spool. vs Aether Learn

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.

Aether Learn teaches you how sound and synthesizers actually work, one hands-on lesson at a time. No jargon, no prerequisites. Every concept comes with a real synth engine you play with your finger, so you hear the idea the moment you read it. Start from the very beginning: what sound is, how frequency becomes pitch, and why a wave's shape decides its character. Then build up through the tools real producers use every day. WHAT YOU LEARN - Sound and frequency: vibration, pitch, amplitude, and the difference between loudness you measure and loudness you hear - Waveforms and harmonics: watch a bright wave get built from pure sine waves, one at a time, until it forms a full saw - Subtractive synthesis: shape tone with a low-pass filter, resonance, and the classic filter sweep - Envelopes: attack, hold, decay, sustain, release, and delay, shaping how a note lives over time - Modulation: LFOs, vibrato, tremolo, and the rhythmic filter wobble at the heart of bass music HOW IT WORKS Each lesson has three steps. Learn the idea in plain language, watch a short demo that moves the controls for you, then play with a real, audio-reactive instrument built into the app. You see the waveform, the harmonics, the filter curve, and the envelope respond in real time as you turn the knobs. Built for curiosity. Whether you have never touched a synth or you want to finally understand the gear you already own, Aether Learn gets you from zero to making sounds you understand. Best suited for absolute beginners who want solid foundations to carry into any DAW or software synthesizer when they start producing music.