Sylvi vs Flashcard Blocker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sylvi
Practice foreign languages with AI penpals who provide tutor-level feedback on every message. Learn essential phrases, build vocabulary, and stay motivated with friends. Offers a free trial before subscription.
- AI penpals for language practice
- Real-time message correction and explanation
- Vocabulary building and memorization tools
- Practice with friends
- Streak preservation
- Flashcards and leaderboard
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AI penpals that feel like native friends. Tutor-level feedback on every single message. That's Sylvi. You can even pick a penpal with the exact accent you want to have. French (France and Canada) Spanish (Spain, Mexico, Colombia, Puerto Rico, etc) German Italian Portuguese (Portugal and Brazil) English (UK, US, Australia) More languages coming soon - follow our journey on @sylvi_app Too shy to talk to a native speaker? Practice with AI penpals who know you well enough to ask about your day. Every message you send is corrected and explained in real time - not just flagged, but actually taught, so when the real moment comes, you're ready for it. - Learn the phrases you need, for the life you lead Build your vocabulary by saving words important to you. Test yourself daily to memorise them. - Stay accountable with friends Practice with your friends regardless of what language they're learning or what level they're at. "I've used a lot of different language apps... but Sylvi has been the one I've been having the most success with growth-wise. At least from what my tutor tells me." Can't bear to lose your streak? We won't tell. If you've got a streak you can't bear to lose, message us at support@sylvi.ai and we'll transfer it straight to Sylvi. Try us free for 1 week, then pick a subscription that works for you. "I know grammar. I know all of these vocabularies, but you're kind of stuck in the middle of like - how do I become comprehensible? Then I found Sylvi" - Amira, UK "I could say, 'I'm going to the cinema today'. Then if I do Sylvi tomorrow, my penpal will come back and say, 'so what film did you see at the cinema?'. I love the continuity. It's so clever." - James, US
Flashcard Blocker
This app helps you learn new vocabulary using flashcards and spaced repetition while also limiting access to distracting applications. Earn time to use your blocked apps by completing learning sessions.
- Customizable word sets
- Flashcard learning
- Spaced repetition
- App blocking
- Time-based access
- Learning modes
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LearnScreen combines vocabulary practice with limits on distracting apps. Choose a built-in word set or add your own words. Review them with flashcards and spaced repetition. Select the apps you want to limit, choose a blocking mode, and set the days and times when it applies. Use short reviews and time earned through practice to manage access to your selected apps. Learning and access options depend on the mode you choose. Start with words you want to remember and a schedule that fits your routine. Terms of Use: https://learnscreen.vercel.app/terms.html Privacy Policy: https://learnscreen.vercel.app/privacy.html
Screenshots
Verdict
The clearest difference is ratings volume: Sylvi at 342 against Flashcard Blocker's 4. Sylvi also leads on update cadence (every 3 days vs weekly) and iOS requirement (16.4 vs 18.0). Flashcard Blocker's advantage is rating (5.0 vs 4.7) and review sentiment (100% vs 83%). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sylvi sells 10 in-app purchases, starting at $2.99 per month and Flashcard Blocker sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Flashcard Blocker holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Sylvi has 342 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 83% of Sylvi's written reviews are positive against 100% of Flashcard Blocker's.
Sylvi ships an update every 3 days, Flashcard Blocker weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.
| Parameter | Sylvi | Flashcard Blocker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (342 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 83.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 342 — better | 4 |
| Update frequency | Every 3 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 143 MB | 31 MB |
| Age rating | 12+ | 4+ |
| Developer | Sylvi Ltd | Roman Grunin |
Customer experience
Sylvi
Flashcard Blocker
Bugs and requests
Sylvi
Reported bugs
3 issues- Frequent app crashes
- Subscription issues
- Inconsistent user experience
Requested features
5 requests- Expand language options
- Improve free version features
- Implement more personalized learning
- Add more advanced conversation scenarios
- Improve speech recognition accuracy
Flashcard Blocker
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sylvi
- Sylvi Lite (Monthly)7 Days trial$2.991 Month
- Monthly7 Days trial$13.991 Month
- Monthly7 Days trial$19.991 Month
Show 7 moreShow fewer
- Monthly7 Days trial$24.991 Month
- 3 months14 Days trial$39.993 Months
- 3 months7 Days trial$39.993 Months
- Annual7 Days trial$59.991 Year
- Annual14 Days trial$83.901 Year
- Annual7 Days trial$89.991 Year
- Annual7 Days trial$129.991 Year
Flashcard Blocker
- PRO - Monthly7 Days trial$4.991 Month
- PRO - annual7 Days trial$19.991 Year
- PRO - Lifetime$59.99









