What is Otonna?
Otonna is an adaptive training platform designed to help students and professionals refine their Academic English writing style through a step-by-step progressive rewriting process.
FAQ
Frequently Asked Questions
How does the 5-level training work?
You start with a simple English source sentence. In each level, you are prompted to improve it: Level 1 (vocab upgrade), Level 2 (sentence restructuring), Level 3 (logical expansion), Level 4 (nominalization & abstraction), and Level 5 (synthesis into a cohesive academic sentence).
Can I submit answers in other languages?
No. The source sentences and your submissions must always be in English. However, you can toggle the interface and AI feedback language to Chinese, Japanese, Spanish, or English.
How are sentence credits deducted?
Credits are only deducted when you start a new practice session (which generates a sentence). Rewrites and evaluations within that session are completely free until you finish or hit the 10-submission limit.
When does my subscription daily quota reset?
Subscription daily credits reset once per calendar day in UTC (00:00 UTC). Depending on your timezone this may be your local morning, afternoon, or evening. Unused daily credits do not carry over to the next day.
Do credit packs expire?
Yes. Credit packs are valid for 12 months from the purchase date. When you have multiple packs, the one expiring soonest is used first.
What happens if I refresh or close the page during practice?
Your unfinished sentence practice is restored automatically the next time you open Practice, with the same remaining submissions, so no extra credit is used. Starting a new sentence abandons the unfinished one without refunding its credit.
Isn't the Library just a collection of templates?
No. Otonna does not give you templates to memorize. Every Library pattern is extracted from a sentence you built yourself through the five-level method. The card records a reusable structure you have already produced once — the goal is to internalize the method itself, so you can rebuild similar sentences in exams without any saved material.