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Drowser vs OnStop2FinishAndRemoveTask: catalog facts
Drowser	OnStop2FinishAndRemoveTask

Best for: Stopping background apps on a rooted Android phone	Best for: Android users who want selected apps closed as soon as they leave them
Free Free and open source under GPL-3.0.	Free Free and open source under the Apache 2.0 licence.
Android	Android
Automatically stops chosen apps when screen off Simple, focused purpose Can reduce background battery drain	Closes only the apps you register Runs automatically from a foreground service Small, single-purpose app
Requires root Force-stop can make apps misbehave Android only	Requires Shizuku to be installed and running Documentation is partly in Japanese
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: Apache-2.0
No account needed	No account needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for Drowser gitlab.com/juanitobananas/drowser play.google.com/store/apps/details f-droid.org/packages/com.jarsilio.android.drowser Catalog checked October 2, 2026	Official website Full listing and sources Sources for OnStop2FinishAndRemoveTask github.com/takusan23/OnStop2FinishAndRemoveTask f-droid.org/packages/io.github.takusan23.onstop2finishandre… Catalog checked October 2, 2026

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