# Diagnostic Tool vs Zeus Ordering

The clearest difference is review sentiment: Diagnostic Tool at 100% against Zeus Ordering's 16%. Diagnostic Tool also leads on rating (5.0 vs 1.9). Zeus Ordering's advantage is update cadence (every 3 weeks vs every 5 months) and ratings volume (183 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Diagnostic Tool holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: Zeus Ordering has 183 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Diagnostic Tool's written reviews are positive against 16% of Zeus Ordering's.

Diagnostic Tool ships an update every 5 months, Zeus Ordering every 3 weeks. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Diagnostic Tool | Zeus Ordering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/diagnostic-tool/id1175329949/reviews)** | [1.9 (183 ratings)](https://appshunter.io/ios/app/zeus-ordering/id1521493903/reviews) |
| Number of ratings | 4 | **183** |
| Positive reviews | **100.0% of reviews** | 16.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 19 MB | 156 MB |
| Requires iOS | **11.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Control Techniques Limited](https://appshunter.io/developer/577139804) | [SDI Inc.](https://appshunter.io/developer/1521493905) |

## 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


### Zeus Ordering

[App page](https://appshunter.io/ios/app/zeus-ordering/id1521493903)

This app streamlines procurement for MRO, PPE, and indirect supply needs. It offers eProcurement software with extensive category access, data analytics for efficiency insights, and automation to reduce repetitive tasks. Storeroom technology enables accurate inventory management and tracking.

**Highlights:** eProcurement software, Data analytics and dynamic sourcing, Robotic process automation, Mobile storeroom technology, Inventory management system, Barcode scanning

**In-app purchases:** none

**What reviewers like**

- 👍 Getting better over time
- 👍 Good for ordering parts
- 👍 Easy to use for knowledgeable users
- 👍 Innovation in MRO space
- 👍 Real-time order visibility

**What reviewers complain about**

- 🐛 Constantly crashes
- 🐛 Frequent error messages
- 🐛 Lost connection issues
- 🐛 No pictures for parts
- 🐛 Incorrect part descriptions

**Reported bugs**

- Constantly crashes
- Frequent error messages
- Lost connection
- App doesn't log in
- Server is down

**Requested features**

- Add pictures for parts
- Improve part descriptions with details
- Allow direct communication with suppliers
- Ability to send pictures in comments
- Add ability to copy from catalog to paste elsewhere


## Frequently asked questions

### Is Diagnostic Tool free?

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

### Is Zeus Ordering free?

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

### Which has better reviews, Diagnostic Tool or Zeus Ordering?

Diagnostic Tool is rated higher. Diagnostic Tool averages 5.0 out of 5 from 4 ratings, while Zeus Ordering averages 1.9 from 183 ratings.

### Do Diagnostic Tool or Zeus Ordering have ads?

Neither Diagnostic Tool nor Zeus Ordering shows ads.

### Which is updated more often, Diagnostic Tool or Zeus Ordering?

Diagnostic Tool ships an update every 5 months, and Zeus Ordering every 3 weeks. Most recently, Diagnostic Tool was updated on October 16, 2026 and Zeus Ordering on October 12, 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.*