Raivo was never free software anyway: https://github.com/raivo-otp/ios-application/blob/master/LICENSE.md

Modification, duplication, and (re)distribution of the Services in binary or published format (“Processed Format”) for any purposes and/or reasons is strictly prohibited without the explicit permission from Raivo OTP. Permission for modification, duplication, and (re)distribution of the “Service” in Processed Format can be requested via GitHub.