You may find the Learn Numerals app useful because it’s not about chemistry. It’s about another thing where you have to learn by heart a lot of new words: numerals (numbers) in 7 major European languages.
The English description of the game is the following:
In this app, you’ll learn the names of numerals in 7 important languages. Please choose the learning method that suits you the best.
1. The app got into an “overnight” review. Yesterday, 8 days after the submission, the status changed to “in review”, but it was not until this morning, it was finally reviewed and placed on the App Store (formally after 17.5 h in review).
2. New features:
– It’s my first app since Monster! that uses different languages as quiz modes.
– The game is localized to those 7 languages as well. I believe that the localization at the time of the release (rather than in an update) was a key to the relative success of Hydrocarbons.
– There are interstitial ads that appear randomly around the 15th question (or flashcard). I’m disappointed with the “Press button to watch ads – Get 30 hints” approach that generated some impression but very, very little money.