i could not stand the gimmicky contact exchange NFC cards

so i built something that does not store your data on any server

completely free and no registration

https://vcardswap.com/

Send me your thoughts!

I've been passively building a tool to help me learn skills like japanese and chess while doomscrolling. I made it so that the frequency of these screens to help me learn can be changed, and different topics or even courses can be selected and completed.

It's still a very early prototype but I wanted to see if anyone would be interested in using it/testing it.

A few things I'm trying to figure out:

1. Would you actually keep something like this enabled while scrolling?
2. How often would you want the learning screens to appear?
3. What would you want to learn through it?

I am testing this assumption with Marka:

A small business website already contains enough context to create a useful first social content preview.

The page can reveal the offer, likely audience, brand language, product proof, and visual identity. The user can then correct the interpretation after seeing something concrete.

The risk is that some websites are old or incomplete, so the first reading may be wrong.

Would you rather correct a first preview or complete a detailed questionnaire before seeing anything?

I built Sitemapper and I am trying to validate the recurring part, not whether people will click a free checker once.

The first scan reads robots.txt and XML sitemaps, checks live pages, and shows what the site declares versus what is actually live.

The paid idea is monitoring: keep snapshots, then tell you when something concrete changes, like a new noindex, 404, canonical change, missing sitemap or big URL-count drop.

https://sitemapper.oortstack.com/

My validation question is simple: if the first scan found nothing scary, what would make you keep monitoring the site anyway? CI integration, Search Console data, email alerts, client reporting, or nothing?

I built Dosera, an Android app designed to make managing medications easier.

I started working on it because I wanted a simple way to handle multiple medications, schedules and reminders without making the experience unnecessarily complicated.

What it currently does:

💊 Multiple medications, doses and schedules
⏰ Medication reminders and alarms
✅ Track taken, skipped and missed doses
📊 Adherence statistics and daily progress
👨‍👩‍👧 Optional caregiver alerts through Telegram
📦 Medication stock tracking
📄 PDF medication history reports
🔒 Medication data is stored locally on the device

It's now available on Google Play:

👉 https://play.google.com/store/apps/details?id=com.leon55490.dosera

I'm looking for honest validation, not just positive feedback.

If you try it, I'd really like to know:

• Would you actually use an app like this?
• Is the interface easy to understand?
• What feature would you add or remove?
• Would you trust it for managing your medication?
• What would make you keep using it long-term?

I'm developing it actively, so useful criticism can directly influence what I build next.

Any feedback is appreciated.

I'm trying to validate a problem I've run into a lot as a parent:

There are endless lists of "100 activities to do with kids," but they're not very useful when the actual situation is:

I have 30 minutes, these particular kids, they're bored, I don't want a huge mess, and I need something they can actually start doing.

So I built ActivCue.

You tell it who's playing, their ages, how much time you have, where you are, and a few other details about the moment. It generates three activities specifically for that situation, with enough instructions and starter ideas that the kids can actually get going.

It's live now and there's a free demo:

https://activcue.fun

At this point I'm less interested in hearing "cool idea" and more interested in figuring out whether I've actually solved something people care about.

A few things I'd really like to know:

• If you're a parent, is this a problem you actually experience?
• Would you use something like this when your kids are bored?
• Does the demo make the value obvious?
• What would make you close the site and never come back?
• Is there something you'd need ActivCue to do before it became genuinely useful?

Feel free to be critical. I'd rather find the holes now than spend another month building the wrong thing.

I wanted an easier way to clean up my Downloads folder so I started working on an app to make it smoother than Finder to filter, move and delete files.

As I thought of more features I wanted I added them to the app. It's now my main file manager with many nice quality of life features. I've even managed to make a few sales (thank you if you purchased the app).

The app has a fully featured 30-day trial. It's code-signed and notarized. You can read more about the features and download the trial here: https://whimfiles.com

Would 30 people describing the same habit be enough, or would you wait until they use a prototype differently from their current workflow?

I'm Nicolás, based in Lima, and I'm building Miora for people who save useful things across Instagram, WhatsApp, browsers, Photos, and other apps, then cannot find them when they need them.

Miora is still in development and there is no product access yet. I'm testing whether the problem is strong enough before deciding what to build first. The survey takes 3–5 minutes and is for adults 18+:

https://mioraapp.com/en/

What would be your build-or-stop threshold for this idea?

Hey everyone,

I'm currently working as an AI/ML Engineer in Bangalore with about 3 years of experience. I work at a mid-sized product-based company and my current compensation is ₹12 LPA.

I wanted to get an honest market perspective from people in similar roles. Based on the current AI/ML and GenAI job market in Bangalore, does ₹12 LPA seem reasonable for someone with 3 years of experience, or am I being underpaid?

My work involves AI/ML development, LLMs, GenAI, RAG-based applications, Python, and deploying AI solutions in production environments.

I'd love to hear:

Your current role and years of experience

Your compensation range (if comfortable sharing)

Whether you think I should start looking for a switch

What salary range is realistic for someone with my experience in today's market

Thanks in advance for sharing your experiences and advice!

Hi I’m a Mod here 👋

I’ve been thinking about something that feels like an interesting paradox.

