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Unlimited document signing for a flat monthly price.

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© 2026 Evenseal. All rights reserved. Evenseal provides electronic-signature software, not legal advice.

How to Sign a PDF on iPhone or Android

No app to install. Open the PDF in your phone’s browser, sign it with your finger, and download it — it works the same on iPhone and Android.

Sign a PDF on your phone
  • No app install
  • Sign with your finger
  • Your file never leaves your phone

Why sign on your phone instead of a computer?

Most PDFs that need a quick signature — a delivery form, a rental application, a waiver someone emailed you — show up on your phone first. Signing there means you don’t have to forward the file to a laptop, find a printer, sign on paper, and scan it back in. The whole thing happens on the device already in your hand.

Because it’s a page in your mobile browser rather than a native app, it works the same way on an iPhone in Safari and on an Android phone in Chrome — no separate iOS and Android versions to keep updated, and no App Store or Play Store download standing between you and the document.

How it works

  1. 1

    Open the page on your phone

    Visit Evenseal in Safari, Chrome, or any mobile browser — iOS or Android. Nothing to install from the App Store or Play Store.

  2. 2

    Tap to open your PDF

    Pick the file from your Files app, Google Drive, Photos, or wherever it landed — an email attachment, a download, a scan.

  3. 3

    Draw your signature with your finger

    Sign directly on the screen with your fingertip or a stylus. Drag it, and a date or text if you need them, onto the page.

  4. 4

    Download the signed PDF

    Save it back to your phone or share it straight from the browser — by email, Messages, WhatsApp, or AirDrop.

Built for a touchscreen, not shrunk to fit one

Signature fields, buttons, and the page itself are sized for a thumb, not a mouse cursor — no pinch-zooming to hit a tiny checkbox. Draw your signature with a finger or a stylus, drag it into place, and it drops exactly where you release it.

When you’re done, save the signed PDF to your phone or share it directly from the browser’s share sheet — by email, Messages, or whatever app you already use to send files.

Need someone else to sign from their phone too?

Send a document for signature and get back a sealed, certified copy with a verifiable audit trail — recipients sign from their own phone, no account required. Free to start; unlimited sending is one flat price with no per-envelope fees, ever.

Get started freeSee pricing

Frequently asked questions

Do I need to install an app to sign a PDF on my iPhone?+
No. The tool runs in your phone’s browser — Safari on iPhone, Chrome on Android, or any modern mobile browser. There is nothing to download from the App Store or Play Store and nothing to update later.
Does this work the same on Android as it does on iPhone?+
Yes. It’s a web page, not a native app, so the same tool works identically on iPhone, iPad, and any Android phone or tablet — just open it in the browser you already have.
Is my signature drawn with a finger legally valid?+
For most everyday agreements, yes — a signature you draw with your finger or a stylus is a valid electronic signature under laws like the US ESIGN Act and UETA, the EU and UK’s eIDAS rules, and equivalents in many other countries. This free tool creates a self-signed document without an audit trail. Are electronic signatures legally binding?.
Does my PDF get uploaded anywhere when I sign it on my phone?+
No. The file is opened, signed, and saved on your device inside your browser — it’s never sent to a server. That holds whether you’re on mobile data or Wi-Fi.

Related

  • Sign a PDF online — free
  • Sign a PDF Without Creating an Account
  • How to Add a Signature to a PDF (No Printing or Scanning)
  • How to Sign a PDF on a Mac
  • Pricing