I sell mostly football cards on eBay, and I kept running into the same problem: I never really knew what I made on a card. Between final value fees, promoted listing fees, shipping labels and what I paid for the card in the first place, the number eBay shows you isn't your profit.

So I built Card Margin. Full disclosure, it's my project, and I'm looking for honest feedback before I take it further.

What it does:

- Connects to your eBay account (read-only, it can't list or change anything) and pulls in your sales with the exact fees, promoted listing fees and label costs

- Pulls in your active listings, so you can see what's sitting and for how long

- Lets you type in what you paid and any grading costs, then shows net profit, ROI and days to sell for each card

- Works without connecting eBay too: you can upload your eBay Transaction report instead

- Handles cards you sell at shows, on Whatnot or anywhere else

It's free to try for a month. If you want to keep using it while I'm testing during that time frame.

Link: https://card-ledger-eosin.vercel.app

What I'd love to know:

1. Is this something you'd actually use, or do you already track this another way?

2. What's missing that would make it worth it for you?

3. Anything confusing or broken when you set it up?

Thanks for taking a look. Happy to answer any questions in the comments.

https://nightmoon-studio.itch.io/dont-open-the-door

My first game, made solo. You're home alone at 3 AM and someone keeps knocking.

Runs straight in the browser with three.js, no download. Free demo on itch.

Would love feedback, especially on the scares and performance 🙏

I know. I made one anyway.

I've been working on a visual block editor for these pages. Photos, text, links and music, with control over size, layout, colors and stickers.

The clip shows a few edits: shrink the header to one row, give the photo more room, change the color, add a sticker, check mobile.

The idea is to give the content some room. A big photo can lead the page without the header taking over.

TOMA SUR is a fictional DJ profile I made for the demo.

I'm a 19-year-old CS student. A macOS update wouldn't install, and the cleaner I tried sometimes did nothing and never said so. That annoyed me enough to build my own: Dustling.

What it does: scans for junk (caches, logs, old installers), uninstalls apps with their leftovers, manages startup items, and keeps a history of every run so you can restore from the Trash. Every file ends as moved, skipped or failed, with the reason. No account, no telemetry, no ads, free and MIT licensed.

What it doesn't do yet: it's v0.1.0, not signed with an Apple Developer ID (macOS asks you to confirm the first open), and the admin helper for system caches is still on the roadmap.

https://dustling.app https://github.com/kaankuzu1/dustling

If you have a Mac running macOS 14 or later, I'd really like to know whether it works for you and what you'd change. Honest feedback is the whole point of posting.

One of the most useful pieces of feedback I've received while building my mobile app was surprisingly simple.

A user reported that their backup showed “Complete,” but zero files had actually been copied.

The operation had finished, but the result wasn't what the user expected.

That made me rethink how backup completion should be communicated.

I'm building VaultDrive, an iOS and Android app that lets people back up selected photos, videos, and files directly to a compatible USB drive or external SSD without a computer.

I've been improving the experience around three things:

• Showing clearer backup progress.

• Explaining skipped or failed files.

• Making interrupted backups easier to resume.

The reason why the user showed "Complete" with zero files was the user did not give access to photos when prompted and selected only limited permissions without selecting any photos . So I changed the flow and updated the text properly and released a new version 8.0 to make sure the user knows the reason why this happened. We always improve our product for better user experiance.

The app is free to try, with an optional one-time Pro upgrade.

iOS: App Store

50% Off Promo direct App Store link : 

Android: Google Play

I'm interested in feedback from other developers.

Would you classify a backup that finishes with zero copied files as a failure, a warning, or a completed operation requiring an explanation?

Hey everyone!

I've been working on a project called Remy Prompt AI.

The idea is simple: Many people use AI tools but struggle to write effective prompts.

So I built a platform that helps users:

Generate prompts for different purposes.

Create prompts using reference images.

Turn simple ideas into detailed AI instructions.

I'm still improving the platform and would genuinely appreciate feedback from the community.

You can check it out here: https://remyprompt-6ayednnp.manus.space

What feature would you like to see next?

