spool. vs BeatGlow

Make a whole song on your phone. Spool is a pocket music studio inspired by the joy of hardware grooveboxes — play, sample, sequence, and record to tape, all in one playful instrument. Fourteen sound engines. From punchy FM and fat subtractive Pulse to shimmering Cluster, plucked String, granular Cloud, the TALK vocoder, the WIDE stereo engine, THUMP bass, a Sampler, and two drum machines — each with its own animated, touchable visualizer and four hands-on controls. Sample anything. Record straight from the mic into the sampler or drum kits, trim it, and play it across the keyboard. Drums & beats. Build kits, chop a sample into a playable kit, and lock in grooves with the step sequencer. Playful sequencers. Pattern and arpeggiator to start; unlock Stream, Taps, and the bouncing-ball Gumball machine for happy accidents. Six minutes of 4-track tape. Record, overdub, varispeed (including reverse), scrub, and bounce your jam to a finished mixdown — export to WAV. Your tape is saved with your project. Effects & mixer. A deep rack — delay, spring reverb, drive, compressor, chorus, multimode filter, phaser, tremolo/auto-pan, beat-repeat stutter, and a pitch-shifter/harmonizer — many tempo-syncable. Plus a master EQ and brickwall limiter so it always sounds finished. Plays with your gear. Connect a USB or Bluetooth MIDI controller and play Spool like hardware. AUv3 plugin support is planned for a future update. Free to download and make music with a starter set of engines and sequencers. A single one-time Spool Pro purchase unlocks the full instrument — all engines, sampling, every effect and sequencer, unlimited projects, export, and MIDI. No subscription. Spool is an original, independent work by a solo developer — affiliated with no hardware maker.

BeatGlow is a drum machine that glows in the dark. Tap out a beat on a 7-track, 32-step grid and hear it instantly. Every kick, snare, hi-hat, clap and FX hit is synthesized on the fly — there are no samples to download, and nothing is baked in. That means you can reach into any drum and reshape it: raise the pitch, stretch or choke the decay, brighten or darken the tone. The waveform changes, not a filter on top of it. MAKE A BEAT • 7 tracks x 32 steps — kick, snare, hi-hat, clap, plus three FX voices • Tap a pad to place a hit; long-press to accent it for real dynamics • Tempo from 60 to 180 BPM, with tap tempo if you'd rather feel it out • MPC-style swing, from dead straight to a heavy triplet shuffle • Per-track volume and mute in the mixer SHAPE THE SOUND • Pitch, decay and tone dials for every track, with instant preview • Because the sounds are generated, not sampled, edits are unlimited • One tap returns any drum to its original voice BUILD A SONG • Chain patterns into an arrangement, each section repeating as you like • Reorder sections by dragging; playback runs the whole song gaplessly • Keep as many patterns as you want, named and organized SHARE IT • Export a pattern or your complete song as a WAV file • Export a pattern or complete song as a vertical video, ready for social • Send a single pattern or your entire library to another BeatGlow user — they open the file and it imports NEED A STARTING POINT? Describe a style — "laid-back boom bap", "minimal techno", "halftime trap" — and BeatGlow will generate a pattern for you to take apart and rebuild. No account, no API key, no setup. NO NONSENSE No accounts. No sign-in. No ads. No tracking. No subscription. Your beats are saved on your device as you work, and they stay there. MAKE IT YOURS Choose from five visual themes, including Velvet Bloom. Every theme, song mode, sound design, AI generation, WAV export and branded video export remains free. The optional BeatGlow Pro one-time purchase removes the BeatGlow title and footer from pattern and full-song video exports. No subscription. Restore Purchases is available from the question-mark menu > BeatGlow Pro & Purchases.