Ten questions. Beat the clock.
Think-Fast Math is a mental math game for iPhone. Each level is ten questions against a shrinking clock, from simple sums to squares, multiples and high/low grids. No ads, no account.
At a glance
- Devices
- iPhone
- Requires
- iOS 18 or later
- Price
- Free download · Lifetime Access $9.99 · One-time purchase · No subscriptionUS App Store price, checked October 11, 2026 · Family Sharing included
- Free version
- Every level and question type, with up to 6 retry lives that refill one an hour
- Languages
- 44
- Your data
- Progress, lives and stats stay on this iPhone, with no account. Optional feedback sends the name, email and message you enter to Daniel’s feedback service.
- Version
- 26.0.2 · updated
Start simple. Grow into it.
Eight kinds of question, in the game’s own words, each with the level where it first appears.
- Addition 8 + 5? Level 1
- Subtraction 9 − 3? Level 1
- Multiplication 7 × 11? Level 4
- Multiples Multiple of 12? Level 4
- Division 132 ÷ 12? Level 5
- High/low grids Highest? Level 6
- Squares 9²? Level 7
- How many fit How many 11s fit in 121? Level 8
- The clock
- Every question has its own clock, and each answer shortens the next one. Level 1 opens at 12 seconds and closes near 11; level 15 opens at 5 and closes at 2.4.
- The levels
- Ten questions clear a level and unlock the next. Levels 1–15 are written by hand: five answers in a column for levels 1–3, then a 2×2 grid, a 3×2 grid and, from level 9, a 3×3 grid of nine. After that, generated levels keep widening the numbers, down to a four-second opening clock.
- Lives
- Miss a question or run out of time, and you choose: spend a life to try that question again, or restart the level for free. You hold up to six lives, and one comes back every hour. With none left, a new level won’t open until one returns, but the last two levels you cleared stay on the Level Journey to replay.
The same ladder in the app
No ads. No account. Just numbers.
Practice whenever you have a minute, even offline. Your progress, lives and stats stay on your iPhone, with no tracking.
Every level and every kind of question is free. After a miss, the game offers one life to try again, or a free restart of the level.
Questions
Is Think-Fast Math suitable for children?
It’s rated 4+ on the App Store. There are no ads, accounts, chat, multiplayer or leaderboards, and levels 1–3 use numbers up to 9. Progress is one ladder per iPhone, with no profiles, so a child and an adult on the same phone share a level. A parent should approve purchases and send any feedback for a child under 13.
Can I turn the clock off?
No. Every question is timed; the clock is the game. Level 1 starts at 12 seconds a question, and a miss costs a life or a free restart, never the levels you’ve unlocked. Your results aren’t ranked or shared. If timed practice isn’t what you want, this isn’t the right game.
How long does a level take?
A minute or two. A level is ten questions, each on its own clock: up to 12 seconds at level 1, 5 at level 15 and 4 in the generated levels beyond. Short sessions are the point.
Does it work offline?
Yes. Levels, lives and stats all work without a connection. Buying or restoring Lifetime Access, and sending feedback, need the internet.
What happens when I get one wrong?
The game says “Almost!” and gives you a choice: spend a life to try that question again, or restart the level for free. You hold up to six lives, and one comes back every hour. With no lives left, a new level won’t open until one returns, but the last two levels you cleared stay on the Level Journey to replay. Lifetime Access removes the limit.
Does it practice times tables?
Multiplication arrives at level 4 and division at level 5, mixed with the other kinds of question. Level 15 reaches 15 × 15, and the generated levels keep widening the range. You can’t pick a single table, or a single operation, to drill.
What do the stats show?
With Lifetime Access: games played, accuracy, questions answered, a streak of days in a row, average response time, your fastest level and your completion rate, with charts of activity over the last 12 weeks, questions, speed, accuracy and question types. They are kept on your iPhone and never uploaded.
Does the game adapt to me?
No. Levels 1–15 are written by hand and later levels follow fixed rules, so everyone climbs the same ladder. Nothing is personalized from an online profile.
Pairs well with
Words instead of numbers: find the shorter words inside a six-letter word, with no clock.
A sliding-tile puzzle for iPhone and iPad that counts moves, not seconds, for days you want no timer.
Availability
Free to play with retry lives that refill over time. Lifetime Access adds unlimited lives and private on-device stats: activity, speed, accuracy, streaks and question‑type breakdowns.
- Devices
- iPhone
- Download
- Free to download
- Purchase options
- Lifetime Access · One-time purchase · No subscription
Prices vary by country; the App Store shows your local price.
Think-Fast Math support and purchase help
Designed and built by Daniel, an independent Apple developer. Every release is listed in the changelog.