# Sign Expert: PDF Form Filler — Scan, Edit & Convert Documents

> Mobile app for filling, signing, and annotating PDF documents. (iPhone/iPad app by Saturday Technologies Incorporated.)

- Source: https://appshunter.io/ios/app/sign-expert-pdf-form-filler/id1598978796 (this page in markdown: same URL + `.md`)
- Developer: [Saturday Technologies Incorporated](https://appshunter.io/developer/1242436346)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Rating: 4.72/5 from 159 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 19 MB
- Languages: English
- Released: 2021-12-14
- Data updated: 2026-06-10
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/sign-expert-pdf-form-filler/id1598978796/reviews.md

## What is Sign Expert?

Fill forms & sign documents on-the-go.


How it works:

1. Add your PDF

2. Draw your signature

3. If needed, fill form fields

4. Export and send the file


Sign Expert helps you electronically sign and annotate documents from your phone.


Features:
• Modify text appearance.
• Scale and position annotations with simple finger gestures.
• Elegant and easy interface for data entry.
• Save multiple signatures and initials for repeat usage.
• Create multiple digital signatures.
• Use a document scanner to batch scan multiple pages.
• Export high quality PDFs quickly.
• Import PDF from photos.
• Share signed document, or send to a printer.
• Annotations (text and signatures) are compatible with many external applications.
• Add checkmark and radio button stamps when filling forms
• Fast performance (minimal battery and space requirements).

Plus:
The app is free to use, but additional functionality requires a subscription. See in-app for details.

Privacy Policy: https://www.saturdaytechnologies.com/privacy
Terms of Use: https://www.saturdaytechnologies.com/terms

## Key features

- Fill PDF forms
- Draw and save multiple signatures
- Scan documents
- Edit text appearance
- Add checkmark and radio button stamps
- Export high-quality PDFs

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Sign PDF Plus - Monthly Plan | $14.99 | per month |
| Sign PDF Plus - Annual Plan | $99.99 | per year |
| Secret 30% Discount - Holiday | $69.99 | per year |
| Sign PDF Plus - Annual Plan | $99.99 | per year |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/sign-expert-pdf-form-filler/id1598978796/reviews.md

### 5/5 — Hhgggg

*2024-05-28*

DAKTA Blevins

### 5/5 — The Best

*2023-08-01*

One of the best application for iPhone and iPad. Thanks

### 1/5 — AWFUL APP!!!!!

*2023-07-21*

Took me 40 minutes to do a simple markup on an invoice, text kept changing sizes and moving! Deleting immediately

**Developer response:** We are truly sorry for the inconvenience caused by the issues you describe. In our latest update, we have fixed these interface bugs by completely redesigning our PDF editor. The markup process is buttery smooth and far more precise.
Again, we are truly sorry for the experience. If you decide to give us another chance, please do update the app to version 3.0 to see how we've improved. Additionally, if you have any questions or concerns, you can always reach us.

Thank you :)

### 5/5 — Great App

*2023-07-21*

This has helped me greatly to sign important documents without any hassles. I greatly recommend

## Frequently asked questions about Sign Expert

### What does Sign Expert do?

Sign Expert allows you to fill out and electronically sign PDF documents directly from your phone. You can also scan physical documents, add text annotations, and export your signed files as high-quality PDFs.

### What are the key features of Sign Expert?

Key features include the ability to fill form fields, draw and save multiple signatures, use a document scanner, modify text appearance, add checkmark and radio button stamps, and export signed documents quickly.

### Is Sign Expert free to use?

The app is free to use for basic functionality. However, additional features and advanced capabilities require a subscription. Specific details about subscription options can be found within the app.

### What devices is Sign Expert compatible with?

While specific operating system versions are not detailed, the app is designed for mobile devices, implying compatibility with both iOS and Android smartphones and tablets. Its annotations are also compatible with many external applications.

### How can I use Sign Expert for common tasks?

You can use Sign Expert to quickly sign contracts, fill out application forms, annotate important documents, or digitize and sign paper forms using the built-in scanner. It streamlines document management on the go.

## Version history (last 5 releases)

### 3.22 — 2023-12-18

Important bug fixes.

### 3.21 — 2023-11-27

Improved document editing & form filling

### 3.2 — 2023-11-24

- Improved user interface.
- Added stamps.
- Improvements and bug fixes.

### 3.1 — 2023-09-29

Bug fixes for iOS 17.

### 3.0 — 2023-07-27

NEW – Huge improvements to the PDF editor

- Completely redesigned user interface to work more intuitively.
- Buttery smooth interactions when signing and editing.
- Signatures better resemble crisp penmanship.
- Huge performance improvements.
- Annotations are now native to PDF and should be universally compatible.
- Fixed a lot of bugs.

Note: documents imported prior to this update will continue to use the previous PDF editor. Going forward, new documents will open into the new editor.

If you have any questions or concerns, please do not hesitate to contact us.

## Apps similar to Sign Expert

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PDF Expert: Editor & Converter](https://appshunter.io/ios/app/pdf-expert-editor-and-converter/id743974925) | 4.7 (214,585) | Free | Productivity |
| [Fill and Sign PDF Documents.](https://appshunter.io/ios/app/fill-and-sign-pdf-documents/id1361059450) | 4.3 (4,547) | Free | Productivity |
| [Signeasy－Sign Documents App](https://appshunter.io/ios/app/signeasysign-documents-app/id381786507) | 4.9 (33,857) | Free | Productivity |
| [Form Filler: fill & sign forms](https://appshunter.io/ios/app/form-filler-fill-and-sign-forms/id1137894117) | 4.6 (31,756) | Free | Productivity |
| [SignNow: e-Signature app](https://appshunter.io/ios/app/signnow-e-signature-app/id489262811) | 4.7 (9) | Free | Productivity |
| [Forma: PDF Document Editor](https://appshunter.io/ios/app/forma-pdf-document-editor/id1658514439) | 4.7 (24,743) | Free | Productivity |

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All apps by Saturday Technologies Incorporated: https://appshunter.io/developer/1242436346

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*