# Lennox Smart Tech vs Psychrometrics

The clearest difference is price: Lennox Smart Tech at Free against Psychrometrics's $3.99. Lennox Smart Tech also leads on rating (4.5 vs 4.1) and ratings volume (60 vs 11). Psychrometrics's advantage is review sentiment (20% vs 0%). On update cadence, ads, in-app purchases and device support there is nothing between them.

Lennox Smart Tech is free to download; Psychrometrics costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lennox Smart Tech holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: Lennox Smart Tech has 60 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 0% of Lennox Smart Tech's written reviews are positive against 20% of Psychrometrics's, so the app with the better star average is not the one people write more warmly about.

Lennox Smart Tech ships an update every 2 months, Psychrometrics every 3 months. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Lennox Smart Tech | Psychrometrics |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.5 (60 ratings)](https://appshunter.io/ios/app/lennox-smart-tech/id6443907644/reviews)** | [4.1 (11 ratings)](https://appshunter.io/ios/app/psychrometrics/id6455889577/reviews) |
| Number of ratings | **60** | 11 |
| Positive reviews | 0.0% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 98 MB | 2 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [Wassim Murr](https://appshunter.io/developer/1474939474) |

## 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


### Psychrometrics

[App page](https://appshunter.io/ios/app/psychrometrics/id6455889577)

This app provides tools for analyzing and quantifying air and moisture properties. It offers a comprehensive calculator, interactive chart, and project management features for HVAC engineers, meteorologists, and industrial professionals. Supports both SI and IP units for versatile use.

**Highlights:** Comprehensive psychrometric calculator, Dual units support (SI/IP), Psychrometric process simulation, Interactive psychrometric chart, HVAC project management, Printable project reports, User-friendly interface

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

**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 Psychrometrics free?

Psychrometrics costs $3.99, with no in-app purchases.

### Which has better reviews, Lennox Smart Tech or Psychrometrics?

Lennox Smart Tech is rated higher. Lennox Smart Tech averages 4.5 out of 5 from 60 ratings, while Psychrometrics averages 4.1 from 11 ratings.

### Do Lennox Smart Tech or Psychrometrics have ads?

Neither Lennox Smart Tech nor Psychrometrics shows ads.

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

Lennox Smart Tech ships an update every 2 months, and Psychrometrics every 3 months. Most recently, Lennox Smart Tech was updated on October 31, 2026 and Psychrometrics on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*