Turn your screen time into brain time
The screen time blocker that makes you smarter. Solve mental math to unlock your apps and train your brain every time you pick up your phone.
The screen time blocker that makes you smarter. Solve mental math to unlock your apps and train your brain every time you pick up your phone.
The average person picks up their phone over 150 times a day.
What if every app unlock became brain training instead of mindless scrolling?
How It Works
Step 1
Pick which apps to block on your iPhone. Block social media, games, or anything that eats your time.
Step 2
Mental math challenges stand between you and your distractions. A quick brain training session before every unlock.
Step 3
Apps unlock for the time you choose — 15 min, 30 min, 1 hour, or until midnight.
Features
25 levels that adjust to your skill. Start simple, level up to multi-step equations.
Build a daily habit. Your streak motivates you to never miss a day.
Choose 15 min, 30 min, 1 hour, or until midnight. You control your limits.
Track accuracy, solve time, and progress. Watch yourself get sharper over time.
No accounts, no data collection. Everything stays on your device.
Not a parental control app. It's a productivity app you choose for yourself.
See It In Action
Pricing
FAQ
No. NumLock is a self-imposed productivity tool designed for adults. You set it up for yourself, you control the settings, and you choose which apps to block.
There's an emergency unlock option for when you truly need immediate access, but using it resets your streak. It's designed to keep you honest.
Yes, fully offline. NumLock doesn't require an internet connection and no data ever leaves your device.
Your data stays on your device. App blocking stops until you resubscribe, but your stats and progress are always preserved.
Any app on your iPhone. NumLock uses Apple's Screen Time API, so you can block social media, games, browsers, or any other app you choose.
Every unlock is a chance to get sharper. Try the brain training app blocker free for 7 days on iPhone.
Download on the App Store