React-Native-Godot

The React Foundation: The New Home for React and React Native

React-Native-Nim – Starter Template for React Native to connect a Nim back end

A React Native Implementation of the U.S. Web Design System

React Native Upgrade: How to Tackle the Mission

New Home for React and React Native

Tailwind for React Native with zero-runtime overhead

Compile-time Tailwind CSS for React Native with zero runtime overhead

React Native 0.82 – A New Era

Show HN: Horcrux: Split files into encrypted fragments for Node and React Native

Hi HN! I built Oh Yah! to help my sons (age 7 and 10) stick to daily routines without constant reminders. The core idea: minimal distractions during tasks by locking navigation when a timer is running, plus optional photo-based task completion for accountabilityBuilt with React Native&#x2F;Expo and Firebase. The trickiest part was designing the UX to be simple enough for kids with minimal distractions while giving parents enough control – ended up with a task-definition system that lets parents create weekly schedules with daily toggles instead of duplicating tasks across daysIt&#x27;s on the App Store now after a few months of dogfooding with my family. There&#x27;s a 1-month free trial, then it&#x27;s subscription-based. Would love feedback from other parents dealing with similar challenges

Show HN: Oh Yah – Routine management app I built for my sons

Hey everyone,I&#x27;ve just published my first app to the App Store. And it is (yet another) Hacker News Client.The app is built with Expo&#x2F;React Native, making the most of native iOS features like liquid glass, native tabs, link previews and context menus. (Android version coming soon).There is no paywall, no monetization, and no crazy features for now. I just wanted it to be pleasant and native to use. You can also log in with your HN account so you can comment an upvote.I hope you like it, and any feedback is much appreciated!Links:- GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;danielcspaiva&#x2F;hacker-reader" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;danielcspaiva&#x2F;hacker-reader</a>
- Website: <a href="https:&#x2F;&#x2F;hackerreadder.app&#x2F;" rel="nofollow">https:&#x2F;&#x2F;hackerreadder.app&#x2F;</a>
- My blog: <a href="https:&#x2F;&#x2F;dcsp.dev&#x2F;" rel="nofollow">https:&#x2F;&#x2F;dcsp.dev&#x2F;</a>

Show HN: Hacker Reader – A clean, open-source Hacker News client for iOS

Mental arithmetic has been a hobby of mine for a while. It&#x27;s fun and good exercise for your brain.When I switched to iOS, I couldn’t find a decent app. Most had ads, sign-ups, excessive gamification, or mandatory subscriptions, and none were customizable enough. So I built my own.Athena Math lets you- Practice operations not normally found in mental math apps: modulo, square roots, percents, GCD and LCM
- Tailor each session: set your time or problem limits, choose digit ranges (1–5), mix digit lengths (e.g. 55 + 436), and select any combination of operations you like.
- A detailed stats screen that shows the time you spent on problems, problems per day, percent correct, etc. All graphs are filterable.
- A history screen that shows all your sessions.
- You can import and export your history for offline analysis or to transfer
- Offline tutorials are included for all operations
- Lastly, you can use it immediately. There are no accounts.So far, it&#x27;s received a positive response from the mental math community. It&#x27;s an incredible feeling to have people actually value my work enough to pay for it. (This was my first app).I&#x27;ve had a lot of fun building Athena math and using it myself. Practicing obscure operations like GCD, LCM and square roots has taught me to see patterns in numbers that I didn&#x27;t see before. Overall, it&#x27;s improved my number sense.It&#x27;s built in React Native + Expo&#x2F;EAS. I use Fastlane to manage app store metadata (and store in version control), and it&#x27;s using a serverless AWS backend for payment verification. History is stored locally in an SQLite database.It&#x27;s free to use! You&#x27;re limited to 12 sessions daily, but if you wanna keep using for free, you can simply delete your daily sessions. You loose history and stats, but it&#x27;s an option. You can also just set the time limit to infinity.I know mental math is not the sexiest market, but I&#x27;d love feedback from the HN community -- on the app, the UX, or the technical setup. Any ideas for improvement? What are your thoughts?Thanks for reading and happy hacking!

