Sign and stamp any PDF, then send it straight back. Every signed file carries a cryptographic seal anyone can check free in Signatur. Your first 2 documents are free.
Sign and stamp it the moment it arrives — and prove it hasn't changed since.
Signed files carry a cryptographic seal. Whoever you send one to opens it in Signatur and checks it for free — no account, no purchase: if a single word changed, the check says so.
Signatur puts signing, form filling, verification and PDF editing in one app. Quotes, approvals, onboarding papers, agreements — any document that needs your signature gets signed and sent back in minutes. No printer, no scanner.
LEARN IT IN THREE MINUTES
A Guide & Practice file ships inside the app: page 2 is a practice contract. Sign it, fill it, verify it — then sign the real thing.
SIGN LIKE ON PAPER
• Handwritten signature, stamp and date — drop them exactly where they belong
• Optional Face ID or Touch ID confirmation before you sign
• Seam stamp for multi-page documents, one mark across every page pair
• Form fields detected automatically — name, date, company filled in one pass
EVERY DOCUMENT CAN BE VERIFIED
• Signed files carry an invisible watermark — if anything changes, one check reveals it
• Verdicts in plain language: an original is an original, a modified file says so
• Signatures made with other tools are listed, never judged — no false accusations
• Verifying stays free forever for everyone you send files to — no account, no purchase
MORE THAN PREVIEW
• Merge PDFs, password-protect files
• Redact sensitive content for real — removed, not covered
• Page tools: delete, rotate, reorder
• Scan paper with the camera, stitch chat screenshots into a PDF
ONE APPLE ACCOUNT, EVERY DEVICE
Buy Pro with your Apple Account and it unlocks on iPhone, iPad and Mac. Sign on your phone, keep editing on your Mac.
WHERE YOUR FILES GO
Signing, filling, watermarking and verification all happen on your device. If you turn on iCloud sync, your drafts and signed copies travel between your devices through your own iCloud account — they never reach us, and we run no server that holds your documents. A trusted timestamp is an optional outside request you switch on yourself. Signing and verifying work offline.
SIGNATUR PRO
Your first 2 documents are free. After that:
• Yearly — billed yearly, cancel anytime
• Lifetime — pay once, keep it forever, no subscription
• Monthly — flexible, cancel anytime
Reading, verifying and forwarding stay free forever. Any free trial is shown in the app before you're charged.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
5.0
out of 5
2 Ratings
Redesigned for iPhone Duo: open the phone and the document and the signing pad sit side by side.
• When you sign by hand on the inner display, the pad sits next to the document instead of covering it. The box you are signing is outlined, and your strokes appear in it as you write.
• Stand the phone up like a laptop: the document is on the upper half, the pad on the lower half.
• Half open like a book: the document shows two pages side by side, with the gap between them on the fold.
• Close or open the phone halfway through a signature and every stroke stays.
• With no document open, the inner display shows previews of your recent documents. The full-screen button beside a document hides the document list; tap it again to bring the list back.
• On the outer display, Sign, Fill and More move into the vertical toolbar, with Sign at the bottom, under your thumb.
Version 1.93
The developer, GREP ADVISORY PTE. LTD., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
GREP ADVISORY PTE. LTD.
Size
15.4 MB
Category
Business
Compatibility
Requires iOS 17.4 or later.
iPhone Requires iOS 17.4 or later.
iPad Requires iPadOS 17.4 or later.
Mac Requires macOS 14.0 or later.
Apple Vision Requires visionOS 1.1 or later.
Languages
English and 8 more
English, Arabic, French, German, Japanese, Russian, Simplified Chinese, Spanish, Traditional Chinese