Anki is a good app, but only if you create your own cards. The act of creating cards is more important than the study.
The more I learn about learning languages the less I think an app is good. There are useful things they can do, but the problem is it is a lot of work to create great content and it is hard to get someone to pay
Pimsleur has an app. It's an incredible loss imo, gone are the days we could easily and safely permanently archive the mp3s to cloud drives "just in case". Now you'll have access to the expensive program for as long as you and Pimsleur have good luck.
Anki is a good app, but only if you create your own cards. The act of creating cards is more important than the study.
The more I learn about learning languages the less I think an app is good. There are useful things they can do, but the problem is it is a lot of work to create great content and it is hard to get someone to pay