# dmx calculator vs testo Smart

The clearest difference is rating: dmx calculator at 4.3 against testo Smart's 2.7. dmx calculator also leads on review sentiment (50% vs 16%) and update cadence (every 3 weeks vs every 2 months). testo Smart's advantage is ads (none vs shown) and ratings volume (170 vs 6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. dmx calculator 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.

dmx calculator holds the better App Store score, 4.3 against 2.7. That said, the two scores are not equally well evidenced: testo Smart has 170 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 50% of dmx calculator's written reviews are positive against 16% of testo Smart's.

dmx calculator ships an update every 3 weeks, testo Smart every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | dmx calculator | testo Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/dmx-calculator/id1203563746/reviews)** | [2.7 (170 ratings)](https://appshunter.io/ios/app/testo-smart/id1482139629/reviews) |
| Number of ratings | 6 | **170** |
| Positive reviews | **50.0% of reviews** | 16.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 195 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OF COURSE Maciej Hofstede](https://appshunter.io/developer/1109126289) | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) |

## What reviewers say

### dmx calculator

[App page](https://appshunter.io/ios/app/dmx-calculator/id1203563746)

This application simplifies the process of calculating DMX dip switch settings for lighting equipment. It helps users easily address devices and generate a patch list, eliminating manual counting.

**Highlights:** Automatic dip switch calculation, Device addressing assistance, Patch list generation, Simplified DMX setup

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $0.99 | 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 dmx calculator free?

dmx calculator is free to download, with in-app purchases available.

### Is testo Smart free?

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

### Which has better reviews, dmx calculator or testo Smart?

dmx calculator is rated higher. dmx calculator averages 4.3 out of 5 from 6 ratings, while testo Smart averages 2.7 from 170 ratings.

### Do dmx calculator or testo Smart have ads?

dmx calculator shows ads; testo Smart does not.

### Which is updated more often, dmx calculator or testo Smart?

dmx calculator ships an update every 3 weeks, and testo Smart every 2 months. Most recently, dmx calculator was updated on November 2, 2026 and testo Smart on November 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.*