The best e-signature app for iPhone, for sending as well as signing

Three jobs an iPhone signing app should do

1. Send for signature: pick a PDF or scan, add the signers, place the fields, send. The signers shouldn't need the app.
2. Sign in person: turn the phone around and let a customer sign on the screen, without them poking through your other documents.
3. Scan paper: turn a signed page, an ID or a receipt into a clean PDF without a flatbed scanner.

Five iPhone apps compared

SignMaster: scan, sign in person, send

The SignMaster app for iPhone and iPad puts all three jobs in one place. It scans with Apple's document camera, which finds the page edges on its own and makes the text searchable. Sign in person fills the screen and only your Face ID, Touch ID or passcode ends it. Sending starts from a scan, a file or a template, and Alana can fill the fields for you to check. Your envelopes and templates are the same on the web. It's new this year, so it has less history behind it than DocuSign or Adobe, and it doesn't sign or send offline.

DocuSign: the most established

DocuSign's app runs on iPhone, iPad and Android and scans with the camera. A free account can send three signature requests, and signing is always free. Paid plans start with Personal at $10 a month billed yearly, with 5 envelopes a month. In-person signing needs Standard at $25 per user a month billed yearly. It's the safe choice if your clients already expect DocuSign emails.

Adobe Acrobat: if you live in Acrobat on the Mac

Adobe's e-signature page says you can send documents for signature from Acrobat on any desktop or mobile device, and its request-signature page says a free Adobe account can send two e-signature requests every 30 days. Acrobat Pro for teams is $23.99 per license a month on an annual plan. Adobe's July 2026 announcement says in-person signing comes with Acrobat Sign Solutions, not with Acrobat Standard or Pro on their own. Best for people who already edit PDFs in Acrobat all day.

Signeasy: strong on phones, including offline

Signeasy lists iPhone, iPad and Android apps and offline signing on every plan, plus biometric verification in its mobile features. Personal is $10 a seat a month billed yearly but caps you at 5 emailed contracts a month; in-person signing starts on Business at $20. A good pick if you sign in places without a signal.

signNow: low price, in-person on the phone

signNow's help center describes in-person signing in its iOS app: open the document, start in-person mode and pass the phone to each signer. Business is $8 a month billed annually or $20 month to month, and that one price covers unlimited users and 100 signature invites a year. Good value if your volume is light.

Picking by how you work

• You meet customers face to face: SignMaster or Signeasy, for in-person signing without a pricey tier.
• Your clients expect a familiar name: DocuSign.
• Your day is spent in Acrobat: Adobe Acrobat Pro.
• You send a few documents a month and want the lowest bill: signNow Business on annual billing.
• You often sign with no signal: Signeasy, which lists offline signing on every plan, Personal included.