Number Series Mind puzzles for every mood
Crack number patterns, guess the daily equation, race the clock or just unwind. Thirteen game modes, five Quick Dailies, 18 brain-training mini-games and an IQ Test — in one app for Android. Free to play, with no ads.
A workout for your brain
A minute on the bus. An hour on the sofa.
Every mode is tagged by mood — Relaxed, Focused or Intense — and by length, so you can find the right puzzle for right now. Filter the Play tab, star your favourites, and jump straight back into whatever you played last.
More on YouTube: the full app tour and every Number Series video.
Quick Dailies
Five fresh puzzles, every single day
Everyone gets the same puzzle each day, each one keeps its own streak, and you can share your result or challenge a friend to beat it. How each one works.
Equatle
Guess the hidden equation
Wordle, but the word is a true equation like 9*8=72. Six symbols, five tries, green and amber tiles.
Target
Six numbers. One target. 60 seconds.
Combine tiles with + − × ÷ to hit the number exactly — or get within 10 to keep your streak.
Sequence Set
Find the triples that share a rule
Twelve numbers hide four groups of three: +7 each, all squares, all primes, a Fibonacci run…
Symbol Sums
Three shapes, three equations
Each shape hides a number. Work out all of them from the equations — lower time wins.
Daily Estimate
One guess. See the crowd.
One question nobody knows offhand. Lock in a single estimate and see how close you got.
Classic
Crack the pattern. Collect the hidden word.
Find the missing number or tap the one that doesn’t belong, level after level. You have three lives, and clue letters turn up along the way — unscramble them in the final word challenge.
How Classic worksBrain Training
Four quick workouts a day, picked from 18 mini-games
Memory, speed, attention and logic — Speed Solve, N-Back, FizzBuzz Reflex, Soroban, Bulls & Cows and more. Difficulty adapts to how you did, and you can pick your own daily four.
All 18 mini-games explainedKakuro
A number crossword, fresh every morning
Fill the white cells with 1–9 so every run hits its sum, with no repeats. Pencil marks, undo, and a free smart hint when you’re stuck. Practice grids go up to 9×9.
How to solve KakuroNumber Cascade
Drop, merge, chain
Tiles fall on a clock. Drop them into columns so equal numbers merge into their sum — and chain reactions cascade for big combos. One daily goal, plus Chill, Normal and Turbo practice.
Cascade tips
IQ Test
See how your brain performs
Fifteen, 25 or 50 timed questions across five abilities — pattern recognition, logical reasoning, working memory, processing speed and numerical reasoning — with a score and a category breakdown.
About the IQ Test
Your progress
Watch your cognitive profile grow
Every game feeds a radar chart of five abilities, earns XP towards six ranks from Curious Mind to Genius, and unlocks trophies and avatars along the way.
Ranks, trophies and avatarsEvery way to play
Thirteen game modes
Plus the five Quick Dailies above. Tap any mode for its rules in the guide.
Make it yours
Five colour themes, light or dark
Amber, Midnight and Sage, plus Obsidian and Rose Quartz with Premium. Follow your system’s dark mode or choose it yourself — and on Android 12+ you can use your wallpaper colours instead.
The little things
Hints that teach
A free nudge first, then an explanation of the rule behind the answer — so you learn the pattern, not just the number.
Streaks with a safety net
Daily streaks for every daily mode, and a streak freeze each month that covers a missed day automatically.
Play with friends
Add friends by username or link, challenge them to duels and daily results, and keep shared streaks going.
Progress that follows you
Sign in with Google and your progress backs up to your account. Everything else works without one.
12 languages
English, German, Spanish, French, Hindi, Indonesian, Japanese, Korean, Portuguese, Romanian, Turkish and Chinese.
Free, with no ads
All 13 modes, the Quick Dailies and every mini-game are free to play, with no ads. An optional Premium subscription adds extras on top.
Learn every game
The Number Series help guide
How to get around the app and how to play every mode, daily and mini-game — in plain words, page by page.
Give your brain its daily workout
Free to play, no ads. Five new dailies every morning, thirteen modes whenever you want more — and an optional Premium for extras.