Show HN: I built a highly customizable mental arithmetic trainer for iOS

Hey HN — I&#x27;m David, and I built Photerra to solve a problem I kept running into: planning trips meant juggling dozens of browser tabs, Google Sheets, and the same recycled &quot;top 10&quot; lists everyone else sees.Photerra turns geolocated photos into map spots you can organize into trips, share with friends, and book from — all in one flow.The core idea: photos with GPS → actual spots on a map → drag into trip days → share → book.What makes Photerra different:• Real locations, not just POIs — Your photos have EXIF GPS data, so you&#x27;re adding exact spots (that actual spot on the trail, not just “Yosemite” - no address needed).• End-to-end flow — Discover → plan → coordinate → book, without switching between 5 apps.• Photo-grounded data — Community spots come from real photos, not scraped listicles, so you find more off-path places.• Works for everyday wandering — Not just big trips. Save local spots and open them in Maps or Uber with one tap.Try it: iOS and Android apps are live (links in comments). I&#x27;ve seeded content in SF, Portland, LA, San Diego, Hawaii, Philly, Yosemite, and Mexico City.Tech: React Native + RN-Maps on mobile; NestJS + TypeORM&#x2F;MySQL + AWS on backend.What I&#x27;d love feedback on:• Is the photo→spot→trip flow intuitive on first use?• What&#x27;s missing to make this truly start-to-finish for your trips?• Any friction in auth, maps, or sharing?Be blunt — it&#x27;s helpful. Happy to answer questions!— David (solo, first-time founder)

Show HN: Photerra – One app to discover hidden gems, plan with friends, and book

I built an app with a Duolingo-style structured learning system where users can generate full courses from photos, documents, or typed input. Each course includes quizzes, flashcards, and notes, and users can also turn their notes into an AI-generated podcast for audio learning.It’s designed to help students and anyone who wants to learn a topic study smarter and retain more through interactive lessons, quizzes, and podcasts tailored to their learning style.Built with React Native Expo.<a href="https:&#x2F;&#x2F;youtu.be&#x2F;jsRk1vN1xNA?si=iMGZFhj_N2iwBp5n" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;jsRk1vN1xNA?si=iMGZFhj_N2iwBp5n</a>

Show HN: Recallie AI – Duolingo for learning anything

Hey HN,I&#x27;m Mark, a bootstrapped and solo founder who spent the last few years building custom mobile apps for influencers and creators in the health, finance, and wedding planning niches. The pattern I kept seeing: creators with distribution (viral content, audiences) but were under monetizing them.So I built Mozy.ai - a tool that takes you from prompt to deployed mobile application in minutes. It&#x27;s a complete browser-based IDE (goodbye XCode) for React Native&#x2F;Expo apps. Think of it like Bolt.new but specifically for mobile. You can go from idea to a deployable app without leaving your browser.What makes it different:
- User auth, database, payments, and deployment credentials all integrated
- Live preview as you build
- Production-ready code you can export, own, and deploy
- Built for founders who want to move fast on mobileI&#x27;m not quite ready to share this with friends and family yet (still feels embarrassing), but I&#x27;d love feedback from the HN community (i.e. anons). If you&#x27;re interested in testing it out, there&#x27;s a promo code &quot;FRIENDS20&quot; you can use or not - would appreciate any and all support.This is my first launch and I&#x27;m super excited about it!! Let me know what you think :))Godspeed,
Mark

