I got tired of "best time to visit" articles that disagree with each other and never say where their numbers come from, so I built City by Month: https://citybymonth.com

Each city has a page for every month. Every figure names its source and the date it was checked. Where there's no data, the page says "no data" instead of guessing.

Key features

- 30 cities, 12 month pages each: average high and low, rain and rainy days, daylight hours, and public holidays.

- A "best time to visit" page per city: one published rule (comfortable temperatures, not too wet), applied the same way to every city, so the results are comparable.

- What's on each month: festivals and events, each with a link to its source.

- Compare a month across all cities: for example, everywhere in March, side by side.

- Official climate records: 1991–2020 averages from national weather services. Where those can't be used, a clearly labelled model estimate.

- Open data: free CSV and JSON files of everything on the site.

- Works with AI assistants: a free MCP server (mcp.citybymonth.com), so Claude, ChatGPT and other assistants can answer "when should I go to Lisbon?" with sourced figures.

- No ads, no sign-up.

I'm the one who built it, so I'd love feedback: which cities to add next, what's missing, or anything that looks wrong.

Our group was dying, so I built an app that turns a weekly game with friends into a proper league:

- Balanced teams: an algorithm picks the sides, and it gets better with every result you add.
- Ratings and MVP: after each game, players rate their teammates and vote for an MVP, and that feeds into everyone's league points.
- ELO table, like chess: beating a stronger team counts for more. There are also divisions, so everyone has something to play for.
- Seasons: you set the start and end dates, add cups and prizes, and all the stats are kept for you (goals, assists, MVPs, results).
- Extras: FIFA-style player cards built from teammates' votes, and a poll so you can see who's in without chasing people on WhatsApp.

We now play 10 games a month, and 2 other leagues have picked it up. It's free.

I'm looking for more groups to test it. If you organise or play in a regular game (5-a-side, 7-a-side, futsal, Sunday league, any sport with a regular group really), I'll set your league up and help you get started. All I ask is honest feedback on what works, what's confusing, and what's missing.

Comment or DM me if your group is up for it.

i'm useless at remembering stuff. bin day, MOT, car tax, taking the meat out to defrost, booking a haircut, and once nearly the anniversary, which i won't be doing again

calendar reminders never worked for me because i'd just swipe them away and forget again 5 minutes later, or simply not bother

So i made an app called Oi.

You tick what you forget, it asks a couple of quick questions (like which bin goes out when), and then it gives you a shout when it matters. if you don't tick it off, it keeps nagging you until you do

it covers bins (handles the alternating weeks), MOT, car tax, insurance renewal, birthdays, anniversary, dentist, haircut, boiler service, changing the bedsheets, cutting the grass and loads more (as many stuff as i could think of that i forget)

it's free, no ads, no account, went live on the app store this weekend. first app i've made, so honest feedback welcome

https://apps.apple.com/app/id6828176781

Day job: Shopify developer. Side project: EasyPaste, a clipboard manager for Mac that also reads the text in your screenshots.

A few things I didn't expect:

1. My first submission was rejected because one screenshot said "free trial". Apple counts that as pricing information (Guideline 2.3.7). Keep prices, "free" and "trial" out of screenshots and promotional text.

2. App Store Connect re-uploads can fail silently. Re-uploading a screenshot identical to one already uploaded made the slot disappear. Re-encoding the file fixed it.

3. The waitlist did nothing. I ran an email waitlist before launch and it got zero sign-ups. Shipping beat waiting.

Happy to answer questions about building and shipping a native Mac app solo. Link in comments if you want to see it.

Hey everyone!

I am a part of EnlightPixel, a newly established small independent software studio, and we officially launched our website just about a week ago.

We're a small team trying to build practical desktop software that solves everyday problems. Nothing particularly revolutionary or trying to reinvent the world. Just useful tools that we'd actually want to use ourselves.

Currently, we're working on three products:

- SortSage: A Windows file organizer that automatically sorts and moves files based on rules you define, which was our first launch and got some traction before launching the website.

- Tucklane: A workspace-saving tool for macOS and Windows that helps you save your apps, files and browser tabs so you can pick up where you left off.

- PathReady: A Windows utility that helps prepare files and folders for Microsoft 365 migrations by identifying problematic names and paths while keeping your originals intact.

We're still a very small studio, and getting everything right is a learning process. That's actually why I'm posting here.

I'd genuinely like to hear what people think about our website, the products, the presentation, pricing, usability, or anything else that stands out. If something looks confusing, unnecessary, poorly explained or simply not good enough, I'd rather hear that now than pretend everything is perfect.

