Angry Math

Free for iPhone, iPad and iPhone Duo

True or false?
Beat the fuse.

A sum flashes up with an answer. Tap True or False before the fuse burns out. The better you play, the angrier Grump gets.

Download on theApp Store

Free. No ads. No account.

A run in progress: the sum 7 times 8 equals 54, three hearts, a lit fuse about half burnt and two keys, False and True

Built to make you tap fast

  • One endless run

    True or false, three lives, a life back every 15 in a row. It ramps up by itself, so there is nothing to set up.

  • Meet Grump

    The whole screen is a face. Every right answer winds it up: the colours heat from cold blue to boiling red and the brows drop.

  • The Daily 40

    The same 40 sums for everyone, once a day. Keep your streak and share your grid.

  • Game Center

    Leaderboards for your best endless run and for the Daily.

  • Feels right

    Adaptive sound and music that build with your streak, and haptics on every answer.

  • Fair and friendly

    No ads, no account, plays offline. A Relaxed timer gives you 60% more time.

See it heat up

  • Three Grump faces side by side: calm at streak 0, hot at 10 and in meltdown at 20

    The better you play, the angrier it gets

  • The wrong-answer screen: a cracked wrong number, the correct answer 115 and a smirking Grump

    Miss, and it smirks

  • The Daily result: 37 out of 40, a five day streak and the share card

    Same 40 for everyone

  • A run at streak 21: the screen is ember red, the fuse is short and sparks rise

    Meltdown

  • The Home screen with Grump furious and a big Play button

    Free, no ads

Four looks, four icons

Ember is free. A one-time Support purchase unlocks Dusk, Tide and Mono, each with a matching app icon. Nothing else is locked.

  • Ember icon, orangeEmber (free)
  • Dusk icon, purple and pinkDusk
  • Tide icon, deep tealTide
  • Mono icon, greyMono

Questions

How much time do I get per sum?

The fuse starts at under two seconds and shrinks to about one second as you go. Harder sums such as times tables and two-step problems get a small allowance. It never goes below one second.

How do lives work?

You have three. A wrong answer or a timeout costs one, and the run ends at zero. Every 15 right answers in a row wins one back, up to three.

What is the Daily 40?

The same 40 sums for everyone, one scored attempt per day (the day changes at midnight UTC). You get a daily streak and a share grid that does not spoil the answers. You can turn on a 9am reminder in Settings.

Do I need an account?

No. Everything works offline and signed out. Game Center sign-in is optional and only used for the leaderboards.

What is the Relaxed timer?

A setting that gives you 60% more time per sum. Relaxed runs are kept off the leaderboards.

What does the Support purchase do?

It is a one-time purchase that unlocks three extra looks (Dusk, Tide and Mono), each with a matching app icon. Ember, the original look, is free. Nothing else is locked and there are no ads. If you bought Pro in an earlier version, you keep it. Use Restore purchase in Settings on a new device.

Which devices does it run on?

iPhone, iPad and iPhone Duo.

More help on the support page.

One second. Tap.

Download on theApp Store