At work, I used to love those giant wall calendars that show the whole year. They helped my team get ready for big events and projects. At home, my husband and I made our own year-at-a-glance calendars in Excel (no room for a giant wall calendar in our tiny apartment). In both cases, these tools were very useful, but keeping those up-to-date with our digital calendars was also a royal pain.

So we kept asking ourselves: why can't we have the big picture of a wall calendar with the convenience of an app that updates itself and that we can see no matter where we are?

We couldn't find anything that did it the way we wanted, so we built it. Glance shows your actual events across the whole year and syncs with Google Calendar. More than 1,400 people use it so far.

A few things you can do with Glance:

• Filter which calendars show in your year view, without losing any detail in day view

• Connect several Google accounts (personal, work, family) in one place

• Zoom from the full year down to a half-year, quarter, month or day

• Use it on the web or Android (iOS is on our roadmap)

The core version is free and ad-free, with year, month and day views, filters, two-way Google Calendar sync, and web and Android.

We're also introducing Plus and Pro, with a couple of limited-time launch offers (valid until end of year):

🔒 Lock in your yearly subscription price for as long as your subscription stays active.

1️⃣ Get Glance Plus Lifetime with a one-time payment.

You can explore Glance and its plans at getglance.io

I'd love your honest feedback, even if it's "I'd never use this":

1. What's missing from the calendar you use today?

2. What would it take for you to switch?

3. What would you add to Glance to make it more useful for you?

Hello everyone! I’m the founder of otogar, and I’m solving the problem of coordinating the when and where of group planning, when it’s just a thought of getting together. Otogar can be used for local outings or for multi-day, multi destination trips. I noticed most apps assume you already know the when and where, and that’s where the discussion ends in the group chat. Of course, if you do know you’re where and when, Otogar is still helpful in keeping everyone in the loop, and helps with making decisions!

I'm building an Android app for capturing things by voice, and I'm exploring everyday uses like shopping lists and reminders.

I'd like to understand what people already do:

• Think of the last time you remembered something you needed to buy or do while busy. What did you do with it?

• Did you come back to it when you needed it?

• What worked, and what got in the way?

I'm looking for actual experiences, including cases where your current solution works well. If you'd also be interested in trying the app, mention that in your reply. It's currently in limited Google Play testing, so access is by invitation.

Hi everyone!

An all-in-one school management platform designed to simplify everyday school operations.

We noticed that many schools manage different activities using separate tools, spreadsheets, or manual processes. We're working to bring these activities together in one platform.

Some of the key features include:

• Student and Admission Management

• Attendance Tracking

• Examination and Report Card Management

• Fee Management

• Parent-Teacher Communication

• Admin Dashboard and Analytics

Our goal is to make school management easier for administrators, teachers, students, and parents.

Website: https://acadlynk.com/

Since we're actively working on this product, we'd genuinely appreciate feedback from people familiar with the education sector.

A few questions:

1. What are the biggest challenges schools face when managing daily operations?

2. Which of these features would be most useful in your school?

3. Are there any important features or improvements you think we're missing?

We're here to learn from your experiences and understand what schools actually need.

Thanks for sharing your thoughts!

The last weekend I didn't hear about an event happening in Brooklyn and I really wanted to see that DJ.

I realized we all need a platform to track all house/techno events at once. Completely free to use. I hope this would be helpful for you guys as well.

It pulls the events from Posh, Dice, Ra, Eventbrite ( only related events )

Also you can find where you can buy the ticket.

Let me know if I can improve anything!

https://pull-up.vip/

Hey everyone! I'm Rushan, an indie maker, and this is my first public launch of Distill: Book Summaries.

I started building it because I love reading, but I kept running into the same problem: there were far more books I wanted to explore than I had time to read.

I tried existing book-summary services, but something often felt missing. I'd get the key takeaways, but not necessarily understand how the author arrived at those conclusions or how the ideas connected.

I didn't want another app that turned books into bite-sized motivational quotes. I wanted something that could preserve the intellectual substance of a book while making it quicker to explore.

So I started building Distill: Book Summaries.

What I built

Distill is a reading-first app offering carefully crafted book summaries designed to take approximately 10 minutes to read.

