# Sign PDF documents vs Forma

The clearest difference is review sentiment: Forma at 69% against Sign PDF documents's 22%. Forma also leads on rating (4.7 vs 1.0) and ratings volume (26K vs 1). Sign PDF documents's advantage is monetization model (ad-supported vs freemium) and device support (4 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sign PDF documents sells 3 in-app purchases, starting at $2.99 per month and Forma sells 17 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Forma holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Forma has 26K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 22% of Sign PDF documents's written reviews are positive against 69% of Forma's.

Sign PDF documents ships an update every 3 weeks, Forma monthly. The most recent releases landed on August 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sign PDF documents | Forma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/sign-pdf-documents/id1011784538/reviews) | **[4.7 (26K ratings)](https://appshunter.io/ios/app/forma-pdf-document-editor/id1658514439/reviews)** |
| Number of ratings | 1 | **26K** |
| Positive reviews | 22.2% of reviews | **69.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Ad-supported** | Freemium |
| Best chart rank | — | **#102** |
| Size | 19 MB | 201 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emanuele Floris](https://appshunter.io/developer/597490842) | [BPMobile](https://appshunter.io/developer/1085442365) |

## What reviewers say

### Sign PDF documents

[App page](https://appshunter.io/ios/app/sign-pdf-documents/id1011784538)

Easily sign documents digitally without printing. This app allows for unlimited signatures without requiring a subscription or registration, making document signing quick and convenient.

**Highlights:** Unlimited digital signatures, No subscription required, No registration needed, Sign without printing, Document archiving

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $2.99 | per month |
| Unlimited Access | $8.99 | per year |
| PRO Lifetime Access | $22.99 | one-time |


### Forma

[App page](https://appshunter.io/ios/app/forma-pdf-document-editor/id1658514439)

**Currently charting:** #102 Top Grossing · Productivity (US App Store)

This AI-powered app allows users to edit, fill, sign, scan, and convert PDF documents. It offers features like text editing, form filling, e-signatures, OCR scanning, and file conversion. An AI assistant can summarize, rewrite, or generate content, and users can create invoices and resumes.

**Highlights:** AI-powered PDF editing, Fill and e-sign forms, Built-in OCR scanner, Convert PDFs to various formats, AI assistant for content generation, Create and send invoices, Resume builder

**Features:** Vision Pro support

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Forma Pro | $3.99 | per 7 days |
| Forma Pro | $4.99 | per 7 days |
| Forma Pro | $4.99 | per 7 days |
| Forma Pro | $5.99 | per 7 days |
| Forma Pro | $5.99 | per 7 days |
| Forma Pro | $6.99 | per 7 days |
| Forma Pro | $6.99 | per 7 days |
| Forma Pro | $9.99 | per month |
| 1 month Pro 100Gb storage | $10.99 | per month |
| 1 year Pro 10Gb storage | $19.99 | per year |
| Forma Pro | $20.99 | per year |
| 1 year Pro 100Gb storage | $24.99 | per year |
| Forma Pro | $24.99 | per year |
| Forma Pro | $29.99 | per year |
| Forma Pro | $39.99 | per year |
| Forma Pro | $39.99 | per year |
| Forma Pro | $59.99 | per year |

**What reviewers like**

- 🚀 Fast and efficient
- 👍 Easy to use
- 💡 Useful features like autofill and cloud sync
- 🚀 Seamless document management

**What reviewers complain about**

- 🐛 Crashes and glitches
- 💰 Expensive subscription
- 🔒 Difficult to cancel subscription
- 🚫 Limited editing capabilities

**Reported bugs**

- Incorrect document formatting after editing
- Inability to load or edit pre-existing documents
- Unexpected charges and billing issues

**Requested features**

- Undo/redo functionality
- Ability to edit existing text in documents
- Support for more file formats
- Stylus support for precise editing


## Frequently asked questions

### Is Sign PDF documents free?

Sign PDF documents is free to download, with in-app purchases available.

### Is Forma free?

Forma is free to download, with in-app purchases available.

### Which has better reviews, Sign PDF documents or Forma?

Forma is rated higher. Sign PDF documents averages 1.0 out of 5 from 1 ratings, while Forma averages 4.7 from 26K ratings.

### Do Sign PDF documents or Forma have ads?

Both Sign PDF documents and Forma show ads.

### Which is updated more often, Sign PDF documents or Forma?

Sign PDF documents ships an update every 3 weeks, and Forma monthly. Most recently, Sign PDF documents was updated on August 14, 2026 and Forma on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*