# DrillLock: Math App Blocker — Solve math to cut screen time > Math-based app blocker to protect study time and prevent distractions. (iPhone/iPad app by FRONTLINE LLC.) - Source: https://appshunter.io/ios/app/drilllock-math-app-blocker/id6759181330 (this page in markdown: same URL + `.md`) - Developer: [FRONTLINE LLC](https://appshunter.io/developer/1877229947) - Category: Productivity, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish and 3 more - Released: 2026-02-18 - Data updated: 2026-09-29 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/drilllock-math-app-blocker/id6759181330/reviews.md ## What is DrillLock? Your study hours and your sleep are too important to leave to willpower. DrillLock locks the apps that eat them, and nothing opens again until you solve a math problem. You choose the apps that pull you away, and the hours they stay shut. Reach for one anyway and the math is waiting. Your hand stops, and the moment passes. IF THIS SOUNDS LIKE YOU • You sit down to study, open one app for a second, and the next hour is gone • You get into bed on time and you're still awake at 1 a.m., scrolling • You have a deadline this week and keep drifting away from the work • You're studying for an exam, a license, or a degree while working full time • You've tried Screen Time and found it far too easy to tap right past WHAT YOU CAN DO Everyone starts with the same rule set: one lock — Instant or Schedule — the math challenge, and three ten-minute unlocks a day. • Start focusing right now (Instant) Choose 15 minutes, 30 minutes, or an hour, and the noisy apps are out of reach for exactly that long. Made for the moment you finally sit down. • Decide once when the phone goes down (Schedule) Set the days and the time windows a single time. Your study block and your bedtime then hold on their own, so you're not renegotiating with yourself at midnight. • One question stands between you and the app (Math Challenge) Nothing opens until you solve a math problem and get it right. It's a small enough step to clear when you truly need the app, and just enough friction that most of the time you set the phone down instead. • Ten minutes, three times a day (Temporary Unlock) Get the challenge right and the app opens for ten minutes, then re-locks itself — no timer to watch, and one tap ends it early when you're done sooner. You get three a day. Once you've used the third one, the challenge stops appearing until tomorrow, and the lock simply holds. GOOD TO KNOW • DrillLock needs Screen Time permission to lock and release apps • Phone and other essential apps are never locked, so you can always reach help in an emergency • Locking runs on Apple's Screen Time system, so iOS decides part of how a blocked app looks and behaves • Every locking decision is made on your iPhone. DrillLock does not send your browsing history or the names of the apps you restrict. DrillLock collects anonymous usage data to improve the app. PRO: WRITE THE RULES YOURSELF • Run several locks at once, so your study block, your work hours, and your bedtime each get their own • Allowlist mode: shut everything except the handful of apps you name • Lock by usage instead of by the clock (Time Limit): give an app a daily allowance, and the moment you pass it, it closes for the rest of the day • Design the temporary unlock yourself: one to ten a day, at five, ten, twenty, or thirty minutes each • Hard challenges, with your own choice of digit count and number of questions Loosening a rule — more unlocks, longer ones, easier math — takes effect at midnight, never in the moment you want it. Tightening one takes effect right away. PRO is about setting your own terms in advance, not about getting out of them later. PRO is an auto-renewing subscription, monthly or yearly. You can cancel anytime in your Apple Account settings. Deciding once is easier than deciding fifty times a day. Set the rule tonight, and take back the hours that were quietly going missing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Key features - Math challenge to unlock apps - Scheduled app blocking - Usage limit blocking - Temporary unlocks - Essential app exceptions - Multiple rule support (Pro) ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Challenge Pack Yearly | $19.99 | per year | | Challenge Pack Monthly | $2.99 | per month | ## Frequently asked questions about DrillLock ### What is DrillLock? DrillLock is a productivity app designed to help users focus by requiring them to solve a math problem before accessing distracting applications. It aims to create a deliberate pause between the impulse to open