# CORE Service vs One Onsite

The clearest difference is rating: CORE Service at 3.6 against One Onsite's 2.5. One Onsite's advantage is review sentiment (23% vs 0%) and update cadence (every 5 weeks vs every 3 months). 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.

CORE Service holds the better App Store score, 3.6 against 2.5. That said, the two scores are not equally well evidenced: One Onsite has 98 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 0% of CORE Service's written reviews are positive against 23% of One Onsite's, so the app with the better star average is not the one people write more warmly about.

CORE Service ships an update every 3 months, One Onsite every 5 weeks. The most recent releases landed on August 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CORE Service | One Onsite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews)** | [2.5 (98 ratings)](https://appshunter.io/ios/app/one-onsite/id1642547378/reviews) |
| Number of ratings | 19 | **98** |
| Positive reviews | 0.0% of reviews | **23.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 46 MB | 117 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [SMS ASSIST, LLC](https://appshunter.io/developer/616469901) |

## What reviewers say

### CORE Service

[App page](https://appshunter.io/ios/app/core-service/id1566612696)

This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.

**Highlights:** Wireless mobile service app, Guided setup with progress indicators, Enhanced test functionality, Real-time sensor readings and trending, Parameter configuration, Exportable setup summaries

**Features:** macOS Compatibility

**In-app purchases:** none


### One Onsite

[App page](https://appshunter.io/ios/app/one-onsite/id1642547378)

This app assists facilities maintenance technicians in completing work orders efficiently. It provides detailed information, guides users to locations, and streamlines data collection for back-office reporting. The application is designed for ease of use with minimal training required.

**Highlights:** View daily work orders, Access issue and location details, Review historical service information, Guided task completion flow, Offline and low-connectivity performance, Faster data upload, Battery optimization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CORE Service free?

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

### Is One Onsite free?

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

### Which has better reviews, CORE Service or One Onsite?

CORE Service is rated higher. CORE Service averages 3.6 out of 5 from 19 ratings, while One Onsite averages 2.5 from 98 ratings.

### Do CORE Service or One Onsite have ads?

Neither CORE Service nor One Onsite shows ads.

### Which is updated more often, CORE Service or One Onsite?

CORE Service ships an update every 3 months, and One Onsite every 5 weeks. Most recently, CORE Service was updated on August 15, 2026 and One Onsite 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.*