Coming Summer 2026 for iPhone and Android

Cosmos 100
Tonal Intervals

Bilingual in English and Spanish

A premier app for complete beginners. No previous music training experience necessary.

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Cosmos 101
Melodic Interval Recognition

Bilingual in English and Spanish

A premier app for beginners and experts. No previous music training experience necessary.

But if you are already an experienced musician, you will also have a fun, challenging experience!

App screenshot 1 App screenshot 2 App screenshot 3