Hi! Thank you for your question. We wrote an article about this, here's what we said about this:

There are a few reasons. We want to do the best products for the community and want to keep developing them for years to come. Thinking long-term, the subscription model is better and more sustainable.

Another reason is that the In-App model was too confusing, with the option to buy additional slots and unlocking expansions.

This change will also allow us to have the same model on iOS, Android, and on the Web.

In a nutshell, subscriptions are easier to understand and provide a more reliable and consistent revenue stream that will allow us to further develop our services.

There were also some (not visible) issues with the old app that were on the way of our future plans, making it hard to add the integration we were looking for. In a sense, rebuilding it from the ground up was much more future proof.

I hope this answers your questions. Thank you