If you want to memorize vocabulary, let’s try this free flash cards app. This app makes you to upload to / download from Dropbox that is a popular online strage service.(The user manual of this app is here.)
1. Easy to edit and share
You can upload data to DropBox and download from Dropbox. So, you can edit not only on iPhone but also Mac/PC that is able to connect to Dropbox.
2. Easy to restore data
If this app or your iPhone crushes, you can restore as long as you uploaded data to Dropbox.
3. Easy to overcome your weak field
You can use FOCUS MODE that take cards whose pecrentage of correct answer is low.