DeepSign
Sign & send PDFs and Contracts
About
Digitally sign and send any document or contract securely and legally from your phone. Verify identities for free with an integrated app. Track signing progress in real-time.
What's New in DeepSign
1.1.3
May 11, 2026
• Support for iOS 26 • Improved placement and display of signatures • Various bug fixes for login, signing and document refresh
MoreIn-App Purchases
$6.99
3 QES Signatures
3 QES Signatures for DeepSign
Developer apps
FAQ
What is DeepSign?
DeepSign is a mobile application that allows users to digitally sign and send PDFs and contracts. It provides legally valid eSignatures compliant with Swiss and EU regulations.
Is DeepSign free to use?
DeepSign offers free signatures upon signup, including 5 Simple Electronic Signatures (SES) and 2 Qualified Electronic Signatures (QES). Additional signatures can be purchased within the app or invoiced to organizations.
Does DeepSign have ads?
No, DeepSign does not contain advertisements. The app is free to download and use, with optional in-app purchases for additional signature credits.
How does DeepSign ensure signature validity?
DeepSign's eSignatures are legally valid according to Swiss (ZertES) and EU (eIDAS) regulations. The app also offers free integrated DeepID for remote identity verification, enhancing security and legal standing.
What devices does DeepSign support?
DeepSign is available for iPhone and iPad devices. The app is rated for ages 4 and up.
How often is DeepSign updated?
The latest version of DeepSign is 1.1.3, last updated on May 11, 2026. Updates ensure the app remains reliable and compliant with current regulations.
Where is my data stored with DeepSign?
Your data is securely stored in Switzerland-based data centers through an ISO 27001:2013-certified cloud solution. You and your co-signers have full control over your personal data.
What types of electronic signatures does DeepSign offer?
DeepSign offers both Simple Electronic Signatures (SES) for low-liability documents and Qualified Electronic Signatures (QES) for high-liability documents, which are equivalent to handwritten signatures under Swiss and EU law.
