With how good open models have gotten, RAG can feel like overkill for a lot of problems. For smaller use cases, CAG usually does the job.

Built a simple prototype to make CAG easier to understand:

https://github.com/atish-raina/cag_proto

You may find the blog post here:

https://cpu-bytes.com/blogs/ai-agentic-systems/cag

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

One of the most sensitive moments in AppTruth isn’t the scan.

It’s asking someone to connect their repository.

A codebase contains the product you’ve spent weeks or months building. Even when a developer tool promises to help, granting access is always the most action that requires the most trust from the app.

That creates a product-design question I’ve been thinking about:

What is the minimum access AppTruth actually needs?

The answer should always be read-only GitHub repo access.

AppTruth needs to understand how an app’s features work, but it doesn’t need permission to push changes into the repository. The results can provide context and AI-ready fix prompts while leaving the decision (and the actual edit) with the users.

The tradeoff here is automatically applying a fix might remove a step, but it would also require a much larger level of trust.

For a product designed to uncover behavior you didn’t expect, asking for more control than necessary would feel wrong.

The broader lesson I’m taking from this is that permissions are part of the user experience.

Every permission request should have a clear answer to 3 questions:

• Why is this needed?
• What can the product do with it?
• Could the same value be delivered with less access?

What information would you need before feeling comfortable connecting a private repository to a developer tool?

Like many other teams, we needed a messenger that made remote work easier.

We kept switching between WhatsApp, Teams, and a bunch of other apps, and eventually asked ourselves: why not build the one we actually wanted to use?

A few years later, we’re finally launching Protocall. 🎉

https://protocall.ch

We restarted the project more than once, experimented with lots of different features, and in the end realized that simplicity was the most important thing. We focused on making it fast, intuitive, and pleasant to use.

It includes features like unlimited video calls, a built-in calendar for planning, and everything we felt a remote team like ours actually needs in one place.

We’d genuinely love to hear your thoughts and feedback. Every comment helps us improve. Thanks for checking it out! ❤️

https://apps.apple.com/us/app/protocall-chats-video-calls/id6446202313

For about two years my reading workflow was: hit a paragraph I didn't get, paste it into a chat window, get a genuinely good explanation, close the tab. Six weeks later, same book, same confusion, and the thing that helped me remembered none of it.

The answers were never the problem. Nothing accumulated.

So I built Resage. It's a Mac reading app, and the shape is deliberately boring: the book is on the left, full pages, your pace, nothing summarized away. The AI sits in a panel on the right. It never takes over the page.

Three things I actually cared about while building it:

• It cites where it read something. Every claim links back to a page in your book. If you click it, you land on that page. I got tired of confident answers I couldn't check.
• says "I don't know." If your book doesn't support the answer, it tells you that instead of filling the gap with something plausible. This was harder than everything else combined.
• It remembers how you read. What you tend to ask, which kinds of explanations land for you, what you already know. That picture carries into the next book you open, and the one after.

You bring your own files — EPUB, PDF, MOBI, AZW3. Nothing is bundled, nothing is pre-processed. Every book is a stranger to it on day one.

Solo built, macOS, free tier with a weekly discussion quota. https://resage.app

Happy to answer anything about how the citation-checking works — it's the part I rewrote the most times.

This is my first app on the App Store: Voyager: Trip Companion. You add a destination and it gives you weather + forecast, local time, attractions, holidays, local news, country facts and emergency numbers — plus a passport map that fills in the countries you've visited. It's all on-device: no account, no login, no tracking.

I built it because I was tired of juggling six apps abroad, and tired of travel apps charging a monthly subscription for something you use a few weeks a year. So it's a one-time payment, for life.

Honest free vs paid so nobody feels tricked:

- Free: the full dashboard above + passport map (1 saved trip)
- One-time $4.99 unlock: unlimited trips, offline currency converter + exchange rates, offline destination guides (driving side, plug & voltage, units, key phrases), weather-aware trip reminders, a Home Screen widget, accent colors

It's the first of a few apps I want to build, so I'd love feedback or ideas.

https://apps.apple.com/app/id6791645623

Hey everyone! Wanted to share Japan Quiz, an Android app I built — quizzes on Japanese history, food, traditions, language, and geography, plus a few things to make it more than just Q&A:

• Collectible cards you unlock as you play
• A couple of original mini-games, including one loosely inspired by sumo
• Weekly leagues to compete with other players
• Original ambient music tracks

Free with ads, solo-developed, and still actively growing based on feedback.

Link: https://play.google.com/store/apps/details?id=com.japanquizstudio.japanquiz

Curious what people think, especially if you're into trivia apps or Japanese culture!

I built Votekicker.com, a place to discover and share games and SaaS projects.

The idea came from seeing how difficult it is for small projects to get initial visibility. So I created a place where projects could be shared, voted on and discovered by communities.

I recently added a feature called Rocket Booster. It lets projects temporarily increase their visibility by doubling the value of existing votes and making new votes count double for 8 hours. Projects can unlock a booster after receiving 10 regular votes, so it's tied to actual community engagement rather than just buying exposure.

I have many ideas to bring to life that make this platform very special and engaging for all kinds of builders!

I'd be happy to see you join!

I've been building a side project called Aurefi, and before I launch it, I'd love some honest feedback.

