AnkiDroid Flashcards play online

Memorize anything with AnkiDroid!

AnkiDroid lets you learn flashcards very efficiently by showing them just before you would forget. It is fully compatible with the spaced repetition software Anki (including synchronization), which is available for Windows/Mac/Linux/ChromeOS/iOS.

Study all sorts of things wherever and whenever you want. Make good use of idle times on bus trips, in supermarket queues or any other waiting situation!

Create your own flashcard decks and enjoy free decks compiled for many languages and topics (thousands available).

Add material through the desktop application Anki or directly through Ankidroid. The application even supports adding material automatically from a dictionary!

Need support? https://docs.ankidroid.org/help.html (much preferred over comments in reviews here :-) )

Key features:
supported flashcard contents: text, images, sounds, mathjax
spaced repetition (supermemo 2 algorithm)
text-to-speech integration
thousands of premade decks
progress widget
detailed statistics
syncing with AnkiWeb
open source

Additional features:
write answers (optional)
whiteboard
card editor/adder
card browser
tablet layout
import existing collection files (via Anki Desktop)
add cards by intent from other applications like dictionaries
custom font support
full backup system
navigation by swipe, tap, shake
fully customisable
dynamic deck handling
dark mode
100+ localisations!
All previous AnkiDroid versions can be downloaded from the website