ZingUp

We create apps that are fun to play.

Meet our apps Get in touch
About the studio

Small games. Big grins.

ZingUp is a mobile app studio. We create apps that are fun to play: quick to pick up, fair to everyone, and satisfying every time you come back.

Play in seconds

No sign-up walls. Open the app, pick a nickname and you're playing.

Short rounds

A round fits into a spare minute, so there's always time for one more.

Beat your best

The real opponent is yesterday's you. Personal bests, streaks and badges keep it going.

Fair and friendly

Mistakes are part of the fun, not a penalty. Scores are checked so leaderboards stay honest.

Our apps

Meet Sumzoo

Our first app turns mental maths into a race against the clock.

Sumzoo app icon

Sumzoo

Get faster at maths, one challenge at a time.

Sumzoo is a quick-fire maths game for iPhone. Answer 10 or 20 questions as fast as you can, from simple addition to the 12 times table, and try to beat your best time. A wrong answer just gives a little shake, so you try again with no penalty.

Who it's for: anyone who wants quicker mental maths, from children learning their times tables to grown-ups keeping their brain sharp.
Coming soon to theApp Store Launching soon

Key features

  • 7 challengesAddition to 10 and 20, subtraction, times tables up to 12 × 12, and a mixed round.
  • Timed rounds, no penalties10 or 20 questions with four choices each. Wrong answers shake; you just try again.
  • Daily, weekly and monthly leaderboardsEvery score is checked on our server, so the boards stay fair.
  • Streaks, frames and 19 badgesPlay every day to grow your streak and unlock rewards to show off.
  • No account neededJust pick a nickname. No email, no real name, no sign-up.
Sumzoo welcome screen: get faster at maths, one challenge at a time, then choose a nickname
Pick a name and go
Sumzoo home screen with the leaderboard card, a daily streak and the list of challenges
Choose a challenge
A Sumzoo question, 11 times 7, with four answer choices and a timer
Race the clock
Sumzoo results: three stars, a new personal best and first place on today's leaderboard
Beat your best
Sumzoo player page showing streaks, frames to earn and badges
Earn frames and badges
Contact

Say hello

Questions, feedback, ideas for Sumzoo, or something else entirely? We'd love to hear from you.