Text you submit to the humanizer or the detector is transmitted over an encrypted connection and processed to produce your result. We do not sell your personal data.
The free tools are different and worth understanding separately. The word counter, case converter, text cleaner, sentence rhythm tool, diff checker, word frequency tool, character counter and AI word finder all run entirely in your browser. Nothing is uploaded, there is no account, and closing the tab is the end of it. That promise holds as long as none of those tools grows a network request, which is a constraint we hold ourselves to in the code.
The prompt library is a static page — nothing you type is processed at all.
If you are pasting work you do not own, or material covered by a confidentiality obligation, read the privacy policy properly rather than taking a summary. That applies to every tool in this category, not only ours.
The privacy policy is the authoritative document on retention, lawful basis and your rights. This article is a plain-language summary and the policy wins in any disagreement.
Questions about data handling that the policy does not answer should go to support@humanflow.pro, and we will answer specifically rather than pointing you back at the policy.
A practical note for anyone weighing this up: the free browser tools are genuinely the safest option in this category, because there is no server involved at any point. If you have text you would rather not transmit anywhere, the counters, cleaners and analysers all work on it without a network request.