# NOX Operational vs eSign

The clearest difference is in-app purchases: NOX Operational at none against eSign's 3. NOX Operational also leads on ads (none vs shown). eSign's advantage is update cadence (monthly vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. eSign sells 3 in-app purchases, starting at $4.99 per 7 days. NOX Operational asks for nothing beyond the download.

NOX Operational ships an update every 7 months, eSign monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NOX Operational | eSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Monthly** |
| Size | 45 MB | 62 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Florent Ahmedi](https://appshunter.io/developer/1562381052) | [Evgenii Aleksanov](https://appshunter.io/developer/1740557547) |

## What reviewers say

### NOX Operational

[App page](https://appshunter.io/ios/app/nox-operational/id6504229337)

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

**In-app purchases:** none


### eSign

[App page](https://appshunter.io/ios/app/esign-sign-pdf-docx-documents/id6755193759)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $10.99 | per month |
| Yearly | $58.99 | per year |


## Frequently asked questions

### Is NOX Operational free?

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

### Is eSign free?

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

### Do NOX Operational or eSign have ads?

eSign shows ads; NOX Operational does not.

### Which is updated more often, NOX Operational or eSign?

NOX Operational ships an update every 7 months, and eSign monthly. Most recently, NOX Operational was updated on October 25, 2026 and eSign on October 24, 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.*