ChineseSkill Word has 70 categories of SRS flashcards to help you memorize vocabulary faster. Like all SRS apps, it follows your natural forgetting curve, reviewing vocabulary at different intervals depending on how well you remembered it during the last review session. Although it is available on Apple and Android mobile devices, the one for Apple does not seem to have been updated for the newest version of iOS, so it is missing a lot of functions.
Each card contains pronunciation by native speakers and an example sentence containing the word. You can read simplified or traditional characters and choose to display either the translation, pinyin, or Chinese characters on the front of each card. Unfortunately, the app doesn’t leave much room for customization, and unlike other apps that provide attainable goals for each session, ChineseKill Word’s sessions seem to be as long as the number of words in a deck — this could be as few as 19 cards, or as many as 2482.
If you are looking for an app with an attractive interface and set decks of vocabulary, then ChineseSkill Word may be a reliable, inexpensive option for you. However, with a little more investment you can use Pleco, which is still the best flashcard app and dictionary for Chinese learners — it provides in-depth definitions, multiple example sentences, any word you can think of, and customizable SRS.