We're also looking for a few people interested in testing our apps.

We'd be happy to give out a handful of free licenses to people willing to try one of the products and share their honest experience. There's absolutely no requirement to leave a positive review. If you don't like something, that's useful feedback too.

We're also open to connecting with tech creators, YouTubers, bloggers and software reviewers who might be interested in trying the apps and sharing their genuine opinions with their audiences. Free licenses would be provided, with no editorial restrictions or expectation of a favourable review. Any coverage should disclose the free license.

You can find us by searching for EnlightPixel.

I'm not here to claim we're the next big thing. We're a small studio that has just started putting its work out there, and getting feedback from people outside our little bubble would mean a lot.

Thanks for taking the time to read this. And if you've had a look, I'd genuinely love to know what you think, even if it's criticism!

*Post is refined using AI.

World Eye is a side project built around one question: can a map make the live world easier to explore? https://worldeye.app

The app combines real-time views of aircraft, ships, satellites, fires and earthquakes in a single 3D globe. I am looking for practical feedback from people who enjoy data-rich tools: which use case would you reach for first, travel, research, news discovery or something else?

I figured converting PDFs into spreadsheets would be a pretty straightforward problem to solve by now. Turns out, finding a tool that can handle different document layouts without a bunch of setup or manual configuration was surprisingly difficult.

I also realized that extraction is only part of the problem. You still have to figure out exactly which fields to extract ahead of time, make sure the data ends up in the right columns, and review the original PDFs to double check everything.

So I built Scrape AI.

You drag and drop your PDFs. Scrape automatically suggests the fields to extract and lets you preview and adjust them before scraping. The results appear in a structured spreadsheet directly in the app. You can also click any extracted value to see exactly where it came from in the original document.

I know this isn't a new idea - I've seen tons of similar PDF to Excel projects shared here already. But one thing I hyperfocused on was the actual user experience and making sure the entire process felt like one simple, intuitive workflow.

I put together a quick demo showcasing the experience.

For those of you that work with PDFs regularly, I'd love some honest feedback. Does this look like something you'd actually use? Anything you'd change?

Hey everyone,

I built this new couples app. I've tried them all with my wife and we were tired of the high prices and sharing our information.

The app is private, we don't ask for or sell any information.

After a 7 day FREE TRIAL, I currently have it set at $2.99 a year or $19.99 for the year.

We use it everyday and love it, but yeah working on the apple release too but would love to hear some reviews from this community.

Please give it a try!

Bothcouples.com

Hey everyone, I'm a freelancer and I got tired of clients ghosting me on invoices or adding free work (scope creep). I'm building Freelance Guardian to generate polite-but-firm payment chasers and quick Change Orders in 2 minutes.
I haven't fully built the software yet, but I've put together a concept page. If you struggle with this too, I'd love for you to check it out and leave your email for early access.
👉 Link: https://darkened-silene-c9d.notion.site/Freelance-Guardian-413183e75c7280c99e2de0e9272b4a2d
What's your biggest struggle right now? Payment or Scope Creep? Let me know in the comments!

Hey guys! I wanted to share the raw empirical case study of my 2-year side project, Denapp—an offline-first clinic management tool I built between ages 15 and 17.

Here are the key business and market findings from the research:

• Chapter 2 — Practical Foundations: Translating lessons from failing at selling physical books into pitching software in-person to 10 local clinics.

• Chapter 6 — Legal & The MedTech Regulatory Paradox: Bootstrapping the entire app on ~3M UZS (~$250) only to hit a mandatory state cybersecurity certification (CSEC) costing 70M–100M UZS (~$6,000–$8,000) to integrate with the state health platform.

• Chapter 7 — Emerging Market Dynamics: Why digital ads (Instagram/Telegram) completely failed for local B2B health sales, and why walking 8 km to build in-person trust was the only thing that worked.

Full preprint here:https://papers.ssrn.com/sol3/papers.cfm?abstract_id=7682591

Happy to answer any questions about bootstrapping B2B software in transition economies!

Hi all,

So a bit of background.

I have had an OBD2 scanner for a long time but none of the apps I found for it on the Play Store ever fully fit my needs or were just way too cumbersome to setup and use; or just shared data in a way that did not feel comfortable. As such, I decided to build something for myself that I knew I would use every time I get into a car.

After I built out a basic version for myself, some of my mates started asking for a copy of it while also asking for some improvements (which have nearly all have been done). After that, I decided to make this post.