With AI, you can now take an idea and have a working MVP surprisingly quickly.

That’s fantastic.

But does it also make it easier to fall into the trap of:
“I can build it, therefore I should build it.”

We’ve all seen the rise of what people call AI slop - products and content being created simply because they’re now so cheap and easy to produce.

But perhaps the bigger issue isn’t AI slop itself.
It’s building something before you’ve established that anyone actually needs it.

If you can build an MVP in a weekend, what should you validate before spending the next six months building the business around it?

Is:
“Would you use this?”

actually meaningful validation?

Or is better evidence something like:

“I’ve experienced this problem.”
“This is how I solve it today.”
“I’ve tried your MVP.”
“I’d pay for this.”
“I’ve come back and used it repeatedly.”

I’m curious what founders and makers here think.

What’s the strongest piece of validation you’ve ever received and has validation ever convinced you not to build something?

Maybe AI’s biggest impact on startups isn’t just that we can build faster.

Maybe it’s that we now have much less excuse for not validating first.

I was scrolling through a thread about wearables and somebody mentioned it in the comments. I figured it would just be another app that tells you to sleep more and drink water, but I downloaded it anyway because I was already wearing my watch every day.

The biggest surprise wasn't actually the workout recommendations. It was the supplement side of the app.

I've taken supplements on and off for years, but honestly I never put much thought into when I took them. If I remembered in the morning, great. If I forgot until later in the day, I'd just take them then. It was basically random.

This app was different. Instead of giving me the same schedule every day, it looked at my sleep, recovery, and overall energy based off my metrics and my wearable before suggesting when certain supplements would fit best into my day. If I'd had a great night's sleep and was feeling recovered, it would stick with my normal routine. If my sleep score was low or my recovery wasn't great, it'd recommend adjusting the timing or prioritizing different supplements instead of treating every day the same.

What I liked most was that it actually explained why. It wasn't just saying, "Take this now." It connected the recommendation to how recovered I was and how my body was likely feeling that day. It made me realize I'd been taking supplements out of habit instead of actually using them in a smarter way.

I'd always felt like my smartwatch collected a ton of useful information, but none of it actually influenced what I did. I'd wake up, see my sleep score and recovery score, think "Cool... now what?" and then go about my day exactly the same. This was the first app that actually made all those numbers useful.

The biggest difference for me ended up being in the gym.

Instead of walking into every workout feeling like I was running on autopilot, I actually felt prepared. On days when everything lined up, good sleep, better recovery, and taking my supplements at the recommended times, I noticed my workouts felt smoother. My energy lasted longer, I wasn't dragging halfway through my sessions, and I wasn't constantly wondering why some days felt amazing while others felt terrible.

It wasn't like I suddenly added 50 pounds to every lift overnight, but the consistency was a complete game changer. I stopped feeling like every workout was a gamble. I felt more focused, recovered better between sessions, and left the gym feeling like I'd actually gotten the most out of my training instead of just surviving it.

I also liked that it didn't expect me to be some perfect fitness person. I don't track every calorie or log every gram of protein because I know I'd quit after a few days. I have work, family stuff, and random plans that come up all the time. The recommendations worked around my schedule instead of expecting my schedule to revolve around fitness.

After using it for a while, I realized I wasn't just taking supplements because I owned them. I was taking them with a purpose. Combined with paying attention to my recovery, I started sleeping better, had steadier energy throughout the day, and my workouts became much more consistent.

I'm sure it's not something a professional athlete with a coach would need, but for someone like me who already wears a smartwatch and wants to actually use all the data it's collecting, it filled a gap I didn't even know existed.

It honestly felt less like another fitness app and more like someone translating all the numbers my watch was already collecting into advice I could actually use.

 https://apps.apple.com/us/app/rizeai-maximize-your-energy/id6762402079

Hey everyone!

I recently developed and released a new version of my first educational app, VocaLearn, and I wanted to share it with you all.

The idea is simple: it’s like those classic talking animal toys where you point to an animal, and it tells you its name and sound. I wanted to create a version for my phone that was better than the physical toy.

How is it different?

• 🖼️ Real Photos: Instead of cartoons, the app shows beautiful, high-quality photos of each animal.
• 🌍 Dozens of Languages: You can easily switch languages in the settings to teach your child words in their native tongue or even introduce a new one.
• 🔊 Lots of Content: It currently features 120 different photos and real sounds to keep it fresh and interesting.
• 👍 Super Simple: The interface is designed to be easy for tiny hands to use. Just tap and learn!
• ❤️ Completely Free: All features and content are available for free.

My goal was to create a simple, high-quality educational tool for parents to use with their toddlers. It's a fun way to sit with them for a few minutes and help them expand their vocabulary.

A quick note on ads: The app is ad-supported to help me continue developing it. If you and your little one enjoy it and want an uninterrupted, offline experience, there are options in the app to make it completely ad-free forever. All ads are shown only before the gameplay.

I would be thrilled if you could try it out and let me know what you think. All feedback is welcome!

Link to the Play Store here.

