# Fort Knox ELD vs Cerulean for Azure DevOps

The clearest difference is in-app purchases: Fort Knox ELD at none against Cerulean for Azure DevOps's 1. Fort Knox ELD also leads on iOS requirement (13.0 vs 18.0). Cerulean for Azure DevOps's advantage is update cadence (weekly vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. Cerulean for Azure DevOps sells 1 in-app purchase, starting at $14.99 per year. Fort Knox ELD asks for nothing beyond the download.

Fort Knox ELD ships an update every 16 months, Cerulean for Azure DevOps weekly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Fort Knox ELD | Cerulean for Azure DevOps |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Weekly** |
| Size | 105 MB | 9 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Dejan Vojinovic](https://appshunter.io/developer/1720703255) | [Camille Terol](https://appshunter.io/developer/6780755920) |

## What reviewers say

### Fort Knox ELD

[App page](https://appshunter.io/ios/app/fort-knox-eld/id6474120429)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cerulean for Azure DevOps

[App page](https://appshunter.io/ios/app/cerulean-for-azure-devops/id6780755918)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Year Subscription | $14.99 | per year |


## Frequently asked questions

### Is Fort Knox ELD free?

Fort Knox ELD is free to download, with no in-app purchases.

### Is Cerulean for Azure DevOps free?

Cerulean for Azure DevOps is free to download, with in-app purchases available.

### Do Fort Knox ELD or Cerulean for Azure DevOps have ads?

Neither Fort Knox ELD nor Cerulean for Azure DevOps shows ads.

### Which is updated more often, Fort Knox ELD or Cerulean for Azure DevOps?

Fort Knox ELD ships an update every 16 months, and Cerulean for Azure DevOps weekly. Most recently, Fort Knox ELD was updated on October 7, 2026 and Cerulean for Azure DevOps on October 13, 2026.

---

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