Monovoca vs LockFeed
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Monovoca
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This app helps users focus on learning words one at a time, tailored to their level. Words are provided automatically, and repeated exposure is delivered through push notifications based on the user’s settings, allowing natural memorization as part of daily life.
LockFeed
This app requires users to answer short quizzes before granting access to selected applications. Users can customize unlock times and the number of questions needed per unlock. It offers various learning topics and a one-time purchase for unlimited access.
- Answer quizzes to unlock apps
- Customize unlock duration
- Select number of questions per unlock
- Variety of quiz topics
- Offline quiz content
- One-time purchase for unlimited access
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Earn your screen time with a little learning. LockFeed puts a short challenge before the apps you choose. Enable one or more quizzes, choose how many questions to complete, and use Apple Screen Time to add a pause before you scroll. HOW IT WORKS • Choose the apps you want to lock. • Enable quizzes and choose how many correct answers you need to unlock. • Set a default unlock time, with optional custom times for individual apps. • Complete your challenge to unlock the app you want to use. • When your unlock time ends, the app locks again. MAKE EACH UNLOCK YOUR OWN Choose 1–10 questions per unlock. Each completed game round counts as one question. Your progress is saved if you leave before finishing. Use Advanced settings to give individual apps their own unlock time, or let them follow your default. Changing a time does not cut short an unlock you have already earned. FIVE FREE APP UNLOCKS Try five successful quiz-based app unlocks. After those five unlocks, Lifetime Access is required for further unlocks. Each earned unlock lasts for the full duration you chose. LIFETIME ACCESS A one-time in-app purchase enables unlimited quiz-based app unlocks and standalone quiz practice. Standalone practice requires Lifetime Access. There is no subscription, and the price for your region is shown before purchase. Restore Purchases is available for previous buyers. FIND SOMETHING YOU WANT TO LEARN Practice vocabulary, identify famous artworks and country flags, solve chess puzzles, or find notes on a guitar fretboard. Explore short practice questions in math, science, exam preparation, driving theory, and citizenship. Your enabled quizzes form a shared pool across your protected apps. Each new unlock request chooses one quiz from that pool. Manage your enabled quizzes or adjust your unlock settings anytime. Quiz content is bundled for offline use, and no account is required. HAVE AN IDEA OR NEED HELP? Use the Feedback tab to write a message and send it to joma@lockfeed.app from your email account. Unsent drafts are saved on your device. LockFeed uses Apple Screen Time permission to manage access to the apps you select. Short practice quizzes are learning aids, not complete exam preparation courses or official exam simulations.
Screenshots
Verdict
The clearest difference is in-app purchases: Monovoca at none against LockFeed's 6. Monovoca also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). LockFeed's advantage is update cadence (daily vs every 4 days). On price and ads 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. LockFeed sells 6 one-off in-app purchases. Monovoca asks for nothing beyond the download.
Monovoca ships an update every 4 days, LockFeed daily. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.
| Parameter | Monovoca | LockFeed |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 days | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 34 MB | 33 MB |
| Age rating | 4+ | 12+ |
| Developer | Hyunjin Jang | Mosaic Integral Innovations LLC |
In-app purchases
Monovoca
No in-app purchases
LockFeed
- Lifetime Access$0.99
- Lifetime Access$2.99
- Lifetime Access$4.99
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- Lifetime Access$9.99
- Lifetime Access$19.99
- Lifetime Access$30.00









