This website already describes OptionsApp 2.0, release on 08.10.2026. Until then, the download offers version 1.10. Stocks, ETFs and some new features are only available from the release onwards.
OptionsApp

Withdraw from contract

Use this form to withdraw from an OptionsApp subscription within the 14-day withdrawal period. To simply end a subscription, cancel it in the user portal under “Abonnement ändern”. The withdrawal policy (in German) is at the end of the terms and conditions.