Zetamac Arithmetic Practice vs Kelma Immersion

Zetamac - A mental math practice app used in the Quantitative Finance world.

Kelma Immersion turns the things you love to read and watch into a language course built around you. Open a story, article, book, or video in the language you’re learning. Tap any word or phrase to see its meaning in context, hear it pronounced, and read a short grammar note. Want to keep it? One tap turns it into a flashcard with a photo, natural audio, and real example sentences. NEW: REVIEW BREAKS Keep new words fresh without leaving your story. After a few minutes of reading or watching, Kelma pauses for a short break with the cards that are due, then puts you right back where you were. Optional AI practice sentences test your own words in new contexts. LEARN FROM REAL CONTENT • Interactive reading: tap a word, or slide across several to look up a phrase • Add web articles, EPUB, PDF, and text files, or paste your own passage • Watch videos with interactive subtitles • Free starter readings in every supported language • Practice translation to check your understanding FLASHCARDS THAT MAKE THEMSELVES • Photos, audio, example sentences, word forms, and pronunciation guides, generated for you • Review and edit every card before it’s saved • Cards sync to Kelma Review on iPhone, iPad, Android, and desktop NATURAL VOICES AND DIALECTS • Preview voices with a sample sentence in your language • Dialect support, including Moroccan Darija, Egyptian, Levantine, Mexican, Rioplatense, and more • Human recordings when available ALSO INCLUDED • Alphabet Trainer for Arabic, Greek, Russian, and more • Study timer and progress stats • Light and dark appearance with multiple color styles • Privacy controls and in-app account deletion Kelma Immersion is free to download. Cloud uploads and AI-assisted features use Included Usage that comes with a monthly Basic or Pro subscription, available in the app. Personal AI credentials can be configured in the web client. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kelma.tech/privacy