# SMART Service Tool vs RefTech

The clearest difference is review sentiment: SMART Service Tool at 75% against RefTech's 0%. SMART Service Tool also leads on rating (4.0 vs 2.7) and in-app purchases (none vs 1). RefTech's advantage is iOS requirement (13.4 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. RefTech sells 1 one-off in-app purchase. SMART Service Tool asks for nothing beyond the download.

SMART Service Tool holds the better App Store score, 4.0 against 2.7. That said, the two scores are not equally well evidenced: SMART Service Tool has 15 ratings behind it against 3, 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 0% of RefTech's.

SMART Service Tool ships an update every 3 weeks, RefTech every 6 months. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | SMART Service Tool | RefTech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (15 ratings)](https://appshunter.io/ios/app/smart-service-tool/id918610107/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/reftech/id1209881606/reviews) |
| Number of ratings | **15** | 3 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | **Free** | Subscription |
| Size | 62 MB | 6 MB |
| Requires iOS | 26.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rodrigo Miranda](https://appshunter.io/developer/1742641426) | [Blue Mountain Consulting Inc](https://appshunter.io/developer/1143744720) |

## 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


### RefTech

[App page](https://appshunter.io/ios/app/reftech/id1209881606)

This diagnostic tool assists in troubleshooting commercial refrigeration systems up to 7.5 HP. Input sensor data to receive likely diagnoses and suggested repair steps. Version 1.3 adds Bluetooth connectivity for specific temperature and pressure probes.

**Highlights:** Refrigeration system diagnostics, Troubleshooting up to 7.5 HP, Pressure and temperature sensor input, Likely diagnosis generation, Repair suggestions, Bluetooth probe connectivity (v1.3)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RefTech Subscriptions | $9.99 | one-time |


## Frequently asked questions

### Is SMART Service Tool free?

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

### Is RefTech free?

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

### Which has better reviews, SMART Service Tool or RefTech?

SMART Service Tool is rated higher. SMART Service Tool averages 4.0 out of 5 from 15 ratings, while RefTech averages 2.7 from 3 ratings.

### Do SMART Service Tool or RefTech have ads?

Neither SMART Service Tool nor RefTech shows ads.

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

SMART Service Tool ships an update every 3 weeks, and RefTech every 6 months. Most recently, SMART Service Tool was updated on September 22, 2026 and RefTech on September 13, 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.*