21Counts
Practice blackjack card counting with short lessons, drills and Bandit the raccoon.
01
Set your alignment line in a close golfer’s-eye view.
02
Hold to reveal the slope heatmap and moving break arrows.
03
Drag back and through impact. Speed and face path shape the putt.
04
Practice one included green, then unlock the full library with a one-time purchase.



Tap the character or press Enter to change the dance.
Made with curiosity
Games, useful tools and small ways to learn. Explore all 21 App Store apps.
Practice blackjack card counting with short lessons, drills and Bandit the raccoon.
Use your iPhone’s motion sensors to see the direction and intensity of a putting slope.
Explore Buddhist teachings through short lessons, stories, reflection and journaling.
Type to fight back in a noir manuscript-horror game where the next word keeps you alive.
Add a smooth ball-flight tracer to golf swing videos and export a clip to share.
A sword-duel murder mystery told through moving ink, timed parries and conflicting accounts.
Pilot an interceptor through eight three-phase arcade boss battles with reactive fluid effects.
A portrait bullet-hell boss rush built around readable patterns, close calls and quick retries.
A political strategy game about winning city districts, outsmarting rivals and running for mayor.
Send Morse code with sound or light, learn with Flint and practice the rhythm of dots and dashes.
Read, listen and explore ten illustrated bedtime tales with Thai and English narration.
An AI-driven narrative RPG that builds a personal cosmic-horror story in the 1920s.
Guide Pip through compact puzzle towers, where every swipe changes the room.
Pixelate faces in live recordings or existing videos, with processing on your device.
Keep an 18-hole scorecard for your group and calculate settlements after the round.
Read the green, align your putt and make a touch stroke in a golfer’s-eye putting challenge.
Turn Thai payment slips into searchable records for personal use or a shop team.
Turn the sky into a sci-fi viewfinder with live, on-device camera effects and video recording.
Match blocks, chain combos and unleash character abilities in a one-on-one puzzle battle.
Stack falling slabs through eight atmospheric layers. Every misalignment stays with you.
Build a frontier AI lab, hire researchers and ship products in a satirical management game.
Visit an app’s website to learn more, or open its App Store page to download.