RapidNative free tools - 12 free AI tools for every stage of building your mobile app

Hey PH! I'm from the RapidNative team and I built most of these tools over the past few months. Quick backstory — RapidNative is an AI mobile app builder where you describe your app and get real React Native code. We talk to founders and builders every single day. And what we kept hearing wasn't "help me code faster." It was stuff like: "How much would this cost if I hired a dev shop?"  "Can you look at my PRD?"  "Is this idea even worth building?"  "I have no idea what to put in my App Store listing"So we started building these as side tools. One turned into two, two turned into twelve. Every tool is completely free — no login, no email capture, no "sign up to see your results" nonsense. A few I'm personally proud of: • The PRD Generator — this one saves hours. Paste a two-sentence idea, get back a structured PRD with user stories, functional requirements, success metrics, and a timeline. We've had PMs tell us they use it as a starting template for every new feature. • The Cost Calculator — it gives you a realistic breakdown by region (India, US, agency) with timelines, team size, and architecture. We wanted founders to walk into meetings with actual numbers instead of guessing. • The ASO Checker — most indie devs ship their app and completely forget about the listing. This scores your title, subtitle, keywords, and description and tells you exactly what to fix. Would love your feedback on any of them. And if there's a tool you wish existed for app development that we haven't built yet — drop it in the comments. We're already planning the next batch.