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Dark Box: Math App Lock icon

Dark Box: Math App Lock

Screen Time Limit & Blocker
Jesus zamudio parra · Productivity
View on App Store ↗
★ 5.00average rating
1ratings
+0new ratings, last 7 days
—not in top charts now

Ratings breakdown

★★★★★
100%
★★★★
0%
★★★
0%
★★
0%
★
0%
🔒 Rating history21 days of daily rating and rating countGet Pro access

App info

Developer
Jesus zamudio parra
Category
Productivity
Released
Oct 1, 2026
Version
1.2 (Oct 20, 2026)
Price
Free
Size
4.2 MB
Requires
iOS 26.5
Age rating
4+
Languages
English

In-app purchases

Dark Box Pro (Monthly)$6.99
Dark Box Pro (Yearly)$39.99
Current prices, App Store US.
🔒 Price history9 snapshots: when prices changed and new plans appearedGet Pro access

About Dark Box: Math App Lock

Put the apps that steal your time in a box. To open one, solve two math problems first. The more you've used them today, the harder the math. Dark Box locks them with Screen Time. Need to get something done? Start a focus session and the whole box stays shut while the timer runs. FOCUS SESSIONS, FREE - 10, 25, 50 or 90 minutes, or your own, up to 4 hours. - Normal: a break costs two math problems. End early and the minutes so far still count. - Deep Focus: no breaks, no ending early, no changing the box. Only your emergency pass gets through. HOW IT WORKS - Pick the apps or websites that pull you in, and a daily limit from 15 minutes to 4 hours (weekends can differ). - Tap Solve to unlock, take 10 minutes, 20 or up to 4 hours, and it locks again by itself. Two apps can be open at once. WHEN YOU OPEN A LOCKED APP It suggests something better to do. During a session or schedule, it says…
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