Study and test knowledge of the 20 standard acids through customizable quizzes. Topics include names, structural formulas, 1-letter and 3-letter codes, codons, and side chain classes. Quizzes are available for free. Remove ads with an in- purchase.
Learn word pronunciations with audio examples and compare your recording to the model. View definitions and practice speaking. Supports English, Spanish, French, German, Italian, Portuguese, and other languages.
Learn basic operations including addition and subtraction up to 20, adding tens, and identifying missing numbers in sequences. with unlimited access to educational content and over 500 quizzes.
Text or speech in 104 languages. Switch between text-to-text, speak mode, and conversation mode for real-time translations. Supports Apple Speech Recognition and Siri preferences for voice input. Share translated content directly.
Write text by hand in multiple languages simultaneously. Access Google word suggestions for accurate predictions. Switch between languages effortlessly. Support for over 100 languages including Afrikaans, Arabic, and Chinese.
Languages by speaking sentences and receiving translations. Practice pronunciation with word-by-word exercises. Get feedback on speech accuracy using AI. spoken input into target languages. Track progress through interactive lessons.
Build with interactive and practice language skills through spaced repetition. Create custom decks, set learning goals, and track progress over time. Share cards with others and review content on multiple devices.