These are all server-side features in the official app, which is why a MOD is inherently a hacked client.
| Feature | Official Free | Official Super Duolingo | MOD APK (v5.163.4) | |---------|---------------|-------------------------|---------------------| | Ads | ✅ Yes | ❌ No | ❌ No (locally) | | Hearts | ✅ Limited | ♾️ Unlimited | ♾️ Unlimited (fake) | | Legendary | ❌ Paid only | ✅ Yes | ⚠️ Unreliable | | Offline | ❌ No | ✅ Yes | ⚠️ Broken or fake | | Progress sync | ✅ Full | ✅ Full | ❌ Risky | | Safe | ✅ Yes | ✅ Yes | ❌ No | | Updates | ✅ Weekly | ✅ Weekly | ❌ None | Duolingo MOD APK v5.163.4 -Premium Unlocked Opt...
| Feature | Official Free Duolingo | Official Super Duolingo | MOD APK v5.163.4 | | :--- | :--- | :--- | :--- | | Cost | $0 | $6.99–$12.99/month | Free (illegal) | | Hearts System | Limited (5 hearts) | Unlimited | Unlimited | | Ads | Yes (between lessons) | No ads | No ads (claimed) | | Offline Mode | No | Yes | Yes (claimed) | | Progress Sync | Yes (cloud) | Yes (cloud) | Unreliable | | Legal & Safe | ✅ Yes | ✅ Yes | ❌ No | | Platform Support | iOS, Android, Web | iOS, Android, Web | Android only | These are all server-side features in the official
When you grant installation permissions to an unknown APK, you’re essentially giving strangers partial access to your device. Web | iOS