Three apps on the App Store, and a lot of finished experiments.
SEO Console, Netli.fyi and Convivial are the apps I still ship updates for. Alongside them: a couple of live sites, a few open-source libraries, and an archive of projects in varying states of alive. Code is linked where it exists.
On the App Store
On the web
Fenrir Digital
fenrir-digital.com
My software studio. React Native apps and Next.js sites for clients, plus our own iOS apps.
Eames asunnot
eames.fi
Eight apartments in Pori and Helsinki that I designed and renovated myself. Two are open for stays, booked direct with no platform fees.
Shipaton Showcase
apps.shipaton.com
Every app, game and winner from Shipaton 2024, 2025 and 2026, scraped and filterable.
React Native Finland
react-native.fi
Home of the Finnish React Native community: Helsinki meetups, a developer directory and tutorials.
Intelligenzia
intelligenzia.fi
Site for Intelligenzia ry, the cognitive science alumni association at the University of Helsinki.
Open-source libraries
App Store Scraper
Typed scraper for iTunes and Mac App Store data: apps, ratings, reviews, search. Powers the app pages on this site.
$ npm i @perttu/app-store-scraper$ npm i @perttu/testflight-scraper$ npm i @perttu/galaxy-store-scraper
Everything else
Nyxo
iOS
Sleep tracking and coaching, syncing from Oura, Withings, Fitbit, Polar, Apple Health and Google Fit.
Contentfully
iOS
A React Native client for Contentful, for editing content from your phone.
konkurssit.live
iOS
Tracks Finnish bankruptcy filings, built with Expo and Supabase.
- S
Saunuas
iOS
A sauna log built on Expo and Supabase.
Vercelly
iOS
A native iPhone client for Vercel: deploys, build logs, rollbacks and widgets. In public beta.
Tiedekunta
Web
Site for a study circle, on Expo Router and Contentful.
Spin-a-ton
Web
A spinning-wheel raffle app, built for RevenueCat.