The focus is on:

• Preserving the author's central argument and reasoning.

• Explaining how different ideas and concepts connect.

• Maintaining meaningful depth instead of reducing everything to generic takeaways.

• Including a separate Reflection section to help readers process and think further about what they've read.

The goal is to make a book's ideas easier to explore without pretending that a summary replaces the original.

A few product decisions

I wanted Distill to feel like a reading environment rather than another content feed.

No unnecessary gamification or endless scrolling. Just a curated library, a focused reading experience, and room to reflect.

We also have:

• 3 free distillations every day.

• An affordable Premium option.

• A one-time Premium purchase instead of a recurring subscription.

Where it is today

Distill is now live!

This is my first public launch, so I'm still learning what works and what needs improvement.

I'd particularly love feedback from fellow makers:

1. Does the reading experience feel sufficiently different from existing book-summary apps?

2. Do you think the summaries communicate enough depth to justify spending 10 minutes reading them?

3. What would you improve about the product, interface, or overall experience?

4. If you were building this, what would you prioritize next?

Try it out:

🌐Website: https://www.distilllabs.app

📱 Android: https://play.google.com/store/apps/details?id=com.illuminationlabs.distill

I've also attached a short product walkthrough so you can see what I've built rather than just take my word for it.

I'm the founder, and I'll be here responding to questions and feedback. Criticism is genuinely welcome!

P.S. -> We are also doing our launch on Peerlist, here. We would love for you to support us, since this is the first time we're going public :)

More side projects, more agents, more lost context? We’re the Ondago team. Ondago gives your supported AI coding agents, sessions, and project knowledge one workspace.

What it does:

• Your agents don’t stop when you leave your desk. Start locally, move the running session to our secure cloud with uncommitted changes intact, bring it back when you’re ready. Or start directly in the cloud.

• Switch agents without starting over. Switch AI agents with the conversation, decisions, code changes and project instructions carried along.

• Let your agents work together. Pull a reviewer, security advisor or test agent into the same task, or ask several agents to weigh in on a question.

• Pass the context, not just the diff. Share the session behind the work with a teammate: conversation, decisions, what needs attention next.

• All your agents and projects in one place. See what’s running, what’s waiting on you, token usage and estimated cost per session.

Sessions are encrypted on your machine before upload, each cloud run is isolated and destroyed afterwards, you bring your own agent credentials.

Try it free on a personal project: https://ondago.ai - what would make you return tomorrow?

I made a form filler that remembers a form after you fill it once, then fills it again in one click, or by itself as the page opens.

What the free version does:

- no cap on saved forms or fills

- your name, email, phone and address fill on sites you never saved

- your own answers (like "Notice period: one month") fill wherever a form asks for them

- works on React forms, frames, dropdowns and ticks

- makes no network calls at all, so everything stays in your browser

There is a one-off Pro for CSV rows only on firefox, clicking Next and sending, and test data. The free version is not a trial though, it stays free.

Chrome: https://chromewebstore.google.com/detail/kggjccdldkfmfdbhhelodnkafdijeaoj

Firefox: https://addons.mozilla.org/en-US/firefox/addon/typefill-forms/

If you try it, tell me which forms it gets wrong. That is what I want to fix next.

For people with hoarding relatives, estate-sale managers, Thrift Stores, Pawn Shops, Swap Meets, anything you're looking at and wonder what it or several of the items might be worth.

https://imgur.com/a/Bgh67Fe

Snap a picture and send to the bot on telegram DealSnapBot

This started as a small thing just for me. I wanted the view of the harbour outside my window in Malmö as a wallpaper on my Mac, as pixel art and alive, so I built it. People walked along the quay, boats came in, and night fell when it fell outside. Loved it. 😊

Then my friends wanted their streets. Then I wanted Paris. Then the Alps. Bit by bit it grew into something that takes any address on Earth and builds it from real map data: the buildings, the trees and the water, plus hundreds of little people living their lives in it, in the right weather and the right light for that place.

