# SmarTech vs YJACK VIEW

The clearest difference is rating: SmarTech at 3.6 against YJACK VIEW's 2.8. YJACK VIEW's advantage is update cadence (every 5 months vs every 12 months). On price, review sentiment, ratings volume and ads there is nothing between them.

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

SmarTech holds the better App Store score, 3.6 against 2.8. Both are backed by a comparable volume of ratings — 9 and 18 respectively. Written reviews split almost evenly too, at 25% and 25% positive.

SmarTech ships an update every 12 months, YJACK VIEW every 5 months. The most recent releases landed on June 1, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | SmarTech | YJACK VIEW |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (9 ratings)](https://appshunter.io/ios/app/smartech/id1071783318/reviews)** | [2.8 (18 ratings)](https://appshunter.io/ios/app/yjack-view/id1492358956/reviews) |
| Number of ratings | 9 | **18** |
| Positive reviews | 25.0% of reviews | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 21 MB | 19 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uniweld Products, Inc.](https://appshunter.io/developer/1097526384) | [YELLOW JACKET](https://appshunter.io/developer/924701171) |

## What reviewers say

### SmarTech

[App page](https://appshunter.io/ios/app/smartech/id1071783318)

This app connects to a digital manifold to display accurate pressure and temperature readings. It offers real-time Superheat and Subcooling calculations, supports over 109 refrigerants, and features a "Smart Charge Zone" for optimal system charging. Users can also generate and export system performance reports.

**Highlights:** Real-time pressure and temperature readings, Superheat and Subcooling calculations, 109+ refrigerant types supported, Smart Charge Zone indicator, System performance reporting, PDF/CSV report export

**Features:** macOS Compatibility

**In-app purchases:** none


### YJACK VIEW

[App page](https://appshunter.io/ios/app/yjack-view/id1492358956)

This app provides a comprehensive HVAC/R diagnostic solution by integrating with specialized hardware. It allows users to view live data, create and share service reports, and perform detailed system analysis for pressure, temperature, evacuation, and more.

**Highlights:** Live data monitoring, Customizable PDF service reports, Enhanced datalogging, Pressure and temperature analysis, Evacuation monitoring, Psychrometric analysis, Electrical readings

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmarTech free?

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

### Is YJACK VIEW free?

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

### Which has better reviews, SmarTech or YJACK VIEW?

SmarTech is rated higher. SmarTech averages 3.6 out of 5 from 9 ratings, while YJACK VIEW averages 2.8 from 18 ratings.

### Do SmarTech or YJACK VIEW have ads?

Neither SmarTech nor YJACK VIEW shows ads.

### Which is updated more often, SmarTech or YJACK VIEW?

SmarTech ships an update every 12 months, and YJACK VIEW every 5 months. Most recently, SmarTech was updated on June 1, 2026 and YJACK VIEW on September 24, 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.*