Sign PDF Offline · safeBubble
Android app by SAFEBUBBLE. Productivity · SAFEBUBBLE
- Store rating
- Unknown
- Store rating count
- Unknown
- Download price
- 4.99 USD
- In-app purchases
- Not listed in captured metadata
- Version
- 1.0.0
- Listing last refreshed
- 2026-09-17
View the original store listing
Store description excerpt
Sign a PDF offline, with your own handwritten signature, on your phone. No account, no sign-in, no subscription and no internet connection — safeBubblePDFsign works in airplane mode, on a plane, or in a room with no signal. YOUR REAL SIGNATURE, FROM A PHOTOGRAPH Photograph your signature on a piece of paper. The app lifts the ink off the page — removing the paper, the shadow and the colour cast — and keeps the shape, pressure and taper of the strokes exactly as you wrote them. It never generates or reconstructs handwriting, and there is no drawing tool, because a drawing tool would break that promise. Clean it up by hand if you need to: erase a stray mark, or restore a stroke the camera nearly missed. Nothing is ever drawn for you. SIGN THE DOCUMENT, KEEP THE ORIGINAL Open a PDF, place your signature where you want it, resize it, and export. Your original document is never modified — signing always produces a new file, and the app checks the result before offering it to you. Text, forms and page layout are preserved; nothing is flattened or rasterised. Initials and a handwritten date work the same way: photograph them once, and they join your signature library to be placed like anything else. IT WORKS COMPLETELY OFFLINE There is no account, no sign-in, no subscription, no ads and no tracking. The Android app ships without the internet permission, so Android itself refuses it a network socket. It cannot upload your documents — enforced by the operating system, rather than promised in a policy. FEATURES • Sign a PDF offline — no internet connection needed, ever • Your real handwritten signature, scanned from a photo of paper • Manual cleanup: erase marks, restore strokes; nothing is drawn for you • Blue or black ink • A library of signatures, multiple pages, one export • Password-protected PDFs open, and stay protected • Large documents are fast: a 200-page PDF signs in a fraction of a second • The exported file begins with your source file byte for byte • Light and dark themes, and 200% text scaling • One purchase, once. No subscription, no in-app purchases, no ads, no account. WHO IT IS FOR Anyone who has to sign a form and would rather not upload it — and anyone whose employer or regulator does not permit documents to leave the device at all. safeBubblePDFsign places an image of your handwritten signature on a PDF. It is not a cryptographic digital signature, it is not certificate-based, and it makes no claim about legal validity in any jurisdiction.
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