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Island vs Blocker: catalog facts
Island	Blocker
Best for: Android users who want to contain permission-hungry or constantly waking apps	Best for: Advanced Android users who want to cut trackers and background services from apps
Free The homepage does not mention any cost.	Free Free and open source.
Android	Android
Blocks access to contacts, photos and call logs even with permissions granted Freezes apps to stop their background behaviour All 4 strengths for Island Blocks access to contacts, photos and call logs even with permissions granted Freezes apps to stop their background behaviour Runs a second copy of an app with a different account No root required	Disables trackers, services and receivers inside apps Supports the Intent Firewall as well as the package manager All 3 strengths for Blocker Disables trackers, services and receivers inside apps Supports the Intent Firewall as well as the package manager Active development
Device-bound data such as SMS and IMEI remains accessible Apps must be cloned into Island before they are isolated	Needs root access or Shizuku Disabling the wrong component can break an app
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for Island island.oasisfeng.com play.google.com/store/apps/details Catalog checked September 24, 2026	Official website Full listing and sources Sources for Blocker github.com/lihenggui/blocker f-droid.org/packages/com.merxury.blocker Catalog checked October 1, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.