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Permission Slip vs datarequests.org: catalog facts
Permission Slip	datarequests.org
Freemium Free for individual requests; Permission Slip Plus is a paid tier with data broker…	Free Free of charge, run by a non-profit association.
Android, iOS	Web
Sends deletion and do-not-sell requests from a phone Tracks the status of each request	No registration needed Database of company contact details
Mobile only Data broker opt-outs require the paid Plus tier	Only useful for rights under the GDPR You still send and track requests yourself
Downloadable app	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	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.