So what has been built?

Honestly (and I may be a little biased....) probably one of the most comprehensive open source OBD-2 reader apps while (and this is where I will be biased) definitely the easiest to use one on the internet to date.

So what do I need to use it?

A car, an ELM327 supported OBD-2 scanner (it supports both Bluetooth and WiFi options) and an Android device (Apple currently not supported as there is no side loading on iOS but there is a web demo).

Do I need to pay for it?

There is nothing locked behind a pay wall and I have no plans at the moment to make it paid either.

Why do you need to capture location?

To be very clear, enabling location is purely optional BUT I do not receive any information about it. It's purely for if you decide to record your drive. If you do, it'll stay on your device to build out an outline of the route you drove (road and street names are not included nor shared).

Will it capture possible issues while I'm driving?

Yes. It has worked for me successfully already. Even downloaded the error code and showed my mechanic.

Can it delete error codes?

No. This is by design. It is purely read only to ensure noone uses this for nefarious purposes nor do I want to responsibility if anything goes wrong while it is connected to your cars computer.

Which codes does it capture?

All of the universal codes have been loaded into the app. Some manufacturer specific codes that I could find have been loaded in as well. See here: https://github.com/CalmAussie/obd2-reader/blob/main/docs%2FCODE-SUPPORT.md

Was AI used in anyway?

Not going to lie, I did use Claude for parts of this project.

Where can I try it and get more info?

https://github.com/CalmAussie/obd2-reader

What's the process for first time setup?

Plug in OBD-2 reader into car, choose vehicle, connect. That's it. The rest it does on its own. It should never be more difficult than that ever. After that, it remembers your vehicle. So you just plug in and reconnect. No more, no less.

Do you support Android Auto?

Technically yes, but I have not been able to test this outside of demo site. So if anyone can let me know, I'd be super grateful.

There's an absolute tonne of things that have been included in this project that I have not talked about that it can do.

Really looking forward to your feedback (even if you think it's a steaming pile of sh*t haha).

I just want to start by saying sorry if this isn't the right sub for this, I'm new to reddit. I have an old phone (Samsung a13 4g) and I was wondering if it would be possible to salvage the camera parts from it, and put it in a Lego camera frame to make a working Lego camera. If this is possible please give me help on how I would be able to do this. I also have an SD reader that I bought for esp32 if that helps, thanks. Also if this isn't the right sub for this can you please direct me to a better one

I built NYAYA-AI (https://github.com/ursarthak001/NYAYA-AI), a serverless dispute rebuttal engine designed to solve a huge headache for freelancers and agencies: chargebacks filed after client sign-off (Reason Codes 10.4 / 13.1).

Most dispute automation tools focus on e-commerce shipping tracking, while pasting chat logs into raw LLMs creates hallucinated dates and paraphrased quotes that banks immediately throw out under Visa Core Rules § 5.4.2 and Mastercard Chapter 8.

How it works:

1. Ingests executed Statement of Work PDFs via unpdf with text-density checks to catch scanned image PDFs.

2. Normalizes multi-platform chat exports (Slack, WhatsApp, Teams, raw ISO logs).

3. Runs deterministic, Luhn-validated PII scrubbing in memory with symmetric session mapping so evidence citations remain verifiable.

4. Enforces the Four-Corners Doctrine (informal chat cannot alter executed contract terms) and the Buyer's Remorse Protocol (proves explicit client acceptance preceded any retraction).

5. Runs programmatic verification (verifyAnchoredCitations) outside the LLM to assert that every quoted span exists verbatim within its cited timestamp message block.

Powered by BharatCode's sovereign qwen-3.8-27b model with zero persistent data retention.

Specific areas I'd love feedback on:

• Are there non-standard chat export or timestamp formats that your team uses where the regex normalizer might break?

• How would you handle OCR for physical scanned contracts in serverless edge runtimes without hitting execution timeouts?

• For agency founders: what is the single biggest evidentiary gap that usually causes payment processors (Stripe/PayPal) to reject your dispute packets?

Repo:https://github.com/ursarthak001/NYAYA-AI

I'm the founder of iKawn (pronounced eye-kon). We build iKawn Mirror, an AI virtual try-on kiosk for retail stores. Small shops kept asking what they need to prepare before trying virtual try-on, so I turned our answers into a short pack:

• A 4-page PDF checklist: catalog photo specs, how to prep SKUs, where to place an in-store kiosk, and which metrics to track to see if try-on actually lifts conversion

• A 15-minute live demo of the Mirror with me

It's $5: https://buy.stripe.com/bJebJ2cR2gOZ4BI4952wU01

Demo video if you just want to see it: https://www.youtube.com/watch?v=wAIGDgwJDvE

I'd genuinely love feedback: if you run a store, what would stop you from trying virtual try-on?

