Built with care
Quality over quantity. Every app is rigorously tested, actively maintained, and shipped to real users.
fonskii - Ski Tracker
Track altitude, speed, and vertical on every ski run. 6,851+ resorts worldwide, 38 languages. Everything you need on the mountain.
BeLoop - Boxing & Workout Timer
A coach calls your combos out loud while you work, and times everything else you train. Boxing, Muay Thai and kickboxing, plus six timer modes. Apple Watch and Wear OS, both standalone.
Why We Don't
Our philosophy, in plain language.
A subscription is never the only way in. Every fonszi app can be owned outright - one payment, yours forever, every future update included. No forced renewals, no "trial expired" walls, no meter running while you sleep. If we ask for your money again, we earn it by shipping something new worth buying.
No sign-up to track your day, no data sold, ever. Our analytics are anonymous and aggregate: we see which features get used, never who used them. The free tier is ad-supported, that's the honest trade for free, and going Pro removes every ad on every screen. This site itself runs on Umami: cookieless, no personal data, no banner to click.
Your ski days and your workouts are yours. They are stored on your device and usable offline, and where you have an account they sync to it so they survive a reinstall and reach your other devices. We run our own backend for the essentials, your account and app updates, and we never hand your data to a third-party broker. You are never locked in: your recorded sessions stay on your phone whatever happens to us.
The server side is ours, end to end. Auth, licensing, the APIs your app talks to: we build and run them, not a rented stack of third-party SaaS. Fewer moving parts, no surprise data-sharing, and one team accountable when something breaks.
iOS (Swift & SwiftUI), Android (Kotlin & Compose), Apple Watch & Wear OS, and high-performance web - all sharing one Kotlin Multiplatform core. We specialize in cross-platform codebases where performance can't be compromised.