# OptiTools Mobile vs testo Smart

The clearest difference is review sentiment: OptiTools Mobile at 100% against testo Smart's 16%. OptiTools Mobile also leads on rating (3.5 vs 2.7) and in-app purchases (none vs 5). testo Smart's advantage is ratings volume (167 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. testo Smart sells 5 in-app purchases, starting at $6.99 per month. OptiTools Mobile asks for nothing beyond the download.

OptiTools Mobile holds the better App Store score, 3.5 against 2.7. That said, the two scores are not equally well evidenced: testo Smart has 167 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of OptiTools Mobile's written reviews are positive against 16% of testo Smart's.

OptiTools Mobