Use APKPure App
Get MyVocabulary | a vocabulary for your things old version APK for Android
A vocabulary to collect words or even definitions and theses from other subjects
It's basically a modern app version of the old school vocabulary, that we use at school with pen or pencil. Now you can collect all the new words and phrases here on your smartphone. Even the definitions and theses can be collected here, to prepare for a maths exam for example.