Koydo vs. Duolingo
Duolingo is the leader in gamified single-language practice. Koydo includes 56 languages as one part of an age-aware learning platform that also covers core academic subjects and test prep.
Feature by feature
| Feature | Koydo | Duolingo |
|---|---|---|
| Price (entry tier) | Free Limited, $0 / no card / no ads | Free with ads |
| Price (paid tier) | Plus $9 / mo · Family $17 / mo | Super Duolingo ~$7 / mo · Family ~$10 / mo |
| Languages offered | 56 (study), integrated with broader curriculum | 40+ courses, language-only |
| Subject coverage | Math, reading, science, humanities, test prep, more — plus languages | Language only (Duolingo Math is a separate app) |
| AI tutor | Everyday Tutor included on every paid plan | Duolingo Max includes Roleplay + Explain My Answer ($14 / mo or $30 / mo) |
| Ad model | Zero ads on any tier | Free tier shows ads between lessons |
| Age targeting | Age-aware tone and pacing per learner stage | Same UI for all ages (Duolingo ABC is a separate app) |
| Streak / gamification | Streaks + achievements (no competitive ranking) | Aggressive streak + league mechanics |
| School deployment | FERPA, SSO, cohort dashboards | Duolingo for Schools (free K-12 tool) |
| Offline access | Yes on Plus and above | Yes on Super |
| Operator | KOYDO LLC | Duolingo, Inc. (NASDAQ: DUOL) |
Which one fits your learner
When Koydo fits better
- Languages are one of several subjects the learner studies
- You want zero ads at any tier
- You want one platform across multiple learners and ages
- You want test prep + language study under one subscription
When Duolingo fits better
- Your only goal is intensive language practice
- Streak-based gamification motivates the learner
- You're fine with ads on the free tier
- You want the deepest gamification in the language category
About this comparison
Last updated May 16, 2026 by Koydo Lyceum. Comparison data reflects publicly-stated competitor features at the time of writing.