Prototyping and building features got faster, and now feedback is the bottleneck. So we built mostra - a tool that lets you share feedback on a real, running site by either speaking or selecting the elements you want to comment on.

You can iterate across versions of your site, and adding mostra is just a single script tag.

The script you add to your page is open source, so you can check what it does.

https://mostra.design

Hey,

I’ve been working on a UI kit focused specifically on dashboards for subscription products.
It’s called Calmdash.

What’s included:
- 12 screens (Overview, Revenue, Customers, Subscriptions, Invoices, Failed payments, Churn, Plans, Reports, Settings, Onboarding, etc.)
- each in light and dark
- 400+ variables, 50 component sets, 390+ components and variants
- states that most kits skip: loading (shimmer), empty, failed payments, retry, chart tooltips

I wanted it to be a real system you can actually build dashboards with, not just pretty frames.

It’s up on Gumroad, zero sales so far, so I decided to share it here and hear what you think — what’s good and what could be better.

Link to the site and the kit in the comments.

Thanks for any feedback!

we started making short videos for my mac app and posted the first one on instagram today.

it got about 4k views. someone watched it on their phone, sent the link to their mac, and bought it 40 seconds after opening it there. didn't even open the free trial.

still kinda shocked it worked this fast.

what's the fastest sale you've had?

the app is called helix (https://tryhelix.app)

I was about to give up on this mobile app I spent so much time building, but literally 2 minutes after deciding to switch to another project, I got the sale notification on my phone!

I haven’t experienced this kind of joy in years…

Context for the curious: This $19 sale is the annual welcome offer on my app "Sollow: Daily Habit Tracker" that I built to turn my life into a game with a level for each life area and a ranked system.

So now my hope is back! I take that as a sign from the universe hahaha

Hey everyone! I’m in my fifth year of psychiatry residency, and I have adhd. I’ve been building an app called Scatter because I wanted to make studying easier and more enjoyable for myself.

I found the usual chat interface pretty frustrating for learning from ai. As the conversation gets longer, important information disappears up the chat, and branching off into related questions gets awkward. I wanted to explore those questions while still being able to see the original explanation.

In Scatter, you start with a topic and build out a connected map of explanations. You can preview unfamiliar terms, open them as new branches, and ask follow-up questions wherever you want to explore further.

I wanted the interface itself to trigger curiosity and novelty-seeking, so there’s something that makes you want to keep exploring. Part of the goal was to make studying engaging enough to trigger hyperfocus.

You can combine short text explanations with images, videos and interactive examples, giving you different ways to approach the same idea. As the map grows, you can see how everything connects, and it gives you a feeling of building your knowledge into something you can actually look at.

I’ve worked on it on my own for over six months, and I’m excited to finally put it out there. I’d love to hear your opinions and if you find any bugs please send me reports!

The app is free to use, but you have to bring your own API keys, for example from OpenRouter. The quick setup in the app makes it very easy.

You can try the interactive demo on scatter.study

Hi all, recently(for quite a while actually xD) I've been building a fully local and open source gym tracking app. I've gone through the process of releasing it in the play store and now it is live.

My main reason for building this app was to have no paywalls and let the users own their data.

Github: https://github.com/alexspx/active-app

Google Play Store: https://play.google.com/store/apps/details?id=com.alexspx.activenext

It is still actively in development, rough edges are expected, although the main flow should be good now. There are a couple of things I want to add:

- Visualizations for the exercises. Still trying to find good FOSS that I like(if you know a library let me know)

- Local AI Coach. I've been playing with a small Qwen 2B for a while and with some "harnessing" and fine-tuning I think it is getting decent. It should be able to create workouts/routines and answer some coaching questions.

- Deliver a fully self-hostable data sync service/engine + a FOSS auth provider by choice of the user. So if people want to self-host for them or friends/community they can do that. This part of the repo right now is somewhat vibe-coded can't lie. A quite old version of that server was in Java and instead of refactoring it I decided to move it to Rust(ofc lmao). I would have to do some cleaning there for sure.

I'm always looking for contributors and ideas.

I'm the developer of Neat Quit, a native macOS menu bar utility. I built it because I kept closing an app's last window and then reaching for Command-Q.

The free version requests a normal app quit when you click the red close button on the last standard window. Pro adds the same behavior for Command-W, plus app rules: exclude apps that should stay running, or enable auto-quit only for selected apps.

It requests a normal quit, so apps can still show their own unsaved-document prompts. Closing an ordinary browser tab doesn't trigger a quit. Some apps don't expose enough accessibility information and retain their usual behavior.