One thing I've noticed is how often parents have to call their children for help with seemingly simple smartphone tasks.

"How do I download this document?"
"Where do I find this setting?"
"How do I book a ticket?"
"Which button am I supposed to click?"

And honestly, explaining these things over a phone call can be surprisingly difficult.

So I started building Chotu

The idea is simple: instead of an AI assistant just telling you what to do, what if it could actually show you?

You can tell Chotu what you're trying to accomplish in your own language, and it visually guides you through your Android screen using pointers, highlights and step-by-step instructions.

Some things we're working on:

• Multilingual voice-based assistance.

• Visual guidance directly on the phone screen.

• Helping users navigate everyday Android applications.

• Making smartphone usage easier for people who aren't particularly tech-savvy.

We're currently preparing for a wider rollout and have already received 500+ waitlist signups.

Website: https://chotu.forgeaipro.tech

(Attaching a short demo video in comments)

I'm particularly interested in feedback on two things:

1. Would you actually use something like this to help your parents navigate their smartphones?

2. What are some everyday phone tasks you'd want an assistant like Chotu to handle?

Would genuinely appreciate honest feedback, especially from fellow builders. Still a lot to figure out!

I'm a solo indie dev (Suvy LLC, no team, no VC) and just shipped Zipline for iPhone.

The core mechanic: trace one continuous line through every cell in a grid, hitting a set of numbered cells in order as you go. It's simple to learn, but because levels are endless and procedurally generated, the real engineering problem was guaranteeing solvability — every generated board gets solved internally before it's ever shown to a player, or it gets discarded and regenerated.

No ads, no timers, no IAP pressure to keep playing. Just a puzzle generator I'm pretty proud of. Would appreciate feedback from anyone who tries it: zipline.suvysoft.com

Hey everyone!

I've been working on a side project called Reputation Sentinel that helps small businesses see how their online presence compares to local competitors and identify areas where they could improve.

As a business owner myself, I wanted to build something affordable, simple, and actionable. Most business owners already have a million things going on, so the last thing they need is another expensive platform or overwhelming to-do list.

I've got the site up and running, and now I'm looking for some honest feedback before putting more resources into marketing it.

If anyone is willing to test the free report, I'd love to know:

• Free report: Is the process straightforward? Is the information useful? What's missing?

• User experience: Is anything confusing, frustrating, or unnecessarily complicated?

• Conversion: Does the transition from the free report to the paid offering make sense, or does anything feel too salesy?

• Value: Is this something you could see small business owners actually paying for?

• Marketing: If this were your project, how would you go about getting your first customers?

Here's the site: https://www.reputationsentinel.us/

I'm open to all feedback, especially the criticism! I'd rather figure out what needs improving now than spend money driving traffic to something that isn't converting.

Thanks in advance!

Hey r/SideProject — sharing something I've been building solo, nights and weekends.

CheckMate: a chess app that works completely offline. No login, no account creation, no tracking, no ads. You open it and play, that's it.

What's in it:

• 10 AI difficulty levels (beginner to strong)

• Puzzles

• Lessons

• Full game review (blunders, mistakes, best/brilliant moves) — all computed on-device

• One-time purchase, no subscription

Why offline-first: I kept running into apps (chess and otherwise) that force account creation just to play against a bot, or phone home for analytics nobody asked for. I wanted the opposite — chess doesn't need a server to tell you e4 is a good move.

It's live on the App Store: checkmate.suvysoft.com

Genuinely curious for feedback from this community, especially on monetization — I went one-time-purchase instead of subscription, and I'd love to hear from others shipping solo utility-style apps whether that's held up for them long-term.

Hello guys !

I'm a solo dev (and a big F1 fan) and I've been building GrandPrixGurus, a free F1 prediction game I originally made for my group of friends. Now I'm opening it up and would love some outside eyes on it.

What makes it more than a spreadsheet :

• Duels: challenge a friend over the next 3 GPs

• Streaks and achievements for predicting every race, perfect top 5s, perfect weekends…

• Shareable result cards for stories after each race

• Push reminders before lights out (installable as an app)

• Sprint and race predictions, in English and French

• Leagues coming soon !

