beatPi: draw your beats

In beatPi, the shape of your drawing is your rhythm.

A bar sweeps around a set of rings. Every dot you tap is a hit: when the bar reaches it, it sounds and lights up. Dots with the same sound join into shapes, so a triangle is three hits per turn, a square is four and a star is five. You see the music while you hear it.

HOW IT WORKS
• Pick a sound and tap a ring to add a dot. Tap it again to remove it, or drag it somewhere else or onto another ring.
• Add up to five rings and layer a different rhythm on each one.
• Use the snap grid to keep everything in time, or place dots freely.
• Drop whole shapes in one tap: lines, triangles, squares, pentagons, hexagons and octagons.
• Set the tempo from 60 to 180 BPM. One turn is one bar of four beats.
• Save your beats with any name and come back to them later.

PLAY MELODIES
Sounds with notes (basses, pianos, guitars, voices…) have 8 notes each. Pick the note before you add a dot, or long-press a dot to change it. Notes follow the pack's scale, so any melody fits.

SHARE YOUR BEATS
• As a link: anyone with beatPi opens it right on the board, and anyone else sees the drawing in their browser.
• As audio: 4 turns of the beat to listen to on any phone or computer.
• As a vertical video of the spinning board, ready for Stories, Reels, TikTok and Shorts.

8 SOUND PACKS
Switch packs and your beat keeps its shape: same drawing, new style.
• Basic (free): kick, snare, hi-hat, claps, tom and bass.
• Electronic: 909 kick, metallic hats and a rave stab.
• Voices: beatbox and sung vowels.
• Classical: double bass, piano, pizzicato, harp, violins and flute, in G major.
• Rock: acoustic drums and two distorted guitars.
• Spanish guitar: rasgueado, body knocks, palmas and flamenco chords.
• Latin: tumba, timbales, clave, bongo, shaker and güiro.
• Urban: trap and reggaeton with a booming 808.

Packs with notes are tuned to a single key and their chords belong to that key, so any drawing sounds right.

NO ADS, NO DATA COLLECTION
beatPi has no ads, needs no account and collects no personal data. Your beats stay on your phone unless you share them. The Basic pack is free, and each extra pack is a one-time purchase that is yours forever, or get every pack at once with All packs.