# Carrier eServices vs SmarTech

The clearest difference is update cadence: SmarTech at every 12 months against Carrier eServices's every 32 months. Carrier eServices's advantage is iOS requirement (8.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Carrier eServices ships an update every 32 months, SmarTech every 12 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Carrier eServices | SmarTech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (9 ratings)](https://appshunter.io/ios/app/smartech/id1071783318/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 12 months** |
| Monetization | — | Free |
| Size | 3 MB | 21 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [lise GmbH](https://appshunter.io/developer/514337209) | [Uniweld Products, Inc.](https://appshunter.io/developer/1097526384) |

## What reviewers say

### Carrier eServices

[App page](https://appshunter.io/ios/app/carrier-eservices/id514337006)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Carrier eServices free?

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

### Is SmarTech free?

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

### Do Carrier eServices or SmarTech have ads?

Neither Carrier eServices nor SmarTech shows ads.

### Which is updated more often, Carrier eServices or SmarTech?

Carrier eServices ships an update every 32 months, and SmarTech every 12 months. Most recently, Carrier eServices was updated on October 2, 2026 and SmarTech on October 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.*