# TechLinc vs CORE Service

The clearest difference is review sentiment: TechLinc at 100% against CORE Service's 0%. TechLinc also leads on rating (5.0 vs 3.6) and iOS requirement (12.0 vs 15.6). CORE Service's advantage is ratings volume (19 vs 3). On price, update cadence, ads and in-app purchases there is nothing between them.

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

TechLinc holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: CORE Service has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of TechLinc's written reviews are positive against 0% of CORE Service's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TechLinc | CORE Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/techlinc/id982623946/reviews)** | [3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews) |
| Number of ratings | 3 | **19** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 14 MB | 47 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [C/F Data Systems, LLC](https://appshunter.io/developer/668150167) | [Lennox Industries](https://appshunter.io/developer/355049651) |

## What reviewers say

### TechLinc

[App page](https://appshunter.io/ios/app/techlinc/id982623946)

This mobile service app provides field personnel with instant access to service history and job details. It enables digital signatures and immediate customer billing, syncing all data with office systems. The app streamlines workflows for efficient on-site operations.

**Highlights:** Access service history, Get directions, Enter job descriptions, Capture digital signatures, Instant customer billing, Sync with office systems

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is TechLinc free?

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

### Is CORE Service free?

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

### Which has better reviews, TechLinc or CORE Service?

TechLinc is rated higher. TechLinc averages 5.0 out of 5 from 3 ratings, while CORE Service averages 3.6 from 19 ratings.

### Do TechLinc or CORE Service have ads?

Neither TechLinc nor CORE Service shows ads.

### Which is updated more often, TechLinc or CORE Service?

TechLinc ships an update every 3 months, and CORE Service every 3 months. Most recently, TechLinc was updated on September 24, 2026 and CORE Service on October 7, 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.*