📘 Learning & review

Reviews at the right time

💡 Echo schedules each item based on your memory (FSRS); reviews are always free.

The schedule

After each answer Echo estimates when you would forget the item and schedules a review just before — strong items come back less often. The Review page has Due, Weak, Saved and History tabs.

Unlimited

Reviews are never locked and never use plan limits.

❓ Common questions

Tap a question to ask Vulpi — answers come from this guide.

🦊 Still curious? Ask Vulpi

≈ 1 AI credit / answer

💡 Questions about using Echo are usually answered in the guides — search there first (free) and save your AI credits for grading speaking, writing and pronunciation. Open the Help center →Ask about vocabulary, grammar, pronunciation or your lessons. Vulpi guides you to understand — it never gives test answers.

🕒 Updated: 11/2/2026