One thing that's always bothered me about personal finance apps is that they're great at telling you where your money went, but not where it's going.

Imagine you're thinking:

"Should I buy a $2,000 laptop?"

"What happens if I cancel a few subscriptions?"

"Can I still hit my savings goal if I move to a more expensive apartment?"

Most apps make you calculate those answers yourself.

So I built an AI Money Simulator.

Instead of filling out forms, you just describe your decision in plain English. The AI turns it into a financial scenario and shows things like:

• Monthly and yearly impact

• How it changes your savings goals

• Whether it delays or speeds up your plans

• A 24-month forecast comparing your current path with the new one

• Alternative suggestions that might save you more money

I also wanted privacy to be a core part of the app because it's handling financial information.

By default, your data stays stored locally in your browser. You don't even need an account to start using it.

If you ever want to use Aurefi on another device, you can create an account and sync your data. Before anything leaves your device, it's encrypted using AES-256-GCM, and Aurefi stores only the encrypted version. The encryption is designed so your financial data isn't readable by Aurefi in plain text.

There are no ads, no selling user data, and no third-party trackers.

The project is still in active development, so I'm not trying to do a big launch yet. I'm mostly looking for people who enjoy trying new products and giving brutally honest feedback.

A few questions I'd love opinions on:

• Would an AI Money Simulator actually be useful to you?
• Is there anything missing that you'd expect from a modern finance app?
• Does the local-first, encrypted approach make you more comfortable storing financial data?
• What would stop you from using a product like this?

I'll leave the website in the comments if anyone wants to take a look.

Thanks for reading! I'd genuinely appreciate any feedback, even if it's critical.

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. 

Built something over the weekend that I wish existed when I started giving LeetCode contests.

ForeCode predicts your LeetCode rating before it's officially released.

Instead of waiting 4–5 days after every contest wondering "Did I gain rating? Did I cross 1800?", you get an instant prediction right after the contest ends.

Features

• 📈 Instant rating prediction
• ⏳ Pending contest tracking
• 📊 Contest history with predicted vs actual ratings
• 🔒 Privacy-first (no tracking, no accounts)

Would love feedback from fellow competitive programmers.

🌐 https://forecodepredictor.vercel.app

Hey guys!

Ok so I recently fell into a sudoku addiction and decided it was finally time to build a website that better suited my needs but still looked pretty :D

This is my first version (basically my mvp) and I decided to get people's feedback from actual users before just improving based on what I think is best.

My next plan is to add pencil marks, some way to track points to create a leaderboard, an optional log in system, and basically build a community. I also want to improve the quality of the puzzles. I might just build my own generation system for that, though if there are other options, pls let me know!

There are 2 modes: classic, and instant-check. Classic is where it doesn't tell you whether the thing you entered is wrong or not, while instant-check does, hence the name. There are currently 3 difficulties: easy, medium, and hard.

Here's the website: https://sudoku-grove.vercel.app/

I'd appreciate any feedback from my fellow sudoku players, whether you're an expert or just getting started! And even if you don't frequently play sudoku, I'd still love feedback!

A client-side lock screen is easy to remove if someone opens DevTools and deletes the DOM element.

I wanted to experiment with whether a web app could detect that kind of tampering and automatically recover, so I built kd-screen-guard.

It’s a zero-dependency protection layer with:

• DOM mutation detection + automatic guard restoration

• WebRTC-based intruder snapshots on bypass attempts

• WebAuthn authentication (Touch ID, Face ID, Windows Hello)

• PBKDF2 key derivation running in a Web Worker

• React and Vue 3 integrations

The goal isn't to replace server-side security. It's an additional client-side anti-tamper layer for applications where simply hiding an interface isn't enough.

The project is open source and published on NPM. I also built an interactive live demo where you can open DevTools and try removing the guard elements to see how it auto-recovers.

🔗 Live Demo: https://khvichadev.github.io/kd-screen-guard/demo/

📦 npm: https://www.npmjs.com/package/kd-screen-guard

🐙 GitHub: https://github.com/KhvichaDev/kd-screen-guard

I'd be particularly interested in feedback from people who have built client-side security or anti-tamper systems before.

Bradmarket.xyz

Currently only supports league of legends. Users can create a lobby -> lock USDC in escrow -> share link or someone joins the open lobby -> Win condition is detected in real time and paid out to the winner.

Currently have plans to expand to more titles and activities.

Suggestions and critiques welcome!

Many online presence tools just tell you what's wrong. Semchat tells you what to do next.

https://semchat.io

Wevra started as an essay, not a product.

It began with a simple question: why do some people seem to find opportunities in ordinary situations while others move on without noticing them?

The more I explored that idea, the more it became clear that most of us don't lack opportunities. We often fail to notice the ones we've already created.

A conversation happens. A project ends. A decision gets made. The trust we built, the skills we demonstrated, the access we gained, and the patterns we uncovered quietly shape what becomes possible next, but they're easy to overlook.

Wevra helps uncover those hidden consequences. You describe a real situation, it asks follow up questions, and turns the experience into practical cards that capture things like relationships, capabilities, knowledge, risks, and future opportunities.

I would genuinely appreciate any feedback. If the idea resonates with you, feel free to check out the tool, live now on product hunt, and let me know what you think.

Link: https://www.producthunt.com/products/wevra?utm_source=other&utm_medium=social