Synesthesia Synth vs Microtonal Ear Trainer

Synthaestesia is a free experimental audio-visual instrument. Three capsules float in space. Every contraction produces sound. Move them, rotate them, reshape their pulse — and sculpt evolving spatial audio. Position changes tone. Rotation alters texture. Delay generates synchronized particles. This is not a game. It’s a spatial synth you can see.

Can you hear the difference between a note that's perfectly in tune and one that's just slightly off? Microtonal Ear Trainer builds the listening skills many musicians never develop. Designed by a musician, for musicians. This app focuses on one thing and does it well: training your ear to detect microtonal pitch differences that many people can't even hear yet. Each round plays two tones in sequence. Your job is simple: is the second note flat or sharp? The deviation is random, anywhere from a subtle 1 cent to a wide 100 cents, and the difficulty is yours to control. With consistent practice, you'll start hearing pitch inflections that used to be invisible to you. Whether you're a vocalist trying to lock into a chord, a guitarist chasing pure intonation, or a composer working with microtonality, this app trains the one skill no instrument lesson covers. FEATURES • Pure sine wave tones, no distractions, just the pitch relationship • Adjustable cent range, start wide and narrow it as you improve • Configurable note range, train across two octaves (C2-C6) • Adjustable timing, control tone duration, gap, and result display • 60-day progress chart, see your accuracy trend over time • Instant feedback, correct or wrong, and by exactly how many cents • Swipe or tap, answer flat or sharp your way HOW TO USE IT 1. Listen to the reference tone 2. Listen to the second tone 3. Answer: flat or sharp? 4. See the result and your running score Five minutes a day is enough to see real improvement within weeks. HONEST. SIMPLE. YOURS. • No ads, ever. Not now, not after you pay. • No data collected. We don't track you, analyze you, or store anything about you. What you do in this app stays on your device. • No b.s. subscription. Pay once, own it forever. • 30-minute free trial. Try the full app before spending a cent. No feature limits, no paywalled content during the trial. • One small purchase. A cheap, one-time unlock. That's the whole business model. WHO IS THIS FOR? • Musicians developing relative pitch and intonation awareness • Singers and string players working on pitch accuracy • Music producers and sound engineers training their critical listening • Music students supplementing ear training courses • Anyone curious about how well they can actually hear pitch Train your ears. Hear more.