Exams are coming: turn your notes into flashcards and review only what's due today. FSRS shows each card right before you'd forget it.
Turn your notes, photos and PDFs into flashcards in seconds — then remember them for good. Hotaru uses Apple Intelligence to write study cards from your own material, and FSRS, the spaced repetition algorithm behind Anki, to show each card right before you'd forget it.
Studying is free, forever. No ads, no tracking.
MAKE FLASHCARDS FROM ANYTHING
• Paste notes, scan a textbook page, pick photos of the whiteboard or open a PDF
• Apple Intelligence writes clear question-and-answer cards on your device — your material never leaves your iPhone
• Watch the cards appear, keep the good ones, start studying
• Prefer writing your own? Create cards by hand, import from Quizlet, Anki or CSV
REMEMBER MORE, REVIEW LESS
• FSRS spaced repetition: about a quarter fewer reviews than older schedulers for the same memory
• Rate each card Again, Hard, Good or Easy — or just swipe
• Type your answer and Apple Intelligence checks it by meaning, not spelling
• Ask for an explanation of any card when it doesn't click
250+ READY-MADE DECKS
Explore 18 subjects: Spanish from A1 to C1, French, Italian, German, Japanese, Chinese and Korean; chemistry, physics, biology and astronomy; nature and animals; anatomy, medicine and first aid; math from fractions to calculus; programming, Excel and cybersecurity; history and geography; art, music, film and literature; finance, accounting, marketing and careers; philosophy, psychology and the science of learning; food and sports. Search, filter and add any deck in one tap.
Some decks open with Glow, a little light you earn by studying — or get in small packs.
A FEW MINUTES A DAY
• Today shows what's due and how long it'll take
• Home and Lock Screen widgets, Control Center, Siri and Shortcuts
• Gentle reminders only on days something is due — streaks that rest instead of shaming
• Insights: your streak, reviews, recall and what's coming up
MADE FOR IPHONE AND IPAD
Liquid Glass design, beautiful serif cards, Dark Mode, Dynamic Type and VoiceOver. Sign in with Apple to sync across devices and share any deck with a link — or use Hotaru with no account at all.
PERFECT FOR
Exams, med school (MCAT, USMLE), nursing, law, languages and vocabulary, certifications, school and university — or anything you want to remember for life.
HOTARU PRO
Studying stays free. Try Hotaru Pro free for 3 days: unlimited decks (free includes 2), unlimited Apple Intelligence creations (free includes 1 a week), every Pro deck in Explore (some decks are free; Glow decks open with Glow), full Insights and four more app icons. After the 3-day free trial, a monthly or yearly subscription; it renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in Settings.
Terms of Use: https://jjsoftware.online/hotaru-terms
Privacy Policy: https://jjsoftware.online/hotaru-privacy-policy
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What's new in Hotaru 1.1.3
• Made for iPhone Duo: open, Hotaru fills the big screen; closed, it fits the cover screen
• Hotaru Pro's plans sit beside the details on wide screens
• Small fixes and improvements
Questions or ideas? contato@jjsoftware.online — we read everything.
Version 1.1.3
The developer, Jhonathan Stanley de Luca Lima Costa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Contact Info
User Content
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Jhonathan Stanley de Luca Lima Costa
Size
32.6 MB
Category
Education
Compatibility
Requires iOS 26.0 or later.
iPhone Requires iOS 26.0 or later.
iPad Requires iPadOS 26.0 or later.
Mac Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.