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ProcrastiLearn vs PlugBrain: catalog facts
ProcrastiLearn	PlugBrain
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Gates chosen apps behind a flashcard review Spaced repetition with Anki import	Math challenges add friction instead of a hard block Difficulty adapts to how often you open the apps
Android only AI translations are optional and depend on an external service	Android only No releases published on the GitHub repository
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.