I would like to introduce my web app Mainingu!
It is completely free, no upgrade plans and no ads at all
Feel free to use Mainingu to discover new Japanese sentences and practice your listening skills. Trying to catch the hidden word in each flashcard containing a video context (your favorite anime or drama).
It also includes a SRS feature so you can come back from time to your deck to review.
Please tell me how you like it and how I could further improve it