# Marathon FutureX vs Sign Documents

The clearest difference is in-app purchases: Marathon FutureX at none against Sign Documents's 2. Marathon FutureX also leads on ads (none vs shown) and iOS requirement (13.4 vs 17.0). Sign Documents's advantage is update cadence (every 10 days vs every 15 months). On price and device support there is nothing between them.

Both are free to download. Sign Documents sells 2 in-app purchases, starting at $2.49 per 7 days. Marathon FutureX asks for nothing beyond the download.

Marathon FutureX ships an update every 15 months, Sign Documents every 10 days. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Marathon FutureX | Sign Documents |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sign-documents-esign-pdf/id6766258190/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 10 days** |
| Monetization | — | Free with in-app purchases |
| Size | 174 MB | 27 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Marathon FurtureX](https://appshunter.io/developer/1524913793) | [Daniil Kabachuk](https://appshunter.io/developer/1896048985) |

## What reviewers say

### Marathon FutureX

[App page](https://appshunter.io/ios/app/marathon-futurex/id1524913791)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sign Documents

[App page](https://appshunter.io/ios/app/sign-documents-esign-pdf/id6766258190)

Effortlessly sign PDFs and images directly on your iPhone without needing a printer, scanner, or account. Import documents, add your signature by drawing, typing, or photographing it, and share the final file securely on your device.

**Highlights:** Sign PDFs and images, Multiple signature creation methods, Import from cloud storage, Scan paper documents, Reusable signature library, Export flattened PDFs, Share via iOS share sheet

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sign Documents Pro | $2.49 | per 7 days |
| Sign Documents Pro | $4.99 | per 7 days |


## Frequently asked questions

### Is Marathon FutureX free?

Marathon FutureX is free to download, with no in-app purchases.

### Is Sign Documents free?

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

### Do Marathon FutureX or Sign Documents have ads?

Sign Documents shows ads; Marathon FutureX does not.

### Which is updated more often, Marathon FutureX or Sign Documents?

Marathon FutureX ships an update every 15 months, and Sign Documents every 10 days. Most recently, Marathon FutureX was updated on October 13, 2026 and Sign Documents on October 4, 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.*