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Keepsign PDF, in a few lines.
Keepsign PDF is a PDF app for iPhone, iPad and Mac that saves without breaking signatures or dropping content, checks every save and gives you a receipt. It runs entirely on the device, needs no account, and Pro is a one-time purchase.
01 Key facts
The short version.
| Name | Keepsign PDF |
|---|---|
| Platforms | iPhone and iPad (iOS and iPadOS 17 or later), Mac (macOS 14 or later). One universal app. |
| Price | Free download. Keepsign Pro US$29.99, one-time, with Family Sharing. Keepsign PDF for Teams US$49.99 per licence (later). |
| What’s different | Incremental saving that keeps signatures valid; a save receipt with SHA-256; a warning before a signature would break; “What changed?” for received PDFs; on-device AI that checks its quotes; certificate (PAdES) signatures on iPhone and iPad. |
| Privacy | No account, no analytics, no server. Documents are processed on the device. |
| Availability | Coming soon to the App Store. |
| Contact | support@keepsignpdf.com |
02 Images
Screenshots and icon.
Free to use in coverage of Keepsign PDF. Please don’t alter the icon.
Get one email when Keepsign is out
One message on launch day, then we delete your address. No newsletter. How we handle it.