# Bird ID vs Sign documents

The clearest difference is ads: Bird ID at none against Sign documents's shown. Bird ID also leads on ratings volume (93 vs 1) and device support (3 vs 1). Sign documents's advantage is rating (5.0 vs 4.6). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Bird ID sells 7 in-app purchases, starting at $6.99 per month and Sign documents sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Sign documents holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Bird ID has 93 ratings behind it against 1, so its average is the more settled of the two.

Bird ID ships an update fortnightly, Sign documents weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bird ID | Sign documents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (93 ratings)](https://appshunter.io/ios/app/bird-id/id1450002184/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sign-documents-swiftsign/id6758965643/reviews)** |
| Number of ratings | **93** | 1 |
| Positive reviews | 28.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 109 MB | 16 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VaultID](https://appshunter.io/developer/1411398300) | [Nawal Amallou](https://appshunter.io/developer/1507194394) |

## What reviewers say

### Bird ID

[App page](https://appshunter.io/ios/app/bird-id/id1450002184)

This app provides a secure cloud-based digital certificate for signing documents with legal validity. It offers enhanced security features, transaction history, and device management for a convenient digital experience.

**Highlights:** Sign documents with legal validity, Cloud-based digital certificate, Secure OTP generation, Manage Bird ID accounts, View connected devices, Transaction history tracking, Purchase credits in-app

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mensal | $6.99 | per month |
| Plano Padrão | $6.99 | per month |
| Anual | $29.99 | per year |
| Plano Padrão | $29.99 | per year |
| 1 mês | $9.99 | one-time |
| 3 meses | $17.99 | one-time |
| 1 ano | $29.99 | one-time |


### Sign documents

[App page](https://appshunter.io/ios/app/sign-documents-swiftsign/id6758965643)

This app allows you to quickly and securely sign digital documents like PDFs, contracts, and forms. It offers various signature styles, a document scanner, and instant sharing options, eliminating the need for printing or faxing. Sign documents on the go with bank-level encryption for legally binding results.

**Highlights:** Sign PDFs and documents on the go, Create professional electronic signatures, Scan and sign paper documents, Multiple signature styles (draw, type, upload), Secure and legally binding signatures, Share signed documents instantly, Offline signing capability

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SwiftSign Pro | $1.99 | per month |
| SwiftSign Pro | $9.99 | per year |
| 10 Credits | $2.99 | one-time |


## Frequently asked questions

### Is Bird ID free?

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

### Is Sign documents free?

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

### Which has better reviews, Bird ID or Sign documents?

Sign documents is rated higher. Bird ID averages 4.6 out of 5 from 93 ratings, while Sign documents averages 5.0 from 1 ratings.

### Do Bird ID or Sign documents have ads?

Sign documents shows ads; Bird ID does not.

### Which is updated more often, Bird ID or Sign documents?

Bird ID ships an update fortnightly, and Sign documents weekly. Most recently, Bird ID was updated on November 6, 2026 and Sign documents on October 31, 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.*