# SMART Service Tool vs 608Log

The clearest difference is in-app purchases: SMART Service Tool at none against 608Log's 2. 608Log's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 608Log sells 2 in-app purchases, starting at $9.99 per month. SMART Service Tool asks for nothing beyond the download.

SMART Service Tool ships an update every 3 weeks, 608Log monthly. The most recent releases landed on September 22, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SMART Service Tool | 608Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (15 ratings)](https://appshunter.io/ios/app/smart-service-tool/id918610107/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 62 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rodrigo Miranda](https://appshunter.io/developer/1742641426) | [Angela Freeman](https://appshunter.io/developer/1885394844) |

## 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


### 608Log

[App page](https://appshunter.io/ios/app/608log/id6762030337)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 608Log Pro | $9.99 | per month |
| 608Log Pro | $99.99 | per year |


## Frequently asked questions

### Is SMART Service Tool free?

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

### Is 608Log free?

608Log is free to download, with in-app purchases available.

### Do SMART Service Tool or 608Log have ads?

Neither SMART Service Tool nor 608Log shows ads.

### Which is updated more often, SMART Service Tool or 608Log?

SMART Service Tool ships an update every 3 weeks, and 608Log monthly. Most recently, SMART Service Tool was updated on September 22, 2026 and 608Log on October 2, 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.*