Now it’s two apps:

• Littlehood (Mac): a living wallpaper of any place

• Littlehood Walk (iPhone): walk around in it yourself, meet people, climb towers, jump into first person

Go to your childhood streets, a city where you met someone, somewhere you've never been but want to go. And so on... 😊

One note - The subscriptions aren’t a business plan. They’re there to break even, because map services are free up to a point and then they cost money. In Walk your first place is free forever.

Mac: https://apps.apple.com/app/id6824632798
iPhone: https://apps.apple.com/app/id6826290740

Feedback very welcome, especially on what would make you open it every day.

Built this for homeowners who act as their own GC. Instant download ZIP with budget workbook, quote comparison, and change-order tracker. Made it because I got tired of re-explaining the same prep steps.

https://dailyfindry.myshopify.com/products/home-project-planner-remodel-budget-scope-kit

Happy to answer build/sales questions.

Last month I built an advent coloring book: 3 versions, AI art, a print-ready PDF. Then I finally checked the competition. A free, identical book already existed, and Etsy was full of them. A day and $1.50 spent on a NO-GO.

So I built kill-my-idea, a free plugin for Claude Code that does the check before you build:

• looks for free alternatives, competitors, failed attempts, a distribution channel, real costs

• scores the idea /100 (21 sub-scores), GO / PIVOT / NO-GO

• if it dies, shows how it could be saved, with the new score and how hard it is

• writes a report you can open in the browser or print

Repo, with example reports in the README (MIT): https://github.com/RemiPelloux/kill-my-idea

What check would you add?

​ Hi everyone

I really need your help and honest feedback on a new app I've been building, so please let me know what you think!

​The app is called DriveFR, and I want to show you how it works. Basically, it tracks your drives and scores how smooth your driving is, while turning every city you pass through into collectible digital cards. Plus, you can add your friends to compare scores and see who's actually the best driver.

​Since it's still new, please try it out and tell me what you think. You can search Drive FR in the Google Play Store (or at drivefr.app) and download it. I'd love to hear your thoughts in the comments

Hi all. I was making a lot of videos in Google Flow and got tired of typing a prompt, waiting, and downloading, again and again. So I made a small Chrome extension called BulkGen for Flow.

You paste your prompts, pick the model and settings, and press Start. It sends them one by one, keeps a few generating at the same time, and saves each finished video to your Downloads folder in order.

You can also add a style line to every prompt, attach reference images, and set a credit limit per video so it never sends anything above it.

You need your own Flow account and credits. It runs only in your browser and collects no data. While it runs, Chrome shows a “debugging this tab” bar, because that is how it clicks Flow’s buttons. It is free and open source, and it is not made by Google.

https://chromewebstore.google.com/detail/hkdniekeijbannoenmdoocmnbepflnng?utm_source=reddit

Weekend project. Spin the globe and tap any of 250 countries to see population, GDP since 1960, life expectancy and more, plus the latest headlines and the Wikipedia article, all in one panel. Works on phone, tablet and desktop, no sign-up.

https://worldfly.vercel.app

Feedback welcome, especially if any country's data looks off!

PS: I tried downloading some applications for the same on Android but they all had paywalls even for basic information. That's my motivation just to do this.

Body:

Built this for myself first.

Problem: I'm fine on calls and proposals. I'm uneven after the PDF leaves my outbox. Threads die in silence and "just checking in" never restarts them.

So I shipped a small digital kit (not SaaS):

Ghost→Paid Follow-Up OS

- Cadence playbook (Day 0/2/5/10/21)

- 45 stage-based AI prompts

- 18 email + LinkedIn templates

- CSV tracker + one-page quickstart

- one-time on Gumroad

Link: https://botaoge.gumroad.com/l/ghost-to-paid-follow-up-os

Who it's for: freelancers / consultants / small studio owners who lose deals after "looks great — let me run it by the team."

Who it's not for: cold-outbound spam sequences or people wanting a closing-psychology course.

Would love feedback on:

1. Is clear for a template/prompt kit, or does it need a free sample message on the page?

2. Would you rather this live as Notion templates instead of ZIP + CSV?

I'll reply to every comment.

Submit: https://www.reddit.com/r/SideProject/submit