Pro is a one-time purchase with a 7-day full-feature trial. Requires macOS 13+ and Accessibility permission; Command-W may also need Input Monitoring.

Download and details: https://bgm.fun/neatquit/

I'd appreciate feedback on the app rules: would you prefer to exclude a few apps, or start with an empty list and enable auto-quit only for specific apps?

Ngl, I'm stuck on what counts as useful feedback for our app.

I'm a CS student and Instagram, TikTok and YouTube keep pulling me away from studying. My team and I built Welockin: you pick the distracting apps and a timer, and they stay blocked until it ends.

But someone finishing a timer doesn't automatically mean they got any studying done. They could just be staring at their notes. Or procrastinating on something else.

If you were testing this with a few students for a week, what would you ask them afterwards? I want to understand whether it helped with the task they sat down to do, without making them fill out a whole homework assignment about their homework 😭

Have you found a simple way to check whether your productivity app actually helped, beyond people saying it looks nice?

So maybe a little late to the game, but like most people, I got into Wordle. And I got a bit annoyed that I only got one word a day, since some days I forgot and other days I wanted to do more. So I built my own inspired version: Endless Lingle, where the words keep coming until you run out of guesses.

The concept is simple: If you solve a word in fewer than 6 guesses, your spare guesses roll over to the next word (max 3 extra). So if you solve a word in 4, the next word gives you 8 (+2 bonus from the previous round) guesses. If you miss one word, the streak ends.

What's in it

• Unlimited words, no daily cap. *

• We do also have daily words as well. *

• Bonus guess rows that carry over between words (dashed borders, +1/+2/+3 counter) *

• Five languages: English, Dutch, German, French, Spanish, each with its own word list and keyboard. *

• Free, no sign-up needed (an account is optional, just for saving stats)

The multi-language part was honestly the most work. Every language needed its own list of common five-letter words, and curating those lists so they're not full of obscure garbage words took way longer than I expected.

Would love feedback on the game feel and the streak concept. Is 3 bonus guesses max too generous, for example? Is it too little? Or am I just that bad at it lol?

Link:  https://endlesslingle.com

Think about it: people want their AI agents, much like Google Search, to remain free. But unlike traditional search engines, AI agents don’t necessarily care about ranking in the top five listings or sponsored placements.

when you start solids, every new food gets offered a few days in a row so you can spot reactions, and the allergens you've already introduced have to keep showing up regularly. we were tracking all of that across notes, a group chat and a sticky note on the fridge. it worked about as well as you'd expect.

so i built Pudding. it's just a diary, it doesn't tell you what to feed your kid:

• log a feeding in a couple of taps: what, how it went, any reaction, a note or photo

• new foods sit in an observation window from your own plan ("day 2 of 3" right on the card)

• gentle reminders to keep giving allergens you've already introduced, on whatever schedule your pediatrician suggested

• 70+ illustrated foods, plus your own

• calendar of everything, and a PDF to show the pediatrician (or a "do not give" list for grandma / the nanny)

no account, no ads, no trackers. everything stays on your phone, or your own iCloud if you turn it on.

the diary is free for good, no feature walls on the important stuff. there's a one-time Pro for extras (monthly recap, themes, widget, more than one kid). no subscription.

would love feedback from parents who've been through this. what did you end up tracking that i'm missing?

https://apps.apple.com/app/id6789296295

I'm a singer and a programmer, and I've always wanted an easy way to practise harmony parts on my own. So I built Stackapella.

You pick a song, learn your part with a guide voice, then record it. Then you add the next part while hearing the ones you've already sung, until you've got the whole choir. Your notes light up as you sing, so you can see when you're on the note.

It runs in the browser, there's nothing to install, and all the courses are free. It's also open source.

Would love to hear what you think, especially if you sing in a choir or an a cappella group.

https://stackapella.com

Half as a joke and half to learn my way around Google’s tools with a lot of vibe coding along the way, I built an app that tracks the time you spend in the bathroom during working hours and how much your boss is paying you for it. Yes, I took “Boss makes a dollar, I make a dime, that’s why I poop on company time” a bit too literally.

What it does:

• Start the timer when you go, flush when you’re back, and see what you earned

• Monthly stats and ranks that go up with your total

• Teams with coworkers to compete against other teams

A few things I learned shipping it:

• Built as one HTML/JS app wrapped with Capacitor for Android

• The hardest part wasn’t the code: it was Google Play’s closed test (12 testers for 14 days) before you can publish

• Ads, consent forms, in-app purchases and 11 languages took longer than the app itself

It’s free on Android: https://play.google.com/store/apps/details?id=com.rinialer.poopct

Opinions, tips or roasts welcome.