an app and the action itself. ### How does DrillLock work? When you attempt to open a blocked app, DrillLock presents a math challenge. Successfully solving it allows temporary access, while failing to solve it or choosing not to prevents access, helping to maintain focus on study or work. ### Does DrillLock have ads? No, DrillLock does not contain advertisements. The app is ad-free, ensuring an uninterrupted user experience focused on productivity. ### What are the subscription options for DrillLock? DrillLock offers a PRO subscription that unlocks multiple rules, allowlist mode, a daily temporary unlock limit, and harder math challenges. Subscription plans include 'Challenge Pack Monthly' for $2.99 with a 7-day free trial and 'Challenge Pack Yearly' for $19.99 with a 14-day free trial. ### Can I customize which apps are blocked by DrillLock? Yes, DrillLock allows for customization. You can set up scheduled locks, usage limits, and the PRO subscription enables allowlist mode for more granular control over which apps are blocked or permitted. ### Is DrillLock available on Android? Based on the provided data, DrillLock is currently only supported on iPhone. Its UI and behavior may also depend on iOS specifications. ### How often is DrillLock updated? The latest version of DrillLock is 2.0.0, last updated on August 1, 2026. This indicates a recent update, suggesting ongoing development and maintenance. ### What is the age rating for DrillLock? DrillLock has an age rating of 4+, making it suitable for a wide range of users, including younger students and adults. ## Version history (last 5 releases) ### 2.0.8 — 2026-09-28 TRY THE LOCK BEFORE YOU SET IT UP Pick apps to block and DrillLock locks them for one minute, for real. Solve one math problem to unlock. Then choose when blocking runs. Or skip ahead. SEE WHAT EACH CHALLENGE ASKS • Easy (free): three 2-digit additions • Hard: five 3-digit additions • Typing: copy a short phrase exactly • PIN: enter the PIN you set earlier Tap Hard, Typing, or PIN for a preview. ### 2.0.7 — 2026-09-23 TEMPORARY UNLOCK IS NOW THREE TIMES A DAY Solve the math and an app still opens for ten minutes. What's new is the count: three a day. After the third, the challenge stops appearing until midnight and the lock holds. An unlock you could repeat all day wasn't a lock. THE RULES YOU'VE ALREADY SET KEEP RUNNING Creating a Time Limit lock or a second rule now takes PRO. What you already set up keeps running — this update switches nothing off. PRO: SET YOUR OWN UNLOCK RULE Pick one to ten a day, at five, ten, twenty, or thirty minutes each. Loosening a rule takes effect at midnight, not in the moment you want it. Tightening is immediate. No more PRO prompts after an unlock or during a lock. ### 2.0.6 — 2026-09-05 This update brings stability improvements and minor bug fixes. ### 2.0.5 — 2026-09-01 You now get a heads-up when your PRO period ends. WHEN PRO ENDS, YOU'LL KNOW PRO features like multiple rules and allowlist mode stop working once your PRO period is over. Until now that could happen quietly, and you'd find out only when a rule you counted on wasn't running. DrillLock now sends you a notification instead. WORDING FIXES • Spanish: Screen Time now appears as Tiempo de uso, the name Apple uses in the iPhone Settings app, so the permission step is easier to follow. • Simplified Chinese: replaced text that was still showing in English and fixed wording that said the opposite of what it meant. • Removed unused text from all 13 languages. ### 2.0.4 — 2026-08-26 Fixed the weekday selector so all seven days stay readable instead of being cut off. Plus small fixes throughout. ## Apps similar to DrillLock | App | Rating | Price | Category | | --- | --- | --- | --- | | [NumLock: Math Screen Lock](https://appshunter.io/ios/app/numlock-math-screen-lock/id6761402140) | — | Free | Productivity | | [MathBlocker: Stop Scrolling](https://appshunter.io/ios/app/mathblocker-stop-scrolling/id6761896675) | 5.0 (1) | Free | Productivity | | [Stop Doomscrolling: Mathunlock](https://appshunter.io/ios/app/stop-doomscrolling-mathunlock/id6758373394) | — | Free | Productivity | | [PushUp Time: App Blocker](https://appshunter.io/ios/app/pushup-time-app-blocker/id6749405784) | 4.7 (11,549) | Free | Productivity | | [minimalist phone ® Block Apps](https://appshunter.io/ios/app/minimalist-phone-block-apps/id6742103871) | 4.6 (613) | Free | Productivity | | [Unrot: Screen Time Battery](https://appshunter.io/ios/app/unrot-screen-time-battery/id6746537171) | 4.7 (56,839) | Free | Productivity | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*