Locklify vs Math Shield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Locklify
This app transforms your phone unlocks into quick study sessions. Before accessing distracting apps, you'll answer quizzes, review flashcards, or complete focus challenges to build consistent learning habits.
- Answer short quizzes
- Review flashcards
- Complete focus challenges
- Custom study collections
- On-device study history
- Flexible challenge types
Read full descriptionHide full description
Locklify helps you build a consistent study habit before distraction takes over. With Locklify, opening social apps becomes a quick learning checkpoint: - Answer a short quiz - Review a flashcard - Complete a mini focus challenge Instead of relying on willpower, Locklify turns everyday unlock moments into small, repeatable study reps. Important: An active subscription is required to use Locklify features. Why students use Locklify - Build study consistency without long cramming sessions - Review actively with flashcards and quizzes - Create custom collections for exam prep - Use challenge gates before distracting apps - Keep study content and unlock history on-device Designed for real daily use - Quick sessions (seconds, not hours) - Flexible challenge types - Works with existing phone habits - Clear in-app setup guidance Whether you’re preparing for quizzes, finals, or weekly revision, Locklify helps you study first—then scroll. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Math Shield
Read full descriptionHide full description
Stay Focused with Math Shield Math Shield helps you reduce distractions and build better focus habits by placing a math challenge between you and your most distracting apps. Instead of mindlessly opening social media, games, or other time-wasting apps, you'll need to solve a math problem before gaining temporary access. This simple barrier helps break automatic habits and encourages intentional screen time. Key Features Block Distracting Apps: Choose the apps you want to limit and keep them locked during focus sessions. Unlock with Math Challenges: Solve math problems before accessing blocked apps. Temporary App Access: Gain limited access after successfully completing a challenge. Stay Productive: Create friction between impulses and distractions to help maintain focus. Easy Setup: Select apps, choose your preferences, and let Math Shield help you stay on track. Perfect For - Students who want to focus on studying - Professionals who need distraction-free work sessions - Anyone looking to reduce screen time - People building healthier digital habits Whether you're studying, working, reading, or spending time with family, Math Shield helps you take control of your attention—one challenge at a time. Download Math Shield and make every app unlock a conscious decision. To enjoy the full experience and to gain all the premium features, you can always purchase our Monthly, Yearly or Lifetime premium subscription pack. Math Shield will automatically charge your iTunes Account at the end of your subscription unless auto-renew is turned off at least 24 hours before the end of your current period. Subscriptions renew at the original price. You can turn off auto-renew at any time and still receive full functionality until the end of your current period, but no refund can be provided for unused portions of the subscription. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. All your previous purchases can be easily restored using the **Restore Purchase** option in the app. This will provide you access to all the premium features. You can view Math Shield Terms of Use & Privacy Policy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://github.com/vinothvino42/app-privacy-policy/blob/main/math-shield.md
Screenshots
Verdict
The clearest difference is update cadence: Math Shield at every 2 days against Locklify's every 8 days. Locklify's advantage is iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support 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. Locklify sells 2 in-app purchases, starting at $9.99 per year and Math Shield sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Locklify ships an update every 8 days, Math Shield every 2 days. Both last shipped on October 7, 2026.
| Parameter | Locklify | Math Shield |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 66 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Dat Nguyen Thanh | Vinoth Ramajeyam |
In-app purchases
Locklify
- Premium yearly3 Days trial$9.991 Year
- Lifetime$4.99
Math Shield
- Math Shield Pro Monthly$3.991 Month
- Math Shield Pro Yearly3 Days trial$12.991 Year
- Math Shield Pro - Lifetime$19.99









