# Firma Documentos vs iSign

The clearest difference is review sentiment: Firma Documentos at 100% against iSign's 0%. Firma Documentos also leads on in-app purchases (none vs 8) and iOS requirement (10.0 vs 16.6). iSign's advantage is update cadence (every 2 days vs every 12 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. iSign sells 8 in-app purchases, starting at $2.99 per 7 days. Firma Documentos asks for nothing beyond the download.

Firma Documentos ships an update every 12 months, iSign every 2 days. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Firma Documentos | iSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (26 ratings)](https://appshunter.io/ios/app/isign-sign-documents/id6740584958/reviews)** |
| Number of ratings | — | **26** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 15 MB | 59 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oregon Comercial](https://appshunter.io/developer/1336948530) | [Eidarovi Ilgar](https://appshunter.io/developer/1790704253) |

## What reviewers say

### Firma Documentos

[App page](https://appshunter.io/ios/app/firma-documentos/id1410730800)

Digitally sign documents securely and efficiently from your mobile device. Send documents for signing, attach complementary files, and eliminate the need for printing, faxing, or scanning. Streamline business processes and save time and resources.

**Highlights:** Secure digital document signing, Send documents for signing, Attach complementary documentation, Eliminate printing and scanning, Track document actions, Cloud storage

**Features:** macOS Compatibility

**In-app purchases:** none


### iSign

[App page](https://appshunter.io/ios/app/isign-sign-documents/id6740584958)

Easily create, manage, and customize digital signatures for business, personal, or legal documents. Sign PDFs, Word files, and images securely and paperlessly directly from your device. Offers a seamless and professional signing experience.

**Highlights:** Create custom digital signatures, Sign PDFs, Word, and image files, Secure and legally compliant signatures, Paperless document signing, Manage signatures easily

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Create Your Signature | $2.99 | per 7 days |
| Create Your Signature | $4.99 | per 7 days |
| Create Your Signature | $6.99 | per 7 days |
| Create Your Signature | $9.99 | per 7 days |
| Create Your Signature | $19.99 | per year |
| Create Your Signature | $29.99 | per year |
| Create Your Signature | $39.99 | per year |
| Create Your Signature | $49.99 | per year |


## Frequently asked questions

### Is Firma Documentos free?

Firma Documentos is free to download, with no in-app purchases.

### Is iSign free?

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

### Do Firma Documentos or iSign have ads?

Neither Firma Documentos nor iSign shows ads.

### Which is updated more often, Firma Documentos or iSign?

Firma Documentos ships an update every 12 months, and iSign every 2 days. Most recently, Firma Documentos was updated on October 15, 2026 and iSign on October 11, 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.*