Looking for a good signature app

[Amy Furlong]

I'm looking for a signature app that I can use to create a signature that I can attach to many different formats such as SMS, Whatsapp messages, gmail messages, and Microsoft Exchange messages. I see there are several out there on Google Play and I'm pretty sure the Note 3 doesn't have one built in even with the S-Pen...does anyone know which app might have the flexibility for you to create and use that signature in multiple applications like the ones I've mentioned?