AudioEngineer EAR Trainer

AudioEngineer Ear Trainer is an ear-training app for audio engineers and musicians. Train your sense of frequency, your ear for noise, and your ear for effects — in two modes, Quiz (guess the answer) and Listen (free, unscored). No login, no ads, no tracking, and it works completely offline.

■ Frequency Ear Training

Free · 10-band EQ boost/cut training with pink noise · Boost-only, cut-only, and mixed (guess the direction too) practice modes · Best-streak tracking

Unlock Pro (one-time purchase) · 31-band 1/3-octave precision training (ISO 266 standard) · 12dB, 6dB, and 3dB boost/cut magnitude selection (mixed magnitude too) · Sine-wave-only listening mode · Left/right ear training — a different band is boosted or cut in each ear, and you identify both independently · Train with your own imported music

■ Noise Ear Training

Free · Identify noise types (hiss, rumble, crackle, and more)

Unlock Pro (one-time purchase) · More noise types added · Identify hum frequency (50Hz vs. 60Hz) · Noise floor detection — tell whether noise is present, and guess its level (-60/-50/-40dB) · All of the above support your own music as the background

■ Effects Ear Training

Free · Identify 3 effect types — Reverb, Delay, Chorus

Unlock Pro (one-time purchase) · 4 more effect types — Flanger, Phaser, Tremolo, Distortion (7 total) · A/B effect-intensity comparison (which is stronger?) · Import your own music to hear how each effect sounds on a real track

■ Mock Exam · A 10-question exam to check everything you've trained, all at once (Basic free / Pro version) · S–D grades and per-category accuracy to find your weak spots, with best-score tracking

Available in Korean, English, Japanese, Spanish, and Simplified Chinese. Runs on iPhone, iPad, Mac, and Apple Vision Pro.