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Clearspace vs Curbox: catalog facts
Clearspace	Curbox
Freemium Free to download; check the app stores for current plan details.	Free Free and open source under the GPL 3.0 or later.
Android, iOS, Browser extension	Android
Adds a pause before opening distracting apps instead of only blocking them Available on iOS and Android	Blocks Reels and Shorts without blocking the whole app Wide choice of unlock challenges, including NFC and QR codes
Closed source Pricing details are not stated on the homepage	Android only Self-imposed limits can still be worked around by a determined user
Downloadable app, Browser extension	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
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.