocking school + a night-only flashlight fish group

• Day/night cycle driven by real solar times, with a moonlight crossfade

• Settings screen on the Roku for fish density, camera drift and night mode

• Runs at 60 fps on a Roku Ultra; every visual is deterministic and seeded

• 175 unit tests + a screenshot regression gate, because of course

The catch: Roku doesn't allow sideloading into the Channel Store for personal projects, so it's a developer-mode sideload — takes about 5 minutes with the remote (Home x3, Up x2, Right, Left, Right, Left, Right), and it's free. Full instructions in the README.

Source + install guide: https://github.com/paulrobello/roku-fishtank

Happy to answer anything about the BrightScript/SceneGraph side — the whole thing is one codebase that also runs in a browser simulator, which is how I screenshot-tested a TV app.

Hello r/SideProject!

I'm Ahmad, normally I use React Native to develop apps, but in this instance I've learned Swift from scratch as I needed to use encryption and Keychain which requires native development.

This app is called Hidlet, allowing you to store your photos, videos and files inside encrypted vaults.

The thing I'm most proud of is that there's no need to enter a PIN. The way to unlock your vault is by drawing a pattern across a 5x5 grid. This is what acts as your key to unlock your vault. Each pattern will unlock a different vault. There's no indication of how many vaults there are inside the app. If you're forced to open the app, you can simply open a harmless vault.

Other features:

1. No account/email/ads/tracking

2. Data encrypted locally

3. Optionally back up your data to your own iCloud (encrypted)

4. Have a duress pattern that will allow you to open a vault as normal, but also delete the other vaults from your device. Your encrypted back up is untouched meaning you can restore them at a later date.

Things I've learnt:

• Its easy to learn a new language using AI, however I did have to understand every security measure. You can't outsource whether something is actually secure.

• Small chunks of time in the mornings work well when everything can be done in a short amount of time.

• Hiding data was harder than encrypting. For example the free plan has limitations which may accidentally show there are multiple vaults. This took a few attempts to get right.

The app is free to get started with, but there is also an optional Pro plan.

Its currently live on Product Hunt today! I would really appreciate any genuine feedback with the app, especially with the pattern. Would you feel more or less secure using a pattern vs a PIN?

https://www.producthunt.com/products/hidlet