OPTIFLASH

Learn vocabulary and keep it in memory

OptiFlash tells you exactly which cards to review and when, so you spend less time but remember for longer.

120k+ cards reviewed this month
92% average retention

Web · iOS · Android

- After every answer, OptiFlash recalculates the next review time and syncs progress across devices.

- Guided import: paste a topic (travel, medicine, legal…) and get cards ready to check before saving.

- Dashboards highlight how many words are stable and which cards are overdue.

Built for focused learners

Save time, track stats, and keep exam lists fresh without extra tools.

Automatic scheduling

We record each rating (again/hard/good/easy) and compute the next review so you revisit a word right before you forget it.

Seamless sessions

Create a card on mobile, review it on desktop—the decks stay in sync within seconds, even if you start offline.

Privacy-first

Data stays in the EU, is never sold, and you can export or delete it without contacting support.

Guided import

Paste any topic and receive a CSV of cards you can edit before importing.

Real vocabulary gains

Learners rely on OptiFlash to retain exam lists and professional vocabulary.

«Three weeks before finals I doubled my active vocabulary. The app flags the weak spots instantly.» High school senior
«I prep the TOEIC with 15 minutes a day and never lose the words I studied the day before.» International business student
«As a French learner I track everyday expressions and can export my lists to share with classmates whenever I need.» French learner (B1)