Compare software

Aer vs Safe Space: catalog facts
Aer	Safe Space
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0 licence.
Android	Android
Keeps files out of other apps' view Can store private files on an SD card	Keeps files out of reach of other apps Uses Android's built-in storage encryption
Still in development, with a warning about possible data loss Android only	Relies on system encryption rather than its own Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
Not stated if an account is 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 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.