BEEP BOOP App Store
A line drawing of the Beep Boop panel, made part by part at the app's own measurements: a step key, the voice dial, a silicone pad, the window, the whole panel on an iPhone, then the same parts on an iPad.

Beep Boop. A step sequencer for iPhone and iPad.

Press play. A beat is already there.

    An exploded view of a touch: the glass, the panel, the engine and the speaker, drawn apart along the one line a touch travels.
    FIG. 8

    From finger to ear

    A touch passes the glass, the panel, the engine and the speaker. It sounds at the next buffer.

    A ruler from step 5 to step 6 at 120 beats a minute: 6,000 samples. A tap arrives between them and sounds at the start of the next buffer.
    DETAIL A

    One step at 120 BPM

    6,000 samples from step to step, 48,000 a second. Counted, never timed.

    FIG. 9

    Preview

    27.9 seconds on iPhone. Real touches, the engine's own sound.
    FIG. 10

    Press kit

    The panel's parts, photographed from the app and set along one centre line: 1 the window, 2 the voice dial, 3 the step keys, 4 PLAY.
    The parts, captured from the app at true size, then pulled apart along one line.
    Name
    Beep Boop: Beat Maker
    For
    iPhone and iPad, iOS 17 or later
    Price
    Free to play and share. To keep your work: $14.99 a month after a free week, or $67.99 once.
    Contact
    Support page

    Downloads