FIF
One swipe.
Android, iPhone and iPad.
Free, with ads.
Cut every shape exactly in half.
No account.
No in-app purchases.
Swipe
once.
- 1A shape appears.
- 2Swipe once, in a straight line, through it.
- 3It splits in two. Each half shows its share of the area.
Your turn. Swipe across the seam.
Aim for
50.0/50.0
- Error
- 0.0
- Points
- 0
- Streak
- 0
The dashed line is the exact half at your angle. It exists at every angle. The game finds it by binary search.
Error is 50 minus the smaller side. Keep it inside the round's tolerance, or lose a heart.
Grades
The seam is 50.0. Bars show how far a cut may land from it. A 49.6 / 50.4 cut is off by 0.4.
Points
10 to 100 points by accuracy, plus 50 for a PERFECT. A streak of GREAT or better multiplies them.
From round 3, about 1 round in 12 is gold. Tolerance shrinks every round. In Butter and Daily, 5 PERFECT cuts in a row heal one heart.
Butter
Chill and endless.
Where everyone starts. Each round gets a little tighter, for as long as your hearts last.
- Hearts
- 3
- StartRound 1 is a tutorial square.
- HealEvery 5 PERFECT cuts in a row heal one heart.
- TwistsUnlock by round, then stay.
- Tolerance
- 12to3
Daily Cut
Same seed for everyone.
One new run each day. Resets at 07:00 UTC. Keep a daily streak and share your grid.
- Hearts per try
- 3
- Tries3 a day, plus 1 more for watching an ad.
- HealEvery 5 PERFECT cuts in a row heal one heart.
- FuseOn every round from 10.
- Tolerance
- 8to2.5
Surgeon
Scores x3.
Unlocks when you reach round 20 in Butter. One heart. No guide line, and a fuse on every cut.
- Hearts
- 1
- AlwaysFuse and Blind on every round.
- StackTwo twists can stack from round 8.
- ScoreEvery cut counts x3.
- Tolerance
- 9to1.5
Nine twists
- 01SPINIt turns while you aim.
- 02DRIFTIt slides side to side.
- 03BREATHEIt grows and shrinks.
- 04HOLLOWHoles don't count.
- 05TWINSTwo shapes, one cut.
- 06FOGCut it from memory.
- 07FUSECut before time runs out.
- 08BLINDNo guide line.
- 09MIRRORYour swipe is flipped.
It turns while you aim.
Butter round 6 ยท Daily 3 ยท Surgeon 1
Every shape
Simple
Food
Icons
Silhouettes
Hollow
Odd
Letters and digits
142
shapes in layers: simple, food, icons, silhouettes, hollow ones with holes, odd ones, and the letters A to Z and digits 0 to 9, drawn from Nunito Black.
Every shape passes a validator: simple rings, no crossings, holes inside, thick enough to cut.
+8
procedural families make new shapes every run. Each one opens at its round.
Daily Cut
#142
- Next cut in
- 00:00:00 Resets at 07:00 UTC
- Tries
- 3 + 1 3 a day, plus 1 for watching an ad
Share
- PERFECT
- GREAT
- GOOD
- MISS
Two lines, Wordle style. One square per cut, up to 20, then +N. Same shapes for everyone, so grids compare.
No
account.
Everything saves on your phone. No sign-up, no FIFTY account, no server.
Cloud save
Signed in to Google Play Games on Android or Game Center on iPhone and iPad, your progress is also kept as a cloud save. Switch phones and it merges.
Leaderboards
- ButterPlay Games, Game Center
- SurgeonPlay Games, Game Center
- Daily CutResets daily
- Closest Cut50.000
Closest Cut keeps your best single cut.
Never
- during a cut
- in your first 90 seconds
- before your 3rd run of your first session
- right after a new best
- within 60 s of a rewarded ad
- a banner during play
Only when
- between runs, at least 2 runs and 150 seconds apart
- a small banner, on menus only
- you pick a rewarded ad, always optional
- +1heart to revive. Once per run, from round 5.
- 30minutes with no ads.
- +1Daily Cut try.
Google's consent screen in Europe and the UK. On iOS, the system asks before tracking.
Sound and
haptics
Every cut has its own sound and haptic. Music changes with each mode. Tap a row to hear it.
Settings
- Sound
- Music
- Haptics
- Reduced motion
60 fps CustomPainter rendering. Halves fly apart with particles. After a miss, a ghost shows the perfect line. These four switches work on this page too.
How close




FIFTY by Syntax Lab Technology
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