Sign, draw and watermark the real you on email and social media networks.

Deliver the authentic you, with our USPTO patented and real time signature process on every digital communication.

The Real You:
- With every social signature you help take a bite out of the trend in fakes.
- Verify your real time, real deal signature with our easy keyboard and seal of authenticity, now ready for over 300 email networks
- Biometric validation delivers the social seal of authenticity on your Twitter and Facebook posts

Authentic Signing:
- The SignID application becomes part of your iOS keyboard for delivering the real you in social and mobile communications.
- Show your style and ownership to whatever you post in your digital life.

Works Everywhere:
- SignID was developed by experts in media and identity, now made available to virtually every smart phone user in the world.
- Enjoy the first version of SignID today, as a native part of keyboard and digital life.

Improve Your Identity and Personality:
- Real time creativity from the real you
- Personalized seals and professional editions coming soon.
- Be part of the movement to reduce fake and sign your style on social and email communications

What's New

Version 1.2

Easier set up
iOS 6 fix

Ratings and Reviews

5 out of 5

7 Ratings

7 Ratings

Signatures as a service - cool!

lettrs fan

If everyone originally signed their emails and social posts with this app then the world of fake would take a major blow. Awesome! It works on everyone of my email services and most social networks so far. It’s like the Docusign for all social and digital communications, working on Facebook and Twitter too.

Great app!


What an awesome idea. Validating your signature allows you to personalize a text or email. I highly recommend you all to download this app.

Total confidence


This app is so easy to use and one that I use very frequently. I always feel confident knowing that my mobile signature is verified by SignID.


Seller LLC
67.4 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 9+ for the following:
Infrequent/Mild Mature/Suggestive Themes
© lettrs, Inc


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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