Personal foreign language assistant app in beta. Looking for testers and feedback

Hey indie hackers! Recently I have been developing simple mobile app (android/ios) with React Native.
It is basically personal assistant for learning and improving vocabulary in foreign languages based on flashcards style.

Main idea of the app, is to create personal dictionary for vocabulary in foreign language (but can be used for anything basically), where you can store any word which you come across during the day in reading books, articles etc. The frequency of repetition has to be set also... based on that the application will send push notifications with the word. All due words will be shown in app as flashcards to practice.
App also lets you organize words into “tags”, so you can easily store words by their topic eg. Animals, sport, or purpose like upcoming english test.

The app is not for public use, but the builds are ready to install in google play and testflight. If you want to try app, and help me to test it please let me know and will send the the links to download it (or even better, please fill out this online form https://docs.google.com/forms/d/e/1FAIpQLSdGFYSu_01YHCrqiIvPhFHJJodiMWOklZ89ZYuRxElvwnMpJA/viewform?usp=sf_link&hl=en

At the moment, it is very simple app just to verify concept and functionality and i would love to hear your feedback.

Looking forward hearing your thoughts