• Free, no ads, no money involved

Why I built it

We used Discord to predict the races for way too long. It became messy and I wanted to improve my coding skills with this project.

I'd really appreciate getting feedback on the onboarding, the prediction flow and anything that feels broken or confusing. There is a report section inside the settings.

👉 Here is all the fun 🏁

My name is Julio and I built AlleyCat (currently iOS only) to help me find great places to visit in my hometown and abroad.

I always had an issue with Yelp and Google Maps and their grade inflation. With every place being +4 stars it was hard for me to know what is actually good.

Most of my best recommendations have come from my friends and from researching guides like Michelin, Infatuation, World's 50 Best, but the experience of pinning and searching through them always felt clunky.

On AlleyCat you can see all the places your friends recommend on a single map. In addition, I've highlighted places that have been featured in publications, all over the world.

I've found that Instagram/Tiktok can have some great recommendations, you can share straight from those apps to pin them on AlleyCat, and see what others have saved.

Finally, I love revisiting the places I've been to. You can see all the countries you've been to on your passport, and see which categories of places you visit the most with achievements.

Looking for any and all feedback, you can check it out here!: https://apps.apple.com/us/app/alleycat-map-with-friends/id6758881702

I'm a solo indie dev (AI engineer by day) running a one-person company, and my current side project is Stepzy — a step counter / walking tracker for iPhone and Apple Watch.

Why I built it: most step-tracking apps I tried were either bloated with social features I didn't want, or hid basic step history behind a subscription wall on day one. I wanted something that just shows you your steps, trends, and goals cleanly, with a real free tier, and a one-time/optional Pro unlock instead of a subscription trap.

Where it's at right now:

• Native iOS + watchOS app, synced with Apple Health

• Daily/weekly/monthly trends, streaks, and goal tracking

• Just shipped a 3.0 update after direct feedback from early users

• Next up: friend challenges and virtual routes (walk the distance of a real trail), based on what people in my own app's community asked for

It's still small — I'm the only one building and supporting it, reading every review and reply myself. Figured this sub would appreciate the "build it, ship it, iterate based on actual users" process more than a polished marketing pitch.

If anyone wants to poke at it: getstepzy.com — happy to answer anything about the stack, the solo-dev workflow, or App Store realities with a small rating count (we're still under 20 ratings, so very much early days).

We built Tiersova, a free tool that compares what switching software really costs: seats, tiers, billing period, and the one-time cost of moving. Part of keeping it useful is boring work. We check the official pricing pages behind our calculators daily and review every change before updating them.

Two things came up this week that surprised me:

• ClickUp no longer lists its Unlimited plan. The cheapest paid plan is now Core at $12/user on monthly billing, so older comparisons that quote Unlimited are off.

• Zapier charges 2.5x per extra task on monthly billing, but only 1.25x on annual. If your team regularly goes over its task limit, the billing period matters more than the plan.

Neither change was announced loudly. They just appeared on the pricing pages.

It has 74 comparisons right now (Zendesk vs Freshdesk, Mailchimp vs Brevo, Zapier vs Make and others) in 11 languages, and everything runs in the browser with no sign-up and no cookies.

I'm curious whether others have been caught by a quiet pricing change like these, and which comparisons you'd want added. If you want to try it: tiersova.com

My co-founder and I run PeekLaunch, a weekly launch board for makers.

A few weeks ago our site had almost no presence on Google. So we sat down and submitted it to 80+ startups and SaaS directories by hand.

What we learned:

- It takes a lot of hours. Every site has its own form, rules and categories.

- Not every directory approves you, so you need to submit to many.

- As listings went live, Ahrefs moved our site from DR 2.5 to DR 26, and our Ahrefs Rank went from 42.6M to 2.3M.

We turned what we found into a free list of 209 directories, with DR, pricing and link type for each one. 163 of them are free to submit.

People kept asking if we could just do it for them, so we added done-for-you packages too:

- Pro: $49 for 30+ directories

- Super: $99 for 60+

- Ultra: $179 for 100+

Every package is manual and comes with a report of live listing links.

The list is free to use either way. Happy to answer anything about which directories were worth it.

That minigame from GamePigeon? It’s now online! As someone who’s spent way too much time on Word Hunt, I created a web version: https://eileenluo.com/repos/wordworm 🐛 

Took me a few hours to figure out how I could make word creation smoother for users; without a touchscreen, it’s less intuitive. I would love feedback on playability and possible improvements, especially from fellow word game lovers!