Crossmath
Equations cross like a crossword. Every number you place has to balance two sums at once.
- 120 handcrafted puzzles
- Beginner to Expert tiers
- Hints, undo and redo
Free · Offline · 29 languagesFree · Plays offline · 29 languagesCrack the numbers.
Crack the numbers.
Beat the world.
Three math puzzle games, eight daily challenges and a global leaderboard.
Three addictive math puzzle games, eight fresh challenges every day, and a global leaderboard to prove you're the sharpest mind in the room.
No sign-up needed — play as a guest.No sign-up needed — play as a guest and save later.
3 game modes
8 daily challenges
29 languages
100% offline play
Three ways to crack the vault
Logic, pattern-spotting and pure speed.Logic, pattern-spotting and pure speed. Switch modes whenever your brain wants something different.
Tens
Link neighbouring numbers that add up to exactly 10 and watch the board clear.
- 6×6, 8×8 and 10×10 boards
- Every board is solvable
- Calm, no-timer play
Speed Quiz
Rapid-fire mental arithmetic against the clock. Keep the streak alive for ×3 points.
- 100 levels in 10 chapters
- + − × ÷ up to 1,000
- Streak and speed bonuses
DAILY HEISTEight new vaults.
Eight new vaults.
Every single day.
Fresh challenges reset at midnight, your time. Crack all 8 for bonus XP and keep your streak burning.
Fresh challenges across all three modes reset every midnight, your time. Crack them all for bonus XP — and keep your streak burning.
- Daily streaks with reminders you control
- Earn XP, level up, unlock achievements
TODAYResets in 06:12:40
3 of 8 vaults crackedFinish all 8 → +250 XP bonus
GLOBAL LEADERBOARD
See exactly where you stand.
Worldwide, your country or just friends — today, this week and all-time.
Compare your score with players worldwide, in your country, or just your friends. Boards run today, this week and all-time, so there's always a race you can win.
Every score is checked on our servers before it's ranked.Fair play built in — every score is checked on our servers before it's ranked.
GlobalCountryFriends
- NumNinjaJapan48,210
- LunaCalcBrazil46,980
- Pi_RateUSA45,115
- MathMaverickIndia43,870
#1,284You▲ 56 today
Numbers are universal.
Now the menus are too.
29 languages, including right-to-left Arabic.Play in 29 languages, with right-to-left support for Arabic. Switch any time from settings.
Englishहिन्दीEspañolPortuguêsFrançaisDeutschالعربية日本語한국어नेपालीবাংলাதமிழ்Bahasa IndonesiaTürkçeРусскийItalianoTiếng Việtไทย+11 more
Start as a guest.
Save when ready.Save when you're ready.
- Play as guestNo sign-up, no email. Open the app and crack your first vault in seconds.
- Link when readyConnect Google, Apple or Facebook. Your streak, XP and puzzles move with you.
- Get rankedYour scores join the global, country and friends leaderboards.
Questions,
cracked.
Is Numvault free?
Yes. Every game mode is free to play.
Do I need an account?
No. Tap "Play as guest" and start instantly. Sign in with Google, Apple or Facebook any time to save your progress and join the global leaderboard — your guest progress comes with you.
Does it work offline?
Yes. All three modes play without internet. Scores sync to the leaderboard next time you're online.
Who is it for?
Anyone from age 7 up. Difficulty tiers take you from warm-up sums to expert-level Crossmath.
Which languages are supported?
29 languages at launch, including Hindi, Spanish, Arabic, Japanese and Nepali. Numbers are universal — the menus speak your language.
Your first vault is waiting.
Free. Offline. Ten seconds to start.Free to download. Plays offline. Takes ten seconds to start.
Download Numvault — free