# PuriFi Install vs Lennox Smart Tech

The clearest difference is rating: PuriFi Install at 5.0 against Lennox Smart Tech's 4.5. PuriFi Install also leads on iOS requirement (10.0 vs 16.0). Lennox Smart Tech's advantage is ratings volume (60 vs 1). 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.

PuriFi Install holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Lennox Smart Tech has 60 ratings behind it against 1, so its average is the more settled of the two.

PuriFi Install ships an update every 3 months, Lennox Smart Tech every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | PuriFi Install | Lennox Smart Tech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/purifi-install/id1584701413/reviews)** | [4.5 (60 ratings)](https://appshunter.io/ios/app/lennox-smart-tech/id6443907644/reviews) |
| Number of ratings | 1 | **60** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 184 MB | 98 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Modularis, Inc.](https://appshunter.io/developer/1342363330) | [Lennox Industries](https://appshunter.io/developer/355049651) |

## What reviewers say

### PuriFi Install

[App page](https://appshunter.io/ios/app/purifi-install/id1584701413)

This app streamlines the installation and setup of air and surface purification systems. It allows for quick device pairing and configuration of system settings, including indoor air quality levels by zone.

**Highlights:** Fast and efficient installation, Device pairing, System configuration, Indoor air quality settings, Zone-based adjustments

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is PuriFi Install free?

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

### Is Lennox Smart Tech free?

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

### Which has better reviews, PuriFi Install or Lennox Smart Tech?

PuriFi Install is rated higher. PuriFi Install averages 5.0 out of 5 from 1 ratings, while Lennox Smart Tech averages 4.5 from 60 ratings.

### Do PuriFi Install or Lennox Smart Tech have ads?

Neither PuriFi Install nor Lennox Smart Tech shows ads.

### Which is updated more often, PuriFi Install or Lennox Smart Tech?

PuriFi Install ships an update every 3 months, and Lennox Smart Tech every 2 months. Most recently, PuriFi Install was updated on November 3, 2026 and Lennox Smart Tech on November 3, 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.*