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.