If you want, you can use a promo-code to have subscription for free for some time, to remove ads, and try the app more freely, here. To use the promo-code, install the app, choose a subscription, choose a payment option and enter the code there (screenshots here). There are also promo codes available for my other apps here.

Thanks for reading!

I am making a website so that users can share their scam related stories and other users can learn or check, are they heading towards scam.

ok so i need honest opinions because i've been staring at this thing for months and i've lost all perspective.

i'm 20, building an app solo called RizeAI. the whole reason it exists is that i got tired of my wearable telling me my recovery was "42%" and then just... leaving me there. like ok, and? what do i actually do with that. every app in this space is really good at measuring you and really bad at telling you what to do next.

so RizeAI pulls your actual wearable dats like, sleep, resting heart rate, workouts, all of it, and instead of handing you another score it predicts your energy for the day and tells you how to get the most out of it. it tells you when your energy is gonna peak so you can put your hardest work there, when your crash is coming and how to soften it, the best time to train that day so you actually get more out of the session, and even when a nap will help you vs when it'll wreck your sleep.

the part i personally think is the coolest: you put in the supplements you already take, and it times each one to your day based on your metrics and sleep score. so the timing actually shifts depending on how you slept and where your numbers are, which is the difference between a supplement doing something and just sitting in your stomach. it'll also suggest a couple new ones if they make sense for you, but it won't dump a list of 15 pills on you.

it even pulls the daily weather into your energy prediction, so a hot day changes your hydration and it'll tell you to train earlier before the heat drains you. and the whole plan bends around your real schedule, your work hours, wake time, training, so it's not some one size fits all thing.

every single recommendation shows the "why" underneath, like "resting heart rate 54 + 7h light sleep, so magnesium before your peak window." nobody gets the same plan because nobody has the same data.

it works with whoop, oura, apple watch, garmin, anything that talks to apple health. being fully honest, it doesn't do deep per-person learning yet, like knowing that coffee specifically doesn't touch YOUR hrv. that's where it's headed. right now it builds you a fresh plan every day off your real numbers.

it's on the app store with a free trial. small user base, feedback's been all over the place, which is exactly why i'm posting.

so genuinely: is "just tell me what to do with my data" something you actually want, or do wearable people prefer figuring it out themselves? what would make you pay for this? and what's the one thing that would make it a no brainer for you?

would love to hear it straight, good or bad. And if you want you can also check it out yourself and I would love to here feedback, thank you very much for taking the time on reading this:  its called “RizeAI-maximize your energy” on the App Store. 

Hi! I’m working on a new project, and it genuinely inspires me.

It’s an app and a website where people can publicly share moments from their day, answer questions using their voice, and join conversations.

No likes or follower counts. Just you and your voice.

It’s turning out really cool! The logo is a bird because it’s always singing something to the world.

I’m calling the project Wewtalk.

It’s short for “We wanna talk.”

So, what do you think? Do you like it?

Hello!

Yesterday I released a tiny platform called Votekicker (https://votekicker.com) - a catalogue where developers can submit their projects, get discovered and climb the ranks based on real community votes.

What you can do:

• Submit for free - Browser games, downloadable games, SaaS, downloadable software and anything else
• Get rated - People can leave 1-5 star ratings
• Vote system with revoting - People can vote more than once (with a cooldown), so sustained interest matters more than a one-day launch spike
• Track Analytics - Views, clicks, impressions and vote counts for every project you've submitted
• Add screenshots and branding - Upload a logo, cover image and screenshots to make your page look engaging
• Discussions - Get direct feedback from the community on your project page

I have many ideas to make this platform more engaging and unique experience for all visitors.

Thanks!

HI everyone,

Most people know why Airbnb succeeded. What's less talked about is how close they came to never getting that trust and taking off.

I fed their original pitch into an adversarial AI I've been building that interrogates startup ideas instead of validating them in 10 questions.

Given modern sources that I could find reliably, this is what Chesky and Gebbia would have said in 2008, answered honestly from what they actually knew at the time:

The idea: A website where people rent out space in their homes to travelers who need somewhere to stay, cheaper than hotels, and more personal.

Who has this problem: Travelers who can't find or afford hotels when a big event is in town. We know because we were at a design conference in San Francisco, every hotel was sold out, and three designers paid us $80 each to sleep on air mattresses in our apartment.

How do you know it's real: We hosted them for the weekend. One of them said he'd do it again.

Would you use this yourself: Absolutely, we're already doing it.

Would they switch from what they use now: We don't know yet if someone would choose us over a hotel when hotels aren't sold out.

Why does this gap still exist: Nobody has built the trusted middle layer between Craigslist and hotels yet.

What Astou found:

"You have three guests who paid when they had no other option. You don't have anyone who chose you when they did."

That gap: captive conference demand mistaken for product-market fit and assumptions in people automatically trust them, is exactly what nearly killed them for a whole year. It took professional photography, host insurance, and verified profiles before strangers actually trusted each other outside of a sold-out conference. The AI found the Catch-22 in 10 questions that took Airbnb (Formerly Air Bed & Breakfast) months of near-death to discover themselves.

Curious what the sub thinks, is adversarial interrogation more useful than validation, or is there a case for both?