# FieldServiceOS vs Coating OS

The clearest difference is in-app purchases: Coating OS at none against FieldServiceOS's 1. Coating OS also leads on device support (4 vs 2) and iOS requirement (15.1 vs 18.6). FieldServiceOS's advantage is update cadence (every 2 days vs every 11 days). On price and ads there is nothing between them.

Both are free to download. FieldServiceOS sells 1 in-app purchase, starting at $14.99 per month. Coating OS asks for nothing beyond the download.

FieldServiceOS ships an update every 2 days, Coating OS every 11 days. The most recent releases landed on October 25, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | FieldServiceOS | Coating OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 11 days |
| Size | 22 MB | 120 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Aitor Recalde](https://appshunter.io/developer/1805666679) | [Jackson Stephenson](https://appshunter.io/developer/1750033151) |

## What reviewers say

### FieldServiceOS

[App page](https://appshunter.io/ios/app/fieldserviceos/id6755404926)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly | $14.99 | per month |


### Coating OS

[App page](https://appshunter.io/ios/app/coating-os/id6758826079)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is FieldServiceOS free?

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

### Is Coating OS free?

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

### Do FieldServiceOS or Coating OS have ads?

Neither FieldServiceOS nor Coating OS shows ads.

### Which is updated more often, FieldServiceOS or Coating OS?

FieldServiceOS ships an update every 2 days, and Coating OS every 11 days. Most recently, FieldServiceOS was updated on October 25, 2026 and Coating OS on October 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*