Coco vs Complete Ear Trainer

Coco is an ear-training app for musicians, offering short listening exercises to develop recognition of notes, intervals, chords, scales, and pitch. Its seven games are Sonar, Triad, Climb, Fall, Ladder, Span, and Sound. Rules generate game levels that can introduce more answer options, chromatic notes, wider octave ranges, faster play, and greater difficulty as players advance.

The Daily Workout selects a personalized set of usually one to three games based on practice history and areas to improve. The Daily Challenge instead gives every player the same questions and time limits for the day, with one attempt. Coco is available on Android, iOS, and in a web browser. An account is needed to save progress and sync statistics across devices. Most listening runs locally after content loads, but an internet connection is needed to submit results, update the proficiency index, and retrieve daily content. Coco requires sound and does not currently support a hearing-impaired mode; headphones are recommended for chord and harmonic-interval games. The free plan has daily session limits. Coco Pro offers unlimited daily practice and full progression, with pricing shown in the app at purchase.

Complete Ear Trainer is an app for practicing relative pitch, aural skills, and music theory for activities such as improvisation, composition, singing, and playing in a band. Its material spans 11 drill types, including 24 intervals, 36 chord types, inversions, 28 scale types, melodic dictations, and chord progressions. Classic mode has 150+ progressive drills across four levels and 28 chapters; Easy mode has 50+ drills across 12 chapters and is designed for beginners. Chapters include theory cards, and the maker says staff-reading knowledge is not required. Users can create and save custom drills or training programs for friends and students; teachers can add weekly drills and view scores on private leaderboards. Audio includes five octaves of recorded grand piano and seven additional recorded sound banks. The app also has achievements, global leaderboards, and chapter progression. Mobile downloads are listed for several app stores; desktop and browser use is included in Complete Music Trainer. Free access covers the first chapter of each mode. The full version costs $6.99, paid once, with price variation possible by country, taxes, and store.