OpSix

OpSix is the classic numbers game rebuilt for your thumb: combine six numbers with +, −, × and ÷ to reach the target — or get as close as you can before the clock runs out. Every day brings 15 fresh puzzles, and they are the same for every player on Earth.

What it does

• 15 daily puzzles: five easy, five medium, five hard — play in any order
• Tap-flow gameplay: every result becomes a new tile, chain your way to the target
• Closeness scores first; speed earns a bonus
• Daily and all-time Game Center leaderboards, plus streaks
• After each round: the best possible solution, step by step
• Free Play mode with three difficulties

Support

Questions, bugs or feature requests? Email ftorun@gmail.com and please mention your iOS version and the daily puzzle number ("OpSix #42") if it concerns a specific day.

Frequently asked

Is it really the same puzzles for everyone?
Yes. The daily puzzles are generated from the date itself, on your device. No download, no server — everyone sees the same 15 boards.

Do I need an account?
No. Leaderboards use Apple's Game Center, which is optional. The game is fully playable without signing into anything.

What data does OpSix collect?
None. The app has no servers and makes no network requests of its own.

What are the rules exactly?
Every intermediate result must be a positive whole number: division must be exact and subtraction can't go below one. Each tile — including results — can be used once.