# NHDOT eFieldBook vs CMS Mobile 4

The clearest difference is iOS requirement: NHDOT eFieldBook at 15.1 against CMS Mobile 4's 17.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NHDOT eFieldBook ships an update every 3 months, CMS Mobile 4 every 6 weeks. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | NHDOT eFieldBook | CMS Mobile 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/cms-mobile-4/id1640050445/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 35 MB | 37 MB |
| Requires iOS | **15.1** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ExeVision](https://appshunter.io/developer/1406987452) | [ALNET SYSTEMS SP Z O O](https://appshunter.io/developer/351572701) |

## What reviewers say

### NHDOT eFieldBook

[App page](https://appshunter.io/ios/app/nhdot-efieldbook/id1406987454)

**Features:** macOS Compatibility

**In-app purchases:** none


### CMS Mobile 4

[App page](https://appshunter.io/ios/app/cms-mobile-4/id1640050445)

Access and control IP CCTV cameras remotely from anywhere in the world. View live feeds, playback recordings, and manage PTZ functions of your surveillance system through any TCP/IP connection.

**Highlights:** Remote access to NetStation/Net Hybrid Servers, Live view of IP CCTV cameras, Playback of recorded footage, PTZ control for cameras, Connects via TCP/IP (EDGE, 3G, Wi-Fi), Demo cameras available

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NHDOT eFieldBook free?

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

### Is CMS Mobile 4 free?

CMS Mobile 4 is free to download, with no in-app purchases.

### Do NHDOT eFieldBook or CMS Mobile 4 have ads?

Neither NHDOT eFieldBook nor CMS Mobile 4 shows ads.

### Which is updated more often, NHDOT eFieldBook or CMS Mobile 4?

NHDOT eFieldBook ships an update every 3 months, and CMS Mobile 4 every 6 weeks. Most recently, NHDOT eFieldBook was updated on September 29, 2026 and CMS Mobile 4 on October 1, 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.*