# Ammann ADS vs ZapPDF

The clearest difference is in-app purchases: Ammann ADS at none against ZapPDF's 2. Ammann ADS also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ZapPDF sells 2 in-app purchases, starting at $8.99 per year. Ammann ADS asks for nothing beyond the download.

Ammann ADS ships an update every 4 months, ZapPDF every 2 months. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Ammann ADS | ZapPDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 50 MB | 16 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ammann Switzerland Ltd](https://appshunter.io/developer/1036134398) | [Yasar Berker Gungor](https://appshunter.io/developer/1809846909) |

## What reviewers say

### Ammann ADS

[App page](https://appshunter.io/ios/app/ammann-ads/id6443826706)

**In-app purchases:** none


### ZapPDF

[App page](https://appshunter.io/ios/app/zappdf-merge-split-and-edit/id6759740507)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZapPDF Pro Annual | $8.99 | per year |
| Lifetime Pro Unlock | $14.99 | one-time |


## Frequently asked questions

### Is Ammann ADS free?

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

### Is ZapPDF free?

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

### Do Ammann ADS or ZapPDF have ads?

Neither Ammann ADS nor ZapPDF shows ads.

### Which is updated more often, Ammann ADS or ZapPDF?

Ammann ADS ships an update every 4 months, and ZapPDF every 2 months. Most recently, Ammann ADS was updated on November 7, 2026 and ZapPDF on November 9, 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.*