# Carrier® SMART Service vs Pre

The clearest difference is rating: Pre at 5.0 against Carrier® SMART Service's 3.9. Pre also leads on iOS requirement (13.0 vs 15.1). Carrier® SMART Service's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (7 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Pre holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Carrier® SMART Service has 7 ratings behind it against 1, so its average is the more settled of the two.

Carrier® SMART Service ships an update every 2 months, Pre every 7 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Carrier® SMART Service | Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/carrier-smart-service/id1270583291/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pre-alignment/id1499479273/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 107 MB | 67 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carrier Corporation](https://appshunter.io/developer/542004889) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### Carrier® SMART Service

[App page](https://appshunter.io/ios/app/carrier-smart-service/id1270583291)

This app provides proactive equipment and system management by analyzing chiller and HVAC unit operating trends. It helps building managers make informed decisions for maintenance, repair, and financial performance improvement.

**Highlights:** Equipment and system management, Chiller and HVAC operating trend analysis, Informed decision-making for maintenance, Building financial performance improvement, View chiller operation insights, Track HVAC unit trends

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

**In-app purchases:** none


### Pre

[App page](https://appshunter.io/ios/app/pre-alignment/id1499479273)

This app guides users through pre-alignment tasks using a connected Bluetooth probe. It allows measurement and recording of run-out, bearing clearance, and soft foot, with the ability to generate instant PDF reports.

**Highlights:** Bluetooth connectivity, Icon-based adaptive user interface, Measure and record Run-Out, Measure and record Bearing Clearance, Measure and record True SoftCheck, Generate instant PDF reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Carrier® SMART Service free?

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

### Is Pre free?

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

### Which has better reviews, Carrier® SMART Service or Pre?

Pre is rated higher. Carrier® SMART Service averages 3.9 out of 5 from 7 ratings, while Pre averages 5.0 from 1 ratings.

### Do Carrier® SMART Service or Pre have ads?

Neither Carrier® SMART Service nor Pre shows ads.

### Which is updated more often, Carrier® SMART Service or Pre?

Carrier® SMART Service ships an update every 2 months, and Pre every 7 months. Most recently, Carrier® SMART Service was updated on October 24, 2026 and Pre on October 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.*