# Expert Sign vs Yunfrogs

The clearest difference is in-app purchases: Yunfrogs at none against Expert Sign's 1. Yunfrogs also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Expert Sign's advantage is update cadence (every 2 months vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Expert Sign sells 1 one-off in-app purchase. Yunfrogs asks for nothing beyond the download.

Expert Sign ships an update every 2 months, Yunfrogs every 5 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Expert Sign | Yunfrogs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/expert-sign-esign-pdf-docs/id1615025432/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 24 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Julien meyer](https://appshunter.io/developer/285361686) | [Xiamen Zhengdong Electronics Co., Ltd](https://appshunter.io/developer/1840609188) |

## What reviewers say

### Expert Sign

[App page](https://appshunter.io/ios/app/expert-sign-esign-pdf-docs/id1615025432)

Easily sign documents and photos directly on your iPhone. Save your signature and apply it to PDFs or images, then share them instantly. Ideal for quick document signing on the go.

**Highlights:** Draw and save multiple signatures, Import handwritten signatures, Sign PDFs and document photos, Add dates with one tap, Resize and position signatures, Export via email or other apps

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Expert Sign | $1.99 | one-time |


### Yunfrogs

[App page](https://appshunter.io/ios/app/yunfrogs/id6752700758)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Expert Sign free?

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

### Is Yunfrogs free?

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

### Do Expert Sign or Yunfrogs have ads?

Expert Sign shows ads; Yunfrogs does not.

### Which is updated more often, Expert Sign or Yunfrogs?

Expert Sign ships an update every 2 months, and Yunfrogs every 5 months. Most recently, Expert Sign was updated on November 3, 2026 and Yunfrogs on October 30, 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.*