TrustSign
Sign PDFs on iPhone and iPad with your smart card or USB token (qualified e-signature).
About
TrustSign signs PDF documents using your own smart card or USB token, plugged into your iPhone or iPad through a card reader. Everything happens on the device: the document is signed there, with the certificate stored on your card.
There are no accounts, no analytics, no advertising and no tracking, and I run no servers for it. The PDF never leaves the device unless you share the signed copy yourself.
Features
Your own card or token
Signs with the certificate on your smart card or USB token, read locally through a card reader.
Everything on the device
The document is signed on your iPhone or iPad. It leaves only when you share the signed copy from the Share sheet or Files.
Optional trusted timestamp
An RFC 3161 timestamp can be added to the signature. It is on by default and can be switched off.
PIN used once
Your card PIN unlocks the card for the current signature only. It is not stored, logged or transmitted.
No tracking
No accounts, analytics, advertising or tracking, and nothing is collected by the developer.