I built a mobile version of the numbers round from Countdown — Calculix is now on Google Play
If you've ever watched Countdown (or its international versions like Des chiffres et des lettres, Cifras y Letras, etc.), you know the numbers round — 6 numbers, 4 operations, reach the target. That's exactly what Calculix is.
I developed this as a hobby project with no prior mobile development experience. It took months of learning Flutter, Firebase, and Google Play deployment from scratch — and it's finally live.
What's in the game: 🎯 5 Questions mode — solve 5 problems as fast as you can ⏱ 5 Minutes mode — answer as many as possible in 5 minutes ⚡ Quick Rush — real-time 1v1 multiplayer 🔗 Private Match — challenge a friend with a 4-digit code 🏆 Global leaderboards
It's free, no ads, just pure mental arithmetic.
Would love feedback from fellow puzzle lovers — especially on difficulty balancing.
📲 Search "Calculix" on Google Play or download here: https://play.google.com/store/apps/details?id=com.muratyk.calcrush