Usage Limits
Every Duowise plan includes generous daily and monthly limits. Here is a complete breakdown of what each plan offers.
Monthly Lesson Generation
Lessons are generated using AI language models and text-to-speech synthesis. Each plan includes a monthly allowance that resets on your billing date.
| Plan | Lessons / month | Price |
|---|---|---|
| Free | 3 | $0 |
| Pro | 30 | $20/mo |
| Lesson Pass | 1 per pass (max 20/mo) | $1 each |
Daily Interaction Limits
Within each lesson, you can interact with AI conversations, look up vocabulary definitions, and listen to text-to-speech audio. These interactions have daily limits that reset at midnight UTC.
| Interaction | Free (daily) | Pro (daily) |
|---|---|---|
| AI Conversations | 10 | 100 |
| Vocabulary Lookups | 20 | 200 |
| Text-to-Speech Plays | 30 | 300 |
Lesson Pass Quotas
Each Lesson Pass comes with its own interaction quota, separate from your daily plan limits. These per-lesson quotas are only consumed after your daily limits are exhausted.
| Interaction | Per Lesson Pass |
|---|---|
| AI Conversations | 50 |
| Vocabulary Lookups | 100 |
| Text-to-Speech Plays | 150 |
You can purchase up to 20 Lesson Passes per calendar month.
Recommended Usage
Here is how we recommend using Duowise to get the most out of each plan.
Free Plan — Casual Learners
With 3 lessons per month, focus on articles or topics you are genuinely interested in. Spend time on each lesson's AI conversation to practice speaking. Use vocabulary review daily — it does not count toward your interaction limits and is the most effective way to retain new words.
Pro Plan — Dedicated Learners
Generate a lesson every day or batch-create lessons from a series of related articles. The 100 daily AI conversations let you have in-depth practice sessions. Take advantage of learning statistics to track your progress and identify weak areas. Export your vocabulary to Anki for additional review outside the app.
Lesson Passes — Flexible Top-Ups
Use Lesson Passes when you find an article you must turn into a lesson but have used your monthly allowance. Each pass is self-contained with generous interaction quotas, perfect for one-off deep dives into specific topics.
How Limits Work
- Daily limits reset every day at midnight UTC, regardless of when you signed up.
- Monthly lesson limits reset on your billing date (for Pro) or the first of each month (for Free). Unused lessons do not roll over.
- Vocabulary review (spaced repetition) is unlimited on all plans and does not consume any daily limits.
- Cached interactions — if you replay a TTS audio or re-read a definition you already looked up, it is served from cache and does not count toward your daily limits.
Have questions about limits? Contact our support team.