# Lennox Smart Tech vs AU chat

The clearest difference is update cadence: Lennox Smart Tech at every 2 months against AU chat's every 3 months. 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.

Lennox Smart Tech ships an update every 2 months, AU chat every 3 months. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Lennox Smart Tech | AU chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (60 ratings)](https://appshunter.io/ios/app/lennox-smart-tech/id6443907644/reviews)** | — |
| Number of ratings | **60** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 98 MB | 32 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [Inkook Chun](https://appshunter.io/developer/1754382929) |

## What reviewers say

### Lennox Smart Tech

[App page](https://appshunter.io/ios/app/lennox-smart-tech/id6443907644)

Streamline the installation and servicing of compatible home comfort systems. This app allows for remote testing, diagnostics, and system setting adjustments directly from a smartphone, reducing the need to physically interact with equipment.

**Highlights:** Install and service home comfort systems, Test and run diagnostics remotely, Adjust system settings from smartphone, Compatible with Lennox S40/L40/M40/E40 Smart Thermostats, Direct smartphone control

**In-app purchases:** none


### AU chat

[App page](https://appshunter.io/ios/app/au-chat/id6752219640)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lennox Smart Tech free?

Lennox Smart Tech is free to download, with no in-app purchases.

### Is AU chat free?

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

### Do Lennox Smart Tech or AU chat have ads?

Neither Lennox Smart Tech nor AU chat shows ads.

### Which is updated more often, Lennox Smart Tech or AU chat?

Lennox Smart Tech ships an update every 2 months, and AU chat every 3 months. Most recently, Lennox Smart Tech was updated on October 18, 2026 and AU chat on October 16, 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.*