MemCards is a notebook app with memory function. It will scientifically arrange you to review your notes base on the forgetting curve of human brain.
A great helper tool for language learning.

[Ebbinghaus Memory Method] After information is entered into the brain, forgetting begins. The forgetting rate is faster and then slower with the passage of time, especially in the short time just remembered, the forgotten is the fastest, this is the famous Ebbinghaus forgetting curve. Follow the memory rules revealed by Ebbinghaus's forgetting curve and review the information in time. This memory method is the Ebbinghaus memory method.

[Data Backup and Restore] You can export your data, like saving it in "Files" application of your iOS, sending it to an email address as an attachment, or store it in other applications. What you write down will be yours forever. This app will be your ultimate language learning notebook.