How to win Shipyard
·External
A hackers guide to building an MVP that can win RevenueCat's Shipyard hackathon
I build stuff.
Hi, I'm Perttu Lähteenlahti — a developer and designer based in Finland. I've spent the last decade designing and building digital products, from mobile apps to web platforms.
Currently, I work as a Senior Developer Advocate at RevenueCat, where I help developers build and monetize their apps. My focus is on React Native, cross-platform development, and making in-app purchases less painful. You can read more about me, or see what I'm up to now.
Articles & Tutorials
I write about React Native development, mobile app monetization, in-app purchases, and lessons learned from building products. Here are some of my recent posts.
What I'm reading in 2026
Overengineered approach to tracking how many books I've read in 2026, with filtering, auto generated images, and progress bars
How to add subscriptions to a Bolt app
·External
Learn how to monetize the app you created with Bolt using RevenueCat SDK and few lines of code.
Flights of 2025
A visual breakdown of my travel in 2025: 57 flights across 7 countries, from conferences in the US to quiet weeks in Finland.
Recent Talks
How to make money with your Flutter app
FlutterKaigi 2025
Building & monetizing a React Native app for three platforms in 20 minutes
React Advanced London 2025
Why React Native apps make all the money
React Conf 2025
Work
- Company
- RevenueCat
- Role
- Senior Developer Advocate
- Date
- Company
- Fenrir Digital
- Role
- Founder
- Date
- Company
- Noice
- Role
- Senior Mobile Developer
- Date
- Company
- Veri
- Role
- Product Lead
- Date
- Company
- Mavericks
- Role
- Senior Software Engineer
- Date
Download CV
