SPACED REPETITION · FSRS
Your materials become flashcards. All on your iPhone.
Lorebyte is a spaced-repetition (FSRS) flashcard app for language learners and IT-certification candidates. AI turns PDFs, photos, CSV, and text into flashcards, and the app keeps them coming back until you remember. Add an iPad or Mac for even more comfortable creating and organizing.
AI CARD GENERATION
Paste it. Snap it. AI makes the cards.
A textbook page, lecture notes, an article — hand Lorebyte your material and AI drafts question-and-answer cards. You just review and save.
- ✓ On-device AI — On supported devices (Apple Intelligence), generation runs entirely on-device — your material never leaves it.
- ✓ Bring your own key — Add your OpenAI or Anthropic API key to use larger cloud models whenever you want.
- ✓ You approve every card — Generated candidates appear in a review list to edit before saving. AI drafts; you decide.
Try 20 generations free. Full Unlock removes the limit.
THE APP
One experience, every screen.
FEATURES
From learning to retention, in one app.
Smarter spaced repetition
The FSRS-5 algorithm schedules each card right before you'd forget it. Just rate recall as Again, Hard, Good, or Easy. Miss counts surface your weakest cards automatically, and a practice mode lets you keep going without affecting your records.
AI-generated cards
Paste text or pick a PDF or photo, and AI drafts your flashcards. Runs on-device on supported hardware, or bring your own API key for cloud AI.
Build cards from what you have
Import from PDF, screenshots, images, CSV, or text. Japanese/English OCR turns pictures into cards.
Built-in translation help
Show Japanese translations for English questions, answers, and explanations — translate a whole import in one tap. Adjustable text size keeps long questions readable during review.
Synced across your devices
Decks, cards, and study history sync through iCloud—no separate account, and it works offline.
Daily goals and streaks
Gentle daily goals and up to three reminders a day. Miss a day or two and recovery keeps your streak alive.
HOW IT WORKS
From materials to mastery, on one iPhone.
Import your materials
Just pick a PDF, photo, CSV, or text. Exam-prep CSVs for IT certifications load as-is.
AI makes the cards
On-device AI, or your own API key. Questions, choices, and explanations come out cleanly formatted.
Review in spare moments
Scientific spaced repetition (FSRS) manages every card until it sticks, resurfacing each one right before you'd forget.
EVERY DEVICE
One study system, every device.
Everything from import to review works on any one device. Combine iPhone, iPad, and Mac, and iCloud keeps the same study system on every Apple device.
No ads. No tracking.
Your study data stays on your device or in your own iCloud.
PRICING
Free for 7 days. Then one simple purchase.
$6.99 $9.99
Launch price through the end of August
One-time purchase (tax included; App Store pricing may vary by region)
- ✓ Unlock every feature, permanently
- ✓ No monthly fees, no auto-renewal
- ✓ Reinstall? Restore Purchases to unlock again
- ✓ Refunds handled by Apple
Purchases are billed to your Apple ID. See our Terms for details.
FAQ
Frequently asked questions
Which devices are supported? ＋
iPhone (iOS 18+), iPad (iPadOS 18+), and Mac (macOS 15+). Apple devices only.
Is AI card generation free? ＋
On supported devices (Apple Intelligence, iOS/macOS 26+) generation runs fully on-device and your material never leaves the device. Everyone gets 20 free generations to try; the one-time Full Unlock removes the limit. You can also bring your own API key (OpenAI, Anthropic, and more) for cloud AI — usage is billed to your own account.
Does it work offline? ＋
Yes. Creating cards, reviewing, and logging history work offline and sync when you reconnect.
What happens after the free trial? ＋
After the 7-day trial, a single one-time purchase unlocks the app for good. No auto-renewal, no monthly fees.
Is my data private? ＋
No ads or tracking. Your data stays on your device or in your own iCloud.