This app offers a calm and focused approach to revision using spaced repetition. It allows users to import or create study decks and provides intelligent scheduling for optimal memory retention without distracting gamified elements.
1.2.0
June 11, 2026
sumi just got a big, calm refresh. - A cleaner home with a quieter, more focused layout - Redesigned study flow: recall first, then reveal and rate - Tap once for dark mode, right from the home screen - A friendlier Getting Started guide built right in - Smoother, faster, and more reliable throughout As always: no account, no servers, nothing leaves your device.
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sumi pro - lifetime
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Thanks for the feedback Rick! We really appreciate it, as a solo developer updates take a little longer but we will definitely be incorporating this into the next one! Thanks again for using Sumi!
sumi utilizes the FSRS algorithm to schedule card reviews at optimal intervals, just before you're likely to forget them. This method enhances long-term memory retention while minimizing study time.
Yes, sumi supports importing decks from Anki (.apkg) files, as well as CSV, TXT, and JSON formats. This makes it easy to transition your existing study materials.
sumi is currently supported on iPhone and iPad. The app is designed to be private by default, with no account or servers, meaning your data stays on your device.
Unlocking sumi pro offers unlimited decks and cards, unlimited imports, cram and reverse study modes, and detailed progress insights. This is a one-time purchase for permanent access.
No, sumi is designed to be calm and focused, intentionally omitting gamified elements like streaks, leagues, or badges. The goal is a gentle daily review experience.
The latest version of sumi is 1.2.0, last updated on 2026-06-11. Updates aim to improve functionality and user experience.
sumi has an age rating of 4+, making it suitable for a wide range of users. The app focuses on educational content and a simple user interface.
The base sumi app is free to download and use. Optional 'sumi pro' features can be unlocked with a one-time purchase, with a monthly subscription option also available for $1.99.