Show HN: One prompt mobile apps deployed to app store

Hi HN!I built OXH AI - an AI-powered cryptocurrency signal platform that generates real-time trading signals using technical analysis and machine learning.What it does:
- Generates AI trading signals for 100+ crypto pairs (Bitcoin, Ethereum, etc.)
- Real-time technical indicator analysis (RSI, MACD, Bollinger Bands, EMA)
- Risk scoring and position management
- Auto-backtesting with historical data
- Live chart integration with TradingView-style interfaceWhy I built this:
Most crypto signal platforms are either:
1. Black boxes with no transparency
2. Manual signals from &quot;gurus&quot; (often wrong)
3. Expensive ($100-500&#x2F;month)I wanted something transparent, AI-driven, and affordable.Tech Stack:
- Frontend: React + TypeScript + Vite
- Backend: Node.js + Express + TypeScript
- Database: Supabase (PostgreSQL)
- AI: OpenAI GPT-4 for market analysis
- Real-time: WebSocket for live updates
- APIs: Binance, Bybit, OKX for price dataInteresting Technical Challenges:
1. Race Condition Prevention: Implemented optimistic locking for Telegram auto-posting to prevent duplicate messages
2. Schema.org Optimization: Added LocalBusiness + Organization markup for better Google indexing
3. Rate Limiting: Built custom rate limiter that handles 50K+ API calls&#x2F;day
4. Real-time Updates: WebSocket connections for live price &amp; signal updatesFeatures:
- Free tier: 5 signals&#x2F;day (no credit card)
- Paid tier: Unlimited signals + advanced analytics
- Referral system with leaderboard
- Blog with auto-generated crypto content (2x daily)
- Crypto news aggregation (updates every 2 hours)Privacy &amp; Security:
- No trading API keys stored (non-custodial)
- Read-only market data
- 2FA&#x2F;MFA support
- GDPR compliantWhat&#x27;s Next:
- Mobile app (React Native)
- More exchanges (Kraken, Coinbase)
- Advanced AI models (custom-trained on crypto data)
- Social trading featuresTry it free: <a href="https:&#x2F;&#x2F;www.oxher.com" rel="nofollow">https:&#x2F;&#x2F;www.oxher.com</a>Open to feedback and questions! What features would you find useful?

Show HN: OXH AI – Open-Source AI Crypto Signal Platform with Real-Time Analysis

How it works:Copy a YouTube link → open app → it auto-detects from clipboard, pulls metadata + transcript, and generates a structured summary (key points + narrative) in seconds. No inputs, no pasting, no prompting. Supports 60+ languages for summaries, the video&#x27;s language doesn&#x27;t matter.Why I built:I had an endless queue of educational videos but no time to sit through rambling or clickbait. ChatGPT flow = copy → open → paste → prompt → pray it formats correctly. Existing summarizers felt feature-bloated or unreliable. I wanted something super minimalist: “clipboard → value” on repeat.Decisions:Stack
 — React Native 0.81 (New Arch) + TypeScriptClipboard trick— Monitors clipboard on app start&#x2F;resume — no manual pasteCaching— Stores transcripts + summaries in AsyncStorage with metadata— fast image library prevents repetitive refetchingAPIs— YouTube metadata— Third-party transcript provider (exploring Whisper)— OpenAI for summarizationOutput— Structured prompts → consistent format across 60+ languages— Easter egg: philosophical analysis for songs&#x2F;poemsTime-saved calculation— Uses actual video length (30% of cases)— Fallback = estimated from average speech speedMain headache:Grandfathering legacy users without breaking App Review was harder than I expected. The first version was paid upfront ($14.99 or leave). Got some sales in the first two weeks, then traffic died. After some internal fighting, I switched to free-to-try with IAP. By then I already had thousands of users I’d promised free access forever, plus a dozen who actually paid. I wanted to keep my word and never show them a paywall.RevenueCat’s originalAppVersion looked perfect… until I actually used it.. Turns out it’s not the marketing version (1.0, 2.3), but the build number (the variable name originalAppVersion is so misleading…). And Apple Review&#x2F;TestFlight always report it as 1.0, so reviewers looked like legacy users and never saw the paywall (5 rejections). Everything worked for me, totally broken for them.My mistake: I auto-entitled anyone with 1.0. First hacky fix: show a review-only paywall. Proper fix: if originalAppVersion === &quot;1.0&quot; (I never had such a build number anyways), treat as non-legacy. Days of digging and testing across devices&#x2F;envs… finally approved.Current state:3800+ users and 12 sales within 2 weeks post-launch, 4.9-star rating globally. Now multi-tier subscription after 3 free summaries due to ongoing costs and long-term value.Limitations&#x2F;Challenges:— iOS only for now. Android clipboard monitoring is restricted—would need a different UX.— Some countries need VPN due to API restrictions; I notify users on app start.— Dependency on third-party transcript API (evaluating OpenAI-based solution).— YouTube&#x27;s testing AI conversational tools, but it&#x27;s not quite the same thing, sandboxed only for some users and unlikely to roll out widely as it cuts ad their revenue from watching.Happy to answer questions about implementation or share code snippets if helpful.<a href="https:&#x2F;&#x2F;apps.apple.com&#x2F;us&#x2F;app&#x2F;esse-ai-video-summarizer&#x2F;id6751778111">https:&#x2F;&#x2F;apps.apple.com&#x2F;us&#x2F;app&#x2F;esse-ai-video-summarizer&#x2F;id675...</a>

