Compare software

Island vs Shelter: catalog facts
Island	Shelter
Best for: Android users who want to contain permission-hungry or constantly waking apps	Best for: Separate selected Android apps into a work profile
Free The homepage does not mention any cost.	Free The open-source software is available without a license fee. Hosting, hardware and external services are separate.
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	Uses Android's built-in profile isolation for cloned or separate apps.
Device-bound data such as SMS and IMEI remains accessible Apps must be cloned into Island before they are isolated	Requires a device that supports Android work profiles.
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License: GPL-3.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
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 Shelter github.com/PeterCxy/Shelter github.com/PeterCxy/Shelter/blob/master/LICENSE Catalog checked September 22, 2026

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