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Platform Comparison · 2026
Duolingo dominates language learning — but that is all it does. Koydo is the Life Learning OS covering the full K-12 curriculum and beyond — from ages 3 to adult. Ages 3+ · 8,000+ modules · 330+ games · 20 languages.
The Koydo Advantage
Duolingo teaches languages. Koydo teaches everything — math, science, reading, history, coding, art, music, and yes, languages too. One platform for the full K-12 journey.
Every paid Koydo plan includes Everyday Tutor that adjusts to your child's level across every subject. Duolingo has no AI tutoring capability.
Koydo's Family plan covers up to 4 learner profiles at $17/mo. Duolingo has no family plan — each person needs their own account.
COPPA compliant, no ads, no tracking. Designed from age 3+. Duolingo requires users to be 13+ and shows ads on the free tier.
Feature Breakdown
| Feature | Koydo | Duolingo |
|---|---|---|
| Subjects Covered | ✓ Math, science, reading, history, coding, art, music & more | ✗ Languages only |
| K-12 Curriculum | ✓ Full structured K-12 curriculum | ✗ No curriculum — language practice only |
| AI Tutor | ✓ Everyday Tutor included in paid plans | ✗ No AI Tutor |
| Modules / Content | ✓ 8,194 modules across all subjects | ✗ Language courses only |
| Educational Games | ✓ 334 games across all subjects | ✗ Language-based mini-games only |
| Languages | 20 UI languages + multilingual curriculum | ✓ 40+ languages (language learning only) |
| Age Range | ✓ Ages 3+ | ✗ Ages 13+ (officially) |
| Family Plan | ✓ $17/mo — up to 4 learner profiles | ✗ No family plan — individual accounts only |
| Gamification & Streaks | Streaks, leagues, badges, XP rewards | Streaks, leagues, XP (language-focused) |
| Offline Access | Available on mobile app | Downloaded lessons (language only) |
| COPPA Compliant | ✓ Child Safe, No Tracking | ✗ Age 13+ requirement — not for young children |
| No Ads Ever | ✓ No Ads Ever — all tiers | ✗ Ads on free tier; Duolingo Super removes ads |
| Monthly Price | Free tier + $9/mo Plus | Free (ads) or $6.99/mo Super |
| Native Mobile App | iOS + Android | iOS + Android |
| Progress Reports for Parents | ✓ Family Home — full progress per child | ✗ No parental dashboard |
Comparison data current as of January 2026. Duolingo is a registered trademark of Duolingo, Inc.
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Feature Spotlight
An adaptive AI Tutor that personalizes every lesson across math, science, reading, and more — not just language drills.
Educational games spanning every subject from math to music. Duolingo has mini-games for language only.
Math, science, reading, history, coding, art, and music — the complete academic journey from PreK through 12th grade.
Common Questions
Start free — no card required. AI Tutor, modules, educational games, and family plans in one place.