Show HN: I made a clipboard-triggered YouTube summarizer (no paste, 2 taps)

Hey HN! I built Schedulist to solve my own problem: task fragmentation across Linear (work) and personal&#x2F;smaller tasks and also only see what I need to see next (inbox zero).The core insight: most productivity apps want you to migrate everything to their system. Schedulist takes a different approach - it connects to where your tasks already live.In 2.0, we&#x27;ve added some new things:
- Linear integration (for developers&#x2F;PMs using Linear)
- Microsoft ToDo &amp; Google Tasks sync
- Swipe actions to complete and schedule tasks for later
- Effortless recurring tasks
- Mobile share sheet support for quick capture from any appIt&#x27;s available on iOS, Android, Mac, and web.Technical stack: Expo&#x2F;React Native, GraphQL, NodeWould love feedback, especially from folks using Linear + other task systems!

Show HN: Schedulist Tasks and Planner

# This is a Expo Framework

Expo is a framework and a platform for universal React Applications. 
It is a set of tools and services built around React Native and native platforms that help you develop, build, deploy,
and quickly iterate on iOS, Android, and web Apps from the same JavaScript/TypeScript codebase.

# Requirements

- Node.js LTS release or greater
- Git
- Watchman for macOS users

# Recommended Tools

- VSCode Editor
- Yarn
- Windows users: PowerShell or Bash via WS

# Installing Expo CLI

```bash
 # install the command line tools
 npm install --global expo-cli
```

## Getting Started 

Create a new app:
At this point we should have Expo CLI installed on our development machine and the Expo Go App on an iOS or Android physical device or emulator.
If not, go back to the Installation guide before proceeding.

# Initializing the project

```bash
# Create a project named my-app.
# Select the "blank" templata when promped
expo init my-app

# Navigate to the project directory
cd my-app
```

First, run the development server:

```bash
expo start
# or
npm start
```

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ReactNative News

News From: hn.algolia.com

React-Native-Godot

The React Foundation: The New Home for React and React Native

React-Native-Nim – Starter Template for React Native to connect a Nim back end

A React Native Implementation of the U.S. Web Design System

React Native Upgrade: How to Tackle the Mission

New Home for React and React Native

Tailwind for React Native with zero-runtime overhead

Compile-time Tailwind CSS for React Native with zero runtime overhead

Compile-time Tailwind CSS for React Native with zero runtime overhead

React Native 0.82 – A New Era

Show HN: Horcrux: Split files into encrypted fragments for Node and React Native

Show HN: Oh Yah – Routine management app I built for my sons

Show HN: Hacker Reader – A clean, open-source Hacker News client for iOS

Show HN: I built a highly customizable mental arithmetic trainer for iOS

Show HN: Photerra – One app to discover hidden gems, plan with friends, and book

Show HN: Recallie AI – Duolingo for learning anything

Show HN: One prompt mobile apps deployed to app store

Show HN: OXH AI – Open-Source AI Crypto Signal Platform with Real-Time Analysis

Show HN: I made a clipboard-triggered YouTube summarizer (no paste, 2 taps)

Show HN: Schedulist Tasks and Planner