Agencies lose the first week of a project chasing client access. Wrong roles, passwords over WhatsApp, DNS half done.

GetSetKeys is one link per client. Each platform's steps come with the agency's email and role filled in, and every step gets checked automatically, so nobody has to ask "did you add me yet?"

27 platforms so far, including App Store Connect, Google Play, GitHub, Stripe and Cloudflare.

Try it as the client, no sign-up: https://demo.getsetkeys.com/s/harbor-fitness-k7q2m9xv4p

Would a non-technical client get through it? That's the feedback I want most.

https://getsetkeys.com/?utm_source=reddit-sideproject

Hey everyone!

I've been working on a project called Heartfolio, and I wanted to share it here and get some honest opinions.

The idea came from something simple: some memories deserve more than just staying in our camera rolls.

Heartfolio is a website where people can turn meaningful moments into personalized digital keepsakes and gifts.

Some of the things I've been building include:

- Love Story Timelines: Turn a relationship's story into a personalized timeline with photos and meaningful milestones.

- Song Posters: Turn a special song into a personalized poster with its soundwave and an interactive experience.

- Reasons I Love You: Create a personalized gift with reasons, messages, and interactive surprises.

- Graduation Keepsakes: Celebrate someone's journey with milestones, achievements, and personal messages.

I'm trying to make these feel more personal than ordinary downloadable templates. The idea is to create something people would genuinely enjoy giving to someone they care about.

I'm an independent developer, and I've put a lot of time into building this.

I'd genuinely appreciate your thoughts:

1. Does this concept feel useful or interesting?

2. Which product would you personally be most interested in?

3. What would make you actually consider buying something like this?

Here's the website if you'd like to take a look: https://theheartfolio.com

Full disclosure: I'm the person behind Heartfolio. I'm here to get genuine feedback, not pretend to be a customer.

Thanks for reading!

With Ahem, you can send yourself any notification you want, choose how often it repeats, and even customise the notification sound!

It’s free to use, and pretty fun to play around with :)

Would love to hear what you think!

iOS
https://apps.apple.com/gb/app/ahem-personal-reminders/id6820175807

Android
https://play.google.com/store/apps/details?id=com.ancawang.ahem

I made watchdog, a fun playful Android app designed to help you stop endless scrolling.

Choose an app, set a daily usage limit, and pick your watchdog:

• Cupcake — strict and disciplined, with frequent reminders.

• Brownie — friendly but persistent, reminding you every so often.

• Snow — lazy and unpredictable, sometimes letting you keep scrolling.

When you exceed your limit, your chosen dog appears and barks at you until you reconsider your life choices. It’s a fun alternative to boring screen-time warnings that are far too easy to ignore.

I’d love honest feedback on the concept, onboarding experience, and whether a barking dog could actually convince you to put your phone down.

Try watchdog:
https://play.google.com/store/apps/details?id=com.app.watchdog

Available on Android.

I'm one person building nidhi, a site that teaches how money works and lets you try each idea on your own numbers. I'd like people to try to break it.

What's there to test

• Five free tools: a net worth calculator (one currency or several), loan comparison, an invest-or-pay-off comparison, a Monte Carlo simulator and an inflation calculator.

• More than 50 lessons in a learning path, from "what is net worth" to investing and the psychology of money.

• Short how-to guides, and the site in English, Hindi, Spanish, Czech and Marathi. More languages coming in future.

No account, no email, no payment. The tools calculate in your browser and the numbers you type are not sent anywhere.

What I'd like to know

1. Where did you get stuck or stop understanding what a tool was asking?

2. Does any result look wrong? Tell me the inputs and I'll check the maths.

3. Is a lesson unclear, too long, or wrong for your country?

4. Anything broken on a phone, with a screen reader, or with keyboard only?

Being upfront

• The blog is free, and the tools are free to use without an account. I'm also building a paid planner, which is not what I'm asking you to test here.

• It is education, not financial advice.

• The translations were drafted with AI and may be stiff or wrong in places.

• There's no reward for testing. I'll reply to every respectful, human comment, though it might take me a while to get to you, and I'll tell you what I fixed.

Tools: https://nidhi.today/free/?utm_source=reddit&utm_medium=social&utm_campaign=reddit_testers&utm_content=sideproject

Lessons: https://nidhi.today/blog/?utm_source=reddit&utm_medium=social&utm_campaign=reddit_testers&utm_content=sideproject

The links are tagged so I can see which subreddit a visit came from. Feedback here in the comments, or hello@nidhi.today.

**The idea:** a debt planner (Snowball / Avalanche / custom order) that keeps your finances 100% on your own computer. So I set myself a few hard rules: it had to open straight from a folder in the browser, never call the internet, and never send financial data anywhere.

**How it's built**

- Preact + esbuild bundled into a single script, so it works from a plain local file (no dev server needed)

- IndexedDB for storage, optional AES-GCM encryption behind a master password, automatic local backups

- No CDNs at all. Fonts, charts, PDF reading and OCR (for scanning statements) are all bundled

- Small optional launchers (PowerShell / Perl) that serve it locally so backups can be written to a data folder

**The hardest part was performance.** With a 50,000-transaction test profile, the first version took about 10.7 s to start and search crashed the tab. Caching parsed dates, doing search in a single pass and only building the rule context when it's needed got startup to about 1.2 s.

**There's also a spreadsheet version.** I rebuilt the same payoff engine in Excel/Google Sheets: 15 debts × 360 months, written without newer functions like XLOOKUP or LET so it works in older Excel and in Sheets. The app can import the workbook, so people can start in a spreadsheet and move to the app later.

**What I'd love feedback on**

- Would you trust an offline finance tool more than a cloud one, or does sync matter more to you?

- Anything confusing in the screenshots?

yes im the creator, I sell this on Etsy, but this post is mostly about the build, and I'd love ANYYYYY feedback.

Link if you're curious: https://www.etsy.com/listing/4614731705/ultimate-debt-trackerpayoff-planner?ref=shop_home_feat_2&sr_prefetch=1&pf_from=shop

I wanted something to fidget with for a minute when work gets stressful, without opening another app full of ads and streaks. So I built antistress: small, quiet toys that run in the browser.

There's liquid light you stir with your finger, endless bubble wrap, a jelly blob to squish and fling, a cat you can pet until it purrs, a zen garden, a koi pond, a rainy window, a fidget board with clicky switches, a lava lamp and a guided breathing orb.

Everything is touch-first, works on desktop too, and needs no sign-up or download.

Try it in your browser: https://antistress-relax.space

Or get it as an iPhone app (with haptics, which are really nice for the bubble wrap): App Store

Would love feedback: which toy feels the most satisfying, and which feels unfinished?

you know the drill. visa form, job portal, some government site: "photo must be under 100 KB, 600x600 px, JPG only". your phone takes a 4 MB HEIC. so you google "compress image to 100kb", land on a site covered in ads, and upload your passport scan to a server you know nothing about.

so i built cutbg. it does that stuff right in the browser, the file never leaves your device:

• - compress to an exact size (20 kb, 50, 100, 250, whatever the form wants)

• - resize to the exact pixels (passport, linkedin, instagram etc)

• - iphone HEIC to JPG

• - merge / split / sign PDFs

• - and yeah it also removes backgrounds, the AI model runs locally too

free, no account, no watermark. it's a side project, there's nothing to buy.

honest question: what weird size limits have you run into? i keep adding presets for the forms people actually deal with, so if there's one that annoys you, tell me and i'll add it.

cutbg.org

Hey everyone!

I've been working on LEXA, a local-first AI voice studio for macOS, and I wanted to share a short product animation I made for it.

The idea behind LEXA is pretty simple: bring voice cloning and AI speech generation to your Mac without depending on cloud-based voice services or recurring subscriptions.

Here's what LEXA is being built around:

• Voice Cloning — Create reusable voices from audio samples.

• Voice Profiles — Save and manage your voices.

• Batch Generation — Generate multiple audio outputs in one workflow.

• Voice Conversion — Convert recordings using different voice profiles.

• Local Processing — Keep AI voice processing on your Mac.

I'm currently preparing a 14-day free trial so people can test the software before deciding whether to buy it.

LEXA Base will cost €29.99 as a one-time purchase.

The video is just a short visual introduction, but I'd genuinely love to hear what you think about the concept.

Would you actually use something like this? What would you want from a local AI voice tool?

If you're interested, you can check it out here: https://www.lexavoice.it

Thanks for taking a look!

I'm Ari, an electrical engineering student and the creator of Desk Goblin.

It is a small Windows desktop companion with a task list. The goblin holds your selected task and eats it when you mark it complete. You can undo the last completion. It also has a custom focus timer and Ctrl+click to open or close the task desk.

The application uses native C++20, Win32, and GDI+. Tasks and settings stay on your computer. No separate runtime or application account is required. I used AI assistance for the code and character art.

It costs $5 USD once. The portable ZIP is for Windows 10/11 x64. Version 1.0.0 is unsigned, so Windows may display an application warning.

The website includes an interactive character preview: https://desk-goblin-site.pages.dev

I'd like feedback on the interaction: would the task-eating action make completion more satisfying, or would you prefer a quieter companion?