Perttu Lähteenlahti

Author’s posts

• How Shipaton turned Mansour Mahamat’s hobby app in to a business

  • Engineering

  How a Jiu-Jitsu black belt used Shipaton to turn a coding experiment into a subscription app used worldwide

  

• How to win Shipaton part 3: growing your app

  • Engineering

  Tactics to get your first 100 users and show real momentum during Shipaton

  

• How to win Shipaton part 2: building fast

  • Engineering

  A time-boxed framework to build, test, and ship your Shipaton app before the clock runs out.

  

• How to monetize your AI app with virtual currencies

  • Engineering

  A React Native tutorial for building an in-app virtual currency economy that buys bedtime stories, powered by LLMs

  

• How to win Shipaton, part 1: coming up with an idea

  • Engineering

  Don’t know what to build for Shipaton? A 45x hackathon winner breaks down how to find and validate app ideas that solve real problems—and have a shot at winning.

  

• How Rudrank Riyam won Shipaton’s Build in Public Award by sharing every step

  • Company

  Behind the scenes of a Shipaton-winning launch — from prototype to community-powered release.

  

• From first app to WWDC winner: Leandro Tolaini’s Shipaton story

  • Company

  How building his first app led Leandro Tolaini from Shipaton to winning WWDC's Student Challenge

  

• A Beginner’s guide to implementing an ad-free subscription in your Flutter app

  • Engineering

  A step-by-step tutorial to let users pay to remove ads—using AdMob, and RevenueCat

  

• A beginner’s guide to implementing ad-free subscriptions in your React Native app

  • Engineering

  A step-by-step tutorial to let users pay to remove ads—using Expo, AdMob, and RevenueCat

  

• How to build a Blinkist-style paywall using RevenueCat webhooks and Zapier

  • Engineering

  Build a Blinkist-style paywall with RevenueCat and Zapier—no backend required.

  

• How to add subscriptions to a Bolt-generated Expo app

  • Engineering

  Want to add in-app subscriptions to your Bolt app? This guide shows how to build a working paywall UI using prompts only, then integrate RevenueCat to handle real purchases and entitlements on Android using EAS Build.

  

• Build a single Expo app with subscriptions on iOS, Android, and Web using RevenueCat

  • Engineering

  Use one React Native codebase and RevenueCat’s Web Billing SDK to support subscriptions across platforms in 30 mins