FAQ
Common questions about LingeAI.
About LingeAI
What is LingeAI?
A browser extension that helps you learn languages while browsing. Get instant translations, build vocabulary, and review with spaced repetition.
What languages are supported?
50+ languages including:
Popular: English, Chinese, Spanish, French, German, Japanese, Korean
European: Italian, Portuguese, Dutch, Russian, Polish, Swedish
Asian: Thai, Vietnamese, Indonesian, Hindi, Arabic
Is LingeAI free?
Yes. Free plan includes:
- Unlimited translations
- 500 vocabulary words
- Basic spaced repetition
- Core features
Pro unlocks unlimited vocabulary and advanced features.
What browsers work?
| Browser | Supported |
|---|---|
| Chrome | ✅ |
| Edge | ✅ |
| Brave | ✅ |
| Arc | ✅ |
| Opera | ✅ |
| Firefox | Coming soon |
| Safari | Coming soon |
Features
How accurate are translations?
LingeAI uses state-of-the-art AI. Accuracy is comparable to professional translation for common languages.
Does it work offline?
Basic translations of common words work offline via local caching. Full features require internet.
Mobile support?
Currently desktop only. Mobile app is on our roadmap.
How does spaced repetition work?
Based on the SM-2 algorithm:
- New words appear frequently
- Known words appear less often
- Difficult words repeat more
- Intervals optimize for long-term retention
Account & Privacy
Do I need an account?
No. Core features work without one. Account needed for:
- Sync across devices
- Cloud backup
- Pro features
What data do you collect?
With account: Email, preferences, vocabulary (encrypted)
Without account: Nothing stored on our servers
Never collected: Browsing history, personal info, page content
Can I delete my data?
Yes. Settings → Data → Delete Account
All data permanently removed.
Is my vocabulary secure?
- Encrypted in transit (HTTPS)
- Encrypted at rest (AES-256)
- Never shared with third parties
Plans & Billing
What's in Pro?
| Feature | Free | Pro |
|---|---|---|
| Translations | Unlimited | Unlimited |
| Vocabulary | 500 | Unlimited |
| Advanced features | ❌ | ✅ |
| Priority support | ❌ | ✅ |
How do I upgrade?
- Click LingeAI icon
- Settings → Account
- Upgrade to Pro
Can I cancel?
Yes, anytime. Keep Pro until billing period ends.
Refunds?
30-day money-back guarantee. Email support@lingeai.com.
Learning Tips
How many words per day?
| Level | Recommendation |
|---|---|
| Beginner | 5–10 words |
| Intermediate | 10–20 words |
| Advanced | 20+ words |
Consistency beats quantity.
When will I see results?
| Timeframe | Progress |
|---|---|
| 1 week | Recognize common words faster |
| 1 month | Noticeable vocabulary growth |
| 3 months | Read simple content comfortably |
| 6 months | Significant comprehension improvement |
Best practices?
- Browse in target language daily
- Save unfamiliar words
- Complete daily reviews (100%)
- Use Reading Mode for articles
- Stay consistent—10 min/day helps
Help
- 📧 support@lingeai.com
- 🐛 Report bugs via extension → Help → Report Bug
- 💡 Feature requests: feedback@lingeai.com