# HVAC Quick Load vs testo Smart

The clearest difference is price: testo Smart at Free against HVAC Quick Load's $6.99. testo Smart also leads on ratings volume (167 vs 3) and update cadence (every 2 months vs every 9 months). HVAC Quick Load's advantage is rating (3.3 vs 2.7) and review sentiment (45% vs 16%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

testo Smart is free to download; HVAC Quick Load costs $6.99 up front. HVAC Quick Load sells 1 one-off in-app purchase and testo Smart sells 5 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

HVAC Quick Load holds the better App Store score, 3.3 against 2.7. That said, the two scores are not equally well evidenced: testo Smart has 167 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 45% of HVAC Quick Load's written reviews are positive against 16% of testo Smart's.

HVAC Quick Load ships an update every 9 months, testo Smart every 2 months. The most recent releases landed on September 22, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | HVAC Quick Load | testo Smart |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/hvac-quick-load/id365781247/reviews)** | [2.7 (167 ratings)](https://appshunter.io/ios/app/testo-smart/id1482139629/reviews) |
| Number of ratings | 3 | **167** |
| Positive reviews | **45.5% of reviews** | 16.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#199** | — |
| Size | 1 MB | 195 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) |

## What reviewers say

### HVAC Quick Load

[App page](https://appshunter.io/ios/app/hvac-quick-load/id365781247)

**Currently charting:** #199 Top Paid · Productivity (US App Store)

This app provides quick, rule-of-thumb HVAC load calculations for various building types. It estimates heating and cooling loads, as well as air flows, based on building type, area, and occupancy. Results can be emailed with an Excel spreadsheet attachment for further analysis.

**Highlights:** Rule-of-thumb HVAC load calculations, Supports commercial, industrial, and residential buildings, Estimates cooling/heating loads and air flows, Email results with Excel spreadsheet attachment, IP and SI unit support, HVAC Equipment Locator included

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### testo Smart

[App page](https://appshunter.io/ios/app/testo-smart/id1482139629)

This app supports measurements for refrigeration, HVAC, and heating systems. It also aids in food safety, frying oil quality, and indoor climate monitoring. Quickly interpret data, create digital reports with photos, and send them via email.

**Highlights:** All-in-one system measurements, Graphical display of measured values, Digital PDF/CSV measurement reports, Email report sharing, Leak test analysis, Automatic refrigerant charging, Indoor air quality monitoring

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multi-site measurement | $6.99 | per month |
| Air balancing | $9.99 | per month |
| Multi-site measurement | $69.90 | per year |
| Air balancing | $99.90 | per year |
| Logging digital manifold | $44.99 | one-time |

**What reviewers like**

- 👍 Good app with some features
- 🚀 Great product
- 🚀 Useful app for measurements

**What reviewers complain about**

- 🐛 App won't connect
- 🐛 Connectivity issues
- 🐛 Unreliable connection
- 🐛 Forced updates
- 🐛 Laggy and unresponsive UI

**Reported bugs**

- App won't connect to devices
- Compatibility issues with newer iOS versions
- Frequent crashes and freezes
- Inability to save favorite refrigerants
- Measurement data not displaying properly

**Requested features**

- Add option to toggle Bluetooth discovery
- Improve Bluetooth range
- Add ability to customize colors and graphs
- Improve data export functionality
- Add option to name sensors


## Frequently asked questions

### Is HVAC Quick Load free?

HVAC Quick Load costs $6.99, and also offers in-app purchases.

### Is testo Smart free?

testo Smart is free to download, with in-app purchases available.

### Which has better reviews, HVAC Quick Load or testo Smart?

HVAC Quick Load is rated higher. HVAC Quick Load averages 3.3 out of 5 from 3 ratings, while testo Smart averages 2.7 from 167 ratings.

### Do HVAC Quick Load or testo Smart have ads?

Neither HVAC Quick Load nor testo Smart shows ads.

### Which is updated more often, HVAC Quick Load or testo Smart?

HVAC Quick Load ships an update every 9 months, and testo Smart every 2 months. Most recently, HVAC Quick Load was updated on September 22, 2026 and testo Smart on October 2, 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.*