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Island vs Hail: catalog facts
Island	Hail
Best for: Android users who want to contain permission-hungry or constantly waking apps	Best for: Android users who want to stop unwanted or rarely used apps from running
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	Freezes, hides or suspends apps without root Can also uninstall apps All 3 strengths for Hail Freezes, hides or suspends apps without root Can also uninstall apps Free and open source
Device-bound data such as SMS and IMEI remains accessible Apps must be cloned into Island before they are isolated	Android only Setup is more involved than a typical app
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License not stated
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 Hail github.com/aistra0528/Hail f-droid.org/packages/com.aistra.hail Catalog checked September 23, 2026

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