# Diagnostic Tool vs AK

The clearest difference is update cadence: Diagnostic Tool at every 5 months against AK's every 14 months. Diagnostic Tool also leads on ratings volume (4 vs 1) and iOS requirement (11.0 vs 15.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Diagnostic Tool against 5.0 for AK. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Diagnostic Tool ships an update every 5 months, AK every 14 months. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Diagnostic Tool | AK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/diagnostic-tool/id1175329949/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ak-cc-connect/id1482250780/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 14 months |
| Monetization | Free | Free |
| Size | 19 MB | 17 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Control Techniques Limited](https://appshunter.io/developer/577139804) | [Danfoss A/S](https://appshunter.io/developer/423984644) |

## What reviewers say

### Diagnostic Tool

[App page](https://appshunter.io/ios/app/diagnostic-tool/id1175329949)

Quickly resolve error codes for Control Techniques' drives with this tool. It includes wiring diagrams for setup and fault finding, plus direct access to global technical support contact information.

**Highlights:** Error code lookup, Wiring diagrams, Fault finding assistance, Technical support contacts, Supported product list

**Features:** macOS Compatibility

**In-app purchases:** none


### AK

[App page](https://appshunter.io/ios/app/ak-cc-connect/id1482250780)

This application provides a user-friendly interface to connect with a Danfoss Bluetooth display for AK-CC case controllers. It offers a visual overview of controller functions, alarm details, live parameter monitoring, and quick setup capabilities.

**Highlights:** Bluetooth connectivity to AK-CC controllers, Visual overview of operation status, View alarm details and troubleshooting tips, Monitor live parameter graphs, Access main controls (Main Switch, Defrost), Quick Setup for controllers, Save and email setting files

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

**In-app purchases:** none


## Frequently asked questions

### Is Diagnostic Tool free?

Diagnostic Tool is free to download, with no in-app purchases.

### Is AK free?

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

### Which has better reviews, Diagnostic Tool or AK?

Diagnostic Tool and AK are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do Diagnostic Tool or AK have ads?

Neither Diagnostic Tool nor AK shows ads.

### Which is updated more often, Diagnostic Tool or AK?

Diagnostic Tool ships an update every 5 months, and AK every 14 months. Most recently, Diagnostic Tool was updated on October 16, 2026 and AK on October 25, 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.*