Best Add Signature To Digital Documents Apps

250+ iOS apps curated and reviewed

4.8 avg rating

20 free apps

Updated August 2026

If you already know Docusign, this is the deeper bench. 250+ add signature to digital documents apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Add Signature To Digital Documents Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Docusign - Upload & Sign Docs	Free	4.9★ (825K)	No	Yes	Sep 2026
2	Signature: Fill and Sign PDF	Free	4.8★ (111)	Yes	Yes	Sep 2026
3	Genius Sign: PDF doc signature	Free	4.9★ (12K)	No	Yes	Aug 2026
4	SignNow: e-Signature app	Free	4.5★ (18K)	No	Yes	Sep 2026
5	Sign Documents PDF Signature	Free	—	No	Yes	Aug 2026
6	Signature Scanner - SignaScan	Free	5.0★ (1)	No	Yes	Aug 2026
7	Signature Maker Sign PDF	Free	—	No	Yes	Jul 2026
8	Signature PDF: eSign Documents	Free	—	Yes	Yes	Aug 2026

Top Picks for Add Signature To Digital Documents

#1

Docusign - Upload & Sign Docs by Docusign

Sign PDFs & Contracts

Editor's Choice

📊 Productivity

4.9😊(825K ratings)

FreeIn-App Purchases

#31in Productivity

Docusign - Upload & Sign Docs screenshot 1

Docusign - Upload & Sign Docs screenshot 2

Docusign - Upload & Sign Docs screenshot 3

Docusign - Upload & Sign Docs screenshot 4

Docusign - Upload & Sign Docs screenshot 5

Docusign - Upload & Sign Docs screenshot 6

Securely send and sign digital documents, contracts, and PDFs from any device. Create your own signature, upload files from various cloud services, and manage the signing process with ease. It's a legally binding and secure way to handle agreements.

What We Love

🚀 Easy to use
🚀 Convenient for signing documents on the go
🚀 Saves time and effort
🔒 Secure digital signatures

Room to Improve

🐛 Glitches with placing signatures and text boxes
🐛 Inconsistent performance across devices
🐛 Issues with editing and updating documents

#2

Signature: Fill and Sign PDF by SMM service, s.r.o.

Digital Signer, eSign Document

Strong Contender

💼 Business

4.8(111 ratings)

FreeAdsIn-App Purchases

Signature: Fill and Sign PDF screenshot 1

Signature: Fill and Sign PDF screenshot 2

Signature: Fill and Sign PDF screenshot 3

Signature: Fill and Sign PDF screenshot 4

Signature: Fill and Sign PDF screenshot 5

Easily sign, send, and manage documents with this app. It allows you to draw or type signatures, fill out forms, scan documents, and request signatures from others. Securely store and organize your files in iCloud.

#3

Genius Sign: PDF doc signature by The Grizzly Labs

Annotate, fill, send documents

Worth Considering

💼 Business

4.9😊(12K ratings)

FreeIn-App Purchases

Genius Sign: PDF doc signature screenshot 1

Genius Sign: PDF doc signature screenshot 2

Genius Sign: PDF doc signature screenshot 3

Genius Sign: PDF doc signature screenshot 4

Genius Sign: PDF doc signature screenshot 5

Genius Sign: PDF doc signature screenshot 6

Easily sign, date, and annotate documents directly on your device. Import files, add your signature by drawing or scanning, and insert text or dates. Save time with smart features that locate signature fields and repeat initials across pages.

What We Love

🚀 Easy to use
🚀 Convenient for signing documents on the go
🚀 Integrates well with Genius Scan app
👍 Clean and intuitive user interface

Room to Improve

🐛 Occasional crashes or bugs after updates
🐛 Issues with PDF document recognition and rendering
💡 Needs more customization options for signatures (e.g., color, size)

More Add Signature To Digital Documents apps to explore

SignNow: e-Signature app

SignNow: e-Signature app

Sign documents & PDF forms

Easily sign and manage PDF documents and other file formats with this comprehensive e-signature solution. Upload files, create templates, and collect legally-binding signatures from multiple parties. Securely store and access your documents online or offline.

E-sign documents without limitsCreate legally-binding e-signaturesUpload and fill PDF/Word documents

📊 Productivity

free with in-app purchases

Sign Documents PDF Signature

Sign Documents PDF Signature

Write & Send Forms

📊 Productivity

Signature Scanner - SignaScan

Signature Scanner - SignaScan

Scan Signature - Digital eSign

Easily create, manage, and scan digital signatures for documents on the go. Streamline everyday document handling with a clean and efficient interface. Unlock full functionality with in-app purchases or a subscription.

Create digital signaturesManage digital signaturesScan signatures

📊 Productivity

free with in-app purchases

Signature Maker Sign PDF

Signature Maker Sign PDF

Fill Out Forms & Documents

📊 Productivity

Signature PDF: eSign Documents

Signature PDF: eSign Documents

Sign Documents: eSign PDFs

📊 Productivity

Sign Documents: PDF eSign

Sign Documents: PDF eSign

Sign PDF Documents Easily

AI Signature Maker & PDF Sign

AI Signature Maker & PDF Sign

Sign PDFs, Scan & Fill Offline

📊 Productivity

SigLume: Signature Scanner

SigLume: Signature Scanner

Sign PDF Documents

📊 Productivity

eSign - Easy Sign Documents

eSign - Easy Sign Documents

Fill & Sign PDF Docs, Scanner

📊 Productivity

Digital Signature Offline

Digital Signature Offline

Digital Signature

SignatureDoc : Electronic Sign

SignatureDoc : Electronic Sign

Paste your sign in any PDFs

Easily add digital signatures to PDFs and images without printing or scanning. Create custom signatures using text, drawings, or images, and add timestamps, stamps, and icons to your documents. Save and share your signed files directly from the app.

Digitally sign PDFs and imagesCreate signatures from text, drawings, or imagesAdd dates, time stamps, and icons

📊 Productivity

free with in-app purchases

eSign App: Sign PDF Documents

eSign App: Sign PDF Documents

e-Signature: Signature Maker

Transform your device into a powerful tool for signing PDF documents and other file types. Easily import, scan, sign, and share documents locally, or send them to others for their signatures. Integrates with popular cloud services for seamless workflow.

Sign documents anywhereFill and edit documentsCreate custom e-signatures

Biometric Signature

Biometric Signature

by Soft Potential Ltd

eSign: Signature Creator

eSign: Signature Creator

PDF Signing App & Ink Scanner

📊 Productivity

Sign PDF Documents eSignDocPDF

Sign PDF Documents eSignDocPDF

Scan, fill,create digital sign

by Chamber of Commerce and Industry of Serbia

FAQ about Add Signature To Digital Documents

What are the best add signature to digital documents apps for iPhone?

Docusign - Upload & Sign Docs tops our add signature to digital documents apps ranking as of August 2026, with a 4.9-star average from 825K App Store ratings, and it's free to download.

Are there free add signature to digital documents apps for iPhone?

Yes — 20 of the top add signature to digital documents apps we rank are free to download, including Docusign - Upload & Sign Docs and Signature: Fill and Sign PDF.

Does Docusign - Upload & Sign Docs have ads or in-app purchases?

Docusign - Upload & Sign Docs has no ads and offers in-app purchases, according to its App Store listing as of August 2026.

How many add signature to digital documents apps are on the App Store?

We track 250+ add signature to digital documents apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What does the Docusign app do?

The Docusign app allows users to securely send and sign electronic documents, contracts, and PDFs from virtually any device. It enables the creation of custom digital signatures, easy document uploading from various cloud services, and streamlined management of the entire signing process.

Is signing documents with Docusign legally binding?

Yes, Docusign eSignature complies with the eSign Act, meaning agreements signed through the platform are legally binding. It provides a complete audit trail to track who signed, when, and where, ensuring the security and validity of the signed documents.