App blocker and screen time tracker. Block apps, websites, reels and shorts.
About this app
Curbox (Digipaws) is a free and open source app blocker and screen time tracker built for digital wellbeing and a real digital detox. As an app blocker it lets you block apps, websites, reels and shorts, then watch your screen time drop and your focus come back.
Block apps and websites
• App and Website Blocker: block any distracting app or website completely • URL Path Blocking: block just one part of a site, like m.youtube.com/shorts, while the rest of YouTube still works • Short Form Content Blocker: shut off Instagram Reels and YouTube Shorts so the feed stops pulling you back • Tamper Protection: make it difficult to uninstall curbox or change configurations
Hide only the distracting parts
Granular UI Hiding lets you remove the trap inside an app without losing the app. Curbox lays a clean overlay over the exact area you pick, so everything else keeps working. For example, hide the YouTube home feed but keep search, blank out the Instagram explore tab, or the entire home feed while allowing posts from friends. You stay in control of what you see.
Stay focused
• Focus Mode: pause apps and websites for a set time so you can study or work in peace • Scheduled DND: turn on Do Not Disturb automatically at the hours you set • App Specific Grayscale: drain the color out of Instagram while your Camera stays full color, so dull apps lose their pull • Usage Based Limits: block an app or site after a set amount of use, like WhatsApp after 1 hour • Time Based Access: allow an app only during set hours, like WhatsApp from 7 AM to 9 PM • Mindful Messages: gentle nudges that run as overlay when you use an app
See your time
• Usage Analytics: clear breakdowns of how long you spend in each app and website • Focus Statistics: track your focus sessions and your progress over time • Live Scroll Counter: a real time count of how many short videos you have scrolled • Session Timer: a live timer of how long the current app has been open • Home Screen Widgets: keep your stats and quick controls on your home screen
Choose how hard it is to give in
When you try to open something outside its schedule, you decide what it takes to get back in.
• Strict Blockade: no access at all • Timed Unlocks: each unlock lasts a short set time, like 5 minutes • Dynamic Unlocks: pick the unlock length yourself each time • QR or Barcode Unlock: scan a real barcode, like one on a book, so you have to get up and move • Sentence Retyping: type out a full sentence before the app will open • Unlock Limits: cap how many unlocks you get every few hours
Curbox is the app blocker for anyone who wants to block distracting apps and websites, cut screen time, and take back their focus. Free, open source, no ads.
Licensed under GPL-3.0-or-later, by Nethical.
What's New in v2-fdroid
Imported from the F-Droid repository index.
- - Curbox API: other apps can now ask Curbox to block things, with your approval.
- - Settings change delay, so weakening a block takes time
- - Stronger anti uninstall protection
- - Snapchat spotlight and story blocking
- - Grayscale now use WRITE_SECURE_SETTINGS
- - App language picker, plus Arabic, Chinese, Japanese, Portuguese, Russian
Version history
Jul 13, 2026 · 7.7 MB · Android API 26–34 · code 2
Imported from the F-Droid repository index.
- - Curbox API: other apps can now ask Curbox to block things, with your approval.
- - Settings change delay, so weakening a block takes time
- - Stronger anti uninstall protection
- - Snapchat spotlight and story blocking
- - Grayscale now use WRITE_SECURE_SETTINGS
- - App language picker, plus Arabic, Chinese, Japanese, Portuguese, Russian
SHA-256 951e8b202151233b8235fc4a0f2b9f122327236952d61b18a1330be58fff1e87
Jun 22, 2026 · 7 MB · Android API 26–34 · code 1
Imported from the F-Droid repository index.
SHA-256 9646ae1a2853b47b2b27ebdff1c0911091fb3a37d412f01c0a018784593d5603
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be neth.iecal.curbox is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1-fdroid is the last build before it. Android will not install an older version code over a newer one, so you must uninstall App Blocker: Curbox Detox first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of App Blocker: Curbox Detox, and a listing is removed when the evidence for it stops holding up.
Get App Blocker: Curbox Detox
Every source we list for neth.iecal.curbox is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
951e8b202151233b8235fc4a0f2b9f122327236952d61b18a1330be58fff1e87
Signing certificate
c35601755756ecd887cf3f154d45a5b87c8dd19b6a044d411a7739e2b88c2de9
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.