This app is in continual development, and the developer is very responsive to customer input.

Mental Case does its job very well. Makes learning so much easier. You don't have to worry about when to review, or what to review, because it takes care of all that for you.

In the interests of disclosure, I did review this app previously. But that was some time ago, and before I actually bought it. There have been improvements since then, and I have had more opportunity to evaluate the app. It has certainly risen in my estimation.

Give it a try.