What is the best app for signing PDFs?
iContract is the best free app for signing PDFs (no account required, draw or type signature, downloads instantly). For paid alternatives, Adobe Acrobat Sign integrates natively with PDFs, while DocuSign offers the broadest enterprise features.
Signing PDFs no longer requires printing, signing, scanning. The best PDF signing apps:
iContract — completely free, no account needed. Upload your PDF at icontract.pro/sign-free, draw or type your signature, place it on the page, download the signed PDF. Includes audit trail.
Adobe Acrobat Reader (free) — built-in 'Fill & Sign' feature. Good for signing your own PDFs but limited for sending to others.
Adobe Acrobat Sign ($14.99/mo) — full e-signature workflow with templates, sending, tracking.
DocuSign — enterprise standard. Strong audit trail, complex workflows, pricier.
Dropbox Sign — clean UX, integrates with Dropbox.
Smallpdf / iLovePDF — free single-signer PDF signing, good for one-off use.
Mobile signing: iContract works in any mobile browser. Adobe Sign and DocuSign have native iOS/Android apps. All let you sign with your finger.
Legal validity: PDFs signed via these tools are legally binding under ESIGN/eIDAS. The audit trail (timestamp, IP, signer email) is what makes them court-admissible.
For occasional PDF signing, use iContract free. For frequent business signing with templates, choose one of the paid options based on your existing software stack.
Create your own contract in 2 minutes
iContract drafts a custom, legally sound agreement for free. Start drafting →