Flevro is a cloud-native spaced repetition app that adapts to your learning pace. Study anywhere, sync instantly, and remember forever.
Built with modern tech for instant interactions and zero loading screens.
Powered by the state-of-the-art Free Spaced Repetition Scheduler for optimal memory retention.
All your decks, cards, and review history sync automatically to the cloud across every device.
Compete on the leaderboard, earn achievements, and stay motivated with friends, events and challenges.
Train your knowledge with minigames like Balloon Game and Survival Game.
Share decks and collaborate globally with public or private study groups.
Stop typing cards one by one. Paste text, drop a URL, or upload a photo — Flevro's AI builds your deck in seconds.
Paste text
Articles, notes, Wikipedia pages — any text becomes flashcards
Drop a URL
Give a link and we extract the key concepts automatically
Upload images
Photos, screenshots, handwritten notes — all supported
Flevro takes the science of spaced repetition and wraps it in a modern, effortless experience.
The most accurate spaced-repetition algorithm available — up to 40% fewer reviews than Anki's SM-2 for the same retention.
Create an entire deck from text, a URL, or a photo. No plugins, no add-ons — built right in.
Your decks live in the cloud and sync instantly across every device — phone, tablet, or desktop.
Neural2 and Gemini voices on every card — no add-ons required. Perfect for language learners.
A clean, modern interface that works great in the browser, as a PWA, or on mobile — no setup needed.
Bring your existing .apkg and .colpkg decks in seconds. Switch without losing years of study history.
The science of Anki, the simplicity of modern apps — without the friction.
| Flevro | Anki | Quizlet | |
|---|---|---|---|
| FSRS-5 smart scheduling | Manual setup | ||
| AI card generation | Via add-ons | Limited | |
| Cloud-native sync | Manual setup | ||
| Natural TTS voices built in | Via add-ons | Basic | |
| Anki import (.apkg) | |||
| Gamification & minigames | Basic | ||
| Modern, mobile-friendly UI |
Easily build flashcards with text, audio, and images. Auto-translate and generate TTS with one click.
Review cards based on the optimal FSRS-5 schedule to maximize retention and minimize effort.
Watch your knowledge grow. Sync across all your devices and never lose a word.
Flevro seamlessly syncs across all your devices. Start a session on your phone during your commute, and finish it on your laptop at home. Your progress is always up to date.
Flevro uses the Free Spaced Repetition Scheduler (FSRS-5), a state-of-the-art algorithm that predicts exactly when you are about to forget a card. By studying at the optimal moment, you can reduce your study time by 20% while maintaining the same retention rate.
"Flevro completely changed how I study Spanish. The cloud sync is flawless and the voices are incredibly natural."
Sarah M.
Language Learner
"As a medical student, I need to memorize thousands of terms. The FSRS algorithm literally saves me hours every week."
David K.
Medical Student
"Finally, an app that brings modern AI and spaced repetition together beautifully without locking me into a clunky interface."
Elena R.
Polyglot
Yes, our core features are completely free. We offer a premium plan for advanced AI voices and unlimited uploads.
Yes! Flevro is cloud-native. Your decks, cards, and reviews are instantly synced across all your devices.
Yes, you can import your .apkg and .colpkg files directly into Flevro. Import is free for files up to 50 MB on the free plan (5 GB on paid plans).
The free plan includes unlimited cards across up to 3 decks or documents, cloud sync, full FSRS-5 scheduling, Neural2 TTS voices, AI translation, and AI phrase generation — no credit card required.
Paste any text, drop a URL, or upload a photo or screenshot. Flevro's AI reads the content and generates a full set of flashcards in seconds. Available on Pro and Premium plans.
FSRS-5 is a state-of-the-art spaced-repetition algorithm that models how your memory actually works. It predicts exactly when you are about to forget a card and schedules the review at the optimal moment — resulting in fewer reviews for the same retention compared to older algorithms like SM-2 (used by Anki).
The free plan includes Neural2 voices for English, Portuguese, Spanish, French, German, Dutch, and Japanese. Premium users also get access to Gemini TTS voices, which support any language.
The free plan includes unlimited cards, 3 decks and full FSRS-5 scheduling — forever. Upgrade to Pro from $2.99/month when you need more.
Join thousands of learners who have switched to the most advanced spaced repetition app.