How Stelline came to Android with its puzzle engine written in Swift: why a Kotlin port was out, what the Swift SDK for Android cost, how parity holds.
One Swift engine, two phones — Andelis Studio Skip to content Andelis Studio Games Contact Notes · Engineering One Swift engine, two phones: how Stelline came to Android Andelis Studio · 3 October 2026 · about 5 minutes Stelline is a Star Battle-style logic puzzle: place one queen (or two stars) in every row, column and coloured region, never two touching. What makes it different from a puzzle book is that every board is made on the phone, and every board is proven, by an exact solver, to have exactly one solution. The same engine grades each board with a seventeen-technique deduction ladder,
How Stelline came to Android with its puzzle engine written in Swift: why a Kotlin port was out, what the Swift SDK for Android cost, how parity holds.
One Swift engine, two phones — Andelis Studio Skip to content Andelis Studio Games Contact Notes · Engineering One Swift engine, two phones: how Stelline came to Android Andelis Studio · 3 October 2026 · about 5 minutes Stelline is a Star Battle-style logic puzzle: place one queen (or two stars) in every row, column and coloured region, never two touching. What makes it different from a puzzle book is that every board is made on the phone, and every board is proven, by an exact solver, to have exactly one solution. The same engine grades each board with a seventeen-technique deduction ladder,
