# SMART Service Tool vs Zeus Ordering

The clearest difference is review sentiment: SMART Service Tool at 75% against Zeus Ordering's 15%. SMART Service Tool also leads on rating (4.0 vs 1.9). Zeus Ordering's advantage is ratings volume (183 vs 15) and iOS requirement (12.2 vs 26.0). 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.

SMART Service Tool holds the better App Store score, 4.0 against 1.9. That said, the two scores are not equally well evidenced: Zeus Ordering has 183 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 75% of SMART Service Tool's written reviews are positive against 15% of Zeus Ordering's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 22, 2026 and September 1, 2026 respectively.

## The numbers

| Metric | SMART Service Tool | Zeus Ordering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (15 ratings)](https://appshunter.io/ios/app/smart-service-tool/id918610107/reviews)** | [1.9 (183 ratings)](https://appshunter.io/ios/app/zeus-ordering/id1521493903/reviews) |
| Number of ratings | 15 | **183** |
| Positive reviews | **75.0% of reviews** | 15.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 62 MB | 156 MB |
| Requires iOS | 26.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Rodrigo Miranda](https://appshunter.io/developer/1742641426) | [SDI Inc.](https://appshunter.io/developer/1521493905) |

## What reviewers say

### SMART Service Tool

[App page](https://appshunter.io/ios/app/smart-service-tool/id918610107)

This tool helps HVACR technicians quickly convert pressure to temperature and calculate superheat/subcooling using refrigerant data. It offers selectable units, customizable displays, and the ability to record and email data.

**Highlights:** Pressure to temperature conversion, Superheat and subcooling calculation, Selectable units of measure, Digital or analog display modes, Record and email data, Over 65 refrigerants supported

**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 SMART Service Tool free?

SMART Service 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, SMART Service Tool or Zeus Ordering?

SMART Service Tool is rated higher. SMART Service Tool averages 4.0 out of 5 from 15 ratings, while Zeus Ordering averages 1.9 from 183 ratings.

### Do SMART Service Tool or Zeus Ordering have ads?

Neither SMART Service Tool nor Zeus Ordering shows ads.

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

SMART Service Tool ships an update every 3 weeks, and Zeus Ordering every 3 weeks. Most recently, SMART Service Tool was updated on September 22, 2026 and Zeus Ordering on September 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.*