# MathLock > Solve math problems to unlock your apps. smart, and educational app lock. Canonical page: [https://chrome-stats.com/d/com.bigsmile169.mathlock](https://chrome-stats.com/d/com.bigsmile169.mathlock) ## Overview - **ID:** `com.bigsmile169.mathlock` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** bigsmile1004 - **Category:** EDUCATION - **Downloads:** 2,831 - **Rating:** 4.63 / 5 (59 ratings) - **Version:** 7 - **Last updated:** 2026-08-22 - **First published:** 2025-07-17 - **Publisher country:** KR - **Size:** 12 MB - **Data as of:** 2026-09-05 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.bigsmile169.mathlock) - **Website:** [https://bigsmile-1004.web.app/](https://bigsmile-1004.web.app/) - **Privacy policy:** [https://bigsmile-1004.web.app/privacy.html](https://bigsmile-1004.web.app/privacy.html) ## Description MathLock is an intelligent app locker that requires solving math problems—like arithmetic, equations, and basic statistics—to access selected apps. Instead of using a PIN or pattern, users are presented with a new math challenge each time they try to open a locked app.

Whether you're looking to sharpen your brain, manage screen time more intentionally, or help children practice math before using entertainment apps, MathLock is a smart and fun solution.

Key Features:
1.Lock apps using math challenges: addition, subtraction, multiplication, division
2.Includes basic equations and simple statistics problems
3.Randomized questions with adjustable difficulty levels
4.Clean and minimal design, optimized for ease of use

Permissions Used:
Accessibility Service: Required to detect when locked apps are opened
Battery Optimization Exemption: Ensures reliable background protection

We do not collect or share personal data. All permissions are used strictly for core functionality.
If you're a parent, student, or just someone who loves math, MathLock offers a secure and brain-friendly way to manage your apps. ## Rankings - #854,069 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.FOREGROUND_SERVICE_SPECIAL_USE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.QUERY_ALL_PACKAGES` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS` - `android.permission.WAKE_LOCK` - `com.android.vending.CHECK_LICENSE` - `com.bigsmile169.mathlock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.google.android.providers.gsf.permission.READ_GSERVICES` ## Similar extensions and apps - [MultiplyLock](https://chrome-stats.com/d/com.bigsmile169.multiplylock) — 363 users - [Math Lock](https://chrome-stats.com/d/com.mathlock.app) — 3,455 users - [MathLock: Math Games App Lock](https://chrome-stats.com/d/com.mathlock) — 404 users - [Math Applocker](https://chrome-stats.com/d/com.mathapplocker.dev) — 1,697 users - [EduLock](https://chrome-stats.com/d/com.edulock) — 203 users - [BrainBuddy Lock](https://chrome-stats.com/d/com.idealtechltd.brainbuddylock) — 69 users - [Child Lock: Math & IQ Puzzles](https://chrome-stats.com/d/com.smartparentlock) — 166 users - [Solve2Open](https://chrome-stats.com/d/app.solve2open) — 3 users - [App locker with math problems](https://chrome-stats.com/d/com.milktea.garakuta.applocktimer) — 1,282 users, 2.00 / 5 - [MathAppBlocker](https://chrome-stats.com/d/com.roygo.mathappblocker) — 1,073 users - [MathLock](https://chrome-stats.com/d/dm.mathlock) — 4,740 users, 2.40 / 5 - [OrKey: Screen Time + Learning](https://chrome-stats.com/d/com.orkey) — 77 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.bigsmile169.mathlock)