Archived App (Last seen on 9 Feb 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
Remember colors and tone sequences. Brain training.
What's New in Opa says
1.0.5
December 26, 2023
troubleshooting
