Stop tapping. Sing the answer.
Recognising an interval and being able to produce one are different skills, and only one of them is trained by tapping a button. Open Mic listens through your microphone and grades what you sing - or play - note by note, live.
14-day PRO free trial. No charge until trial ends. Cancel anytime.
A gamified ear training app, built by a professional jazz pianist
Earonman trains your ear from your first interval up to advanced jazz harmony. Real grand piano sound, structured curriculum, no ads. Web in any browser, native iOS, Android landing soon. Free to start, no card required.
The feature,
explained clearly
Open Mic is a PRO answer mode in the Earonman mobile app. Instead of choosing an answer from a list, you sing it. The app hears your voice, tracks the pitch in real time and tells you not just whether you were right, but how close to the centre of the note you landed. Everything happens on your phone - the audio is analysed on the device and never leaves it.
Answer by singing, not tapping
The app plays a starting note and names an interval; you sing the target note. Turning recognition into production is the difference between knowing what a major third sounds like and actually having one in your head.
Live intonation feedback
A pitch lane shows what you are singing against the note you are aiming for, with tolerance bands. You see the moment you drift sharp or flat, and how long you have held the note steady.
Your instrument works too
The detector cares about pitch, not about what produced it. Answer on piano, saxophone, trumpet or guitar and it works the same way. One note at a time - it is a monophonic detector, so chords are out.
Sing in your own octave
Scoring is octave-equivalent, so a bass can answer a question written high and a soprano can answer one written low. The octave you actually sang is always shown, never quietly ignored.
Three steps.
Repeated until it sticks.
Open Mic is a switch, not a separate course. Turn it on and the exercises you already know start asking you to sing.
Find your voice, once
On the first run you hum one comfortable note. Questions are then built around your register, so you are never asked to reach for something absurd. Humming quietly counts - you do not have to belt.
Listen, then answer
The app plays the prompt and goes quiet before the microphone opens, so it never mistakes its own speaker for your voice. No headphones required.
Hold the note
Sing and hold steady for about a second. Vibrato is fine - the detector judges the centre of the note, not every wobble. A breath in the middle will not lose your answer.
See where you landed
You get the verdict plus the note you sang and how many cents off it was. Got it wrong? Sing it again on the same question, or compare your note against the root and the target.
Skills you walk away with
Singing an interval forces a skill that multiple choice can never test: hearing the note before it exists.
Audiation - hearing before sounding
To sing a minor sixth up from a played note you have to hear it internally first. That inner ear is what sight-singing, improvising and transcribing all run on.
Accurate intonation
Cents feedback turns "roughly right" into something measurable. Most people discover they consistently sing certain intervals slightly flat, and can then fix it.
Guide tones you can actually sing
In Guido, Open Mic lets you sing the 3rd or 7th of a chord instead of finding it on a keyboard - the way jazz musicians internalise changes.
Transposing by ear
Practice mode has a Transpose drill: you hear an interval, get a different starting note, and sing the same interval from there. It only works if you truly know the interval rather than echoing a pitch.
Daily reps.
Compound results.
Ten minutes of singing answers is worth more than an hour of tapping them, because you cannot guess your way through it.
No lucky guesses
A four-option question can be guessed a quarter of the time. There is no guessing a sung note - either you can produce it or you cannot.
Immediate correction
Hearing yourself land 30 cents flat and fixing it on the next try is a much tighter feedback loop than being told "wrong" after a tap.
It carries into playing
Singers, wind players and improvisers all rely on pitching a note before producing it. This is that skill, drilled directly.
Not just jazz musicians
Anyone who has to produce pitch rather than just recognise it - which is most musicians.
Singers and choir members
Sight-singing means producing the right note from an interval, not picking it from a menu. This drills exactly that.
Wind and brass players
Play the answer on your horn. Intonation feedback in cents is useful practice on its own, quite apart from the ear training.
Jazz musicians
Sing the guide tones over changes in Guido. If you can sing the 3rd and 7th, you can hear the progression.
Anyone stuck on recognition
If interval quizzes have become easy but transcribing still feels hard, the missing half is production. Start here.
Free forever.
PRO when you want more.
Real free tier, not a trial. Practice Mode is open to everyone with a usable foundation library across Intervals, Chords, Scales, and Jazz Voicings - no daily cooldown.
Built so any serious musician can train their ears forever, free.
- Basic intervals, triads & major/minor scales
- Jazz Voicings game mode
- Practice Mode: free training for core intervals, triads, 7ths, major scale modes and basic jazz voicings
- 3 exercises per 8-hour window
- Basic stats and achievement badges
Or €59.99/year (~€5/mo, save 28%)
- Unlimited exercises (no cooldown)
- All intervals, chord types and scales (incl. 7ths, altered, modes)
- 6 advanced quest modes: Slashmaster, Functioneer, Harmonic Quest, Guido, Hybrid Lab, Polychordist
- Open Mic: answer by singing or playing into your microphone (mobile app)
- Practice Mode: full library of intervals, chord types, scales and voicing categories
- Advanced stats: per-quest-type analytics & session breakdowns
- Weekly Leagues with full history
- Full achievement & badge system
- All 8 instrument sounds (Rhodes, strings, harp, e-guitar, flute, clarinet, French horn)
- Priority support
Cancel anytime. No charge during PRO trial. Card only required at trial start.
What makes this
different
On-device, private by design
The audio is analysed on your phone and never uploaded, stored or recorded to a file. The microphone is only open while a question is waiting for your answer.
Built into the exercises you already do
Open Mic is not a separate app or a separate curriculum. It is a switch on the interval levels, on Guido and in Practice - same levels, same progress, different way to answer.
Accessible by design
Blind users get spoken directional coaching while holding a wrong note - a little higher, a little lower - which as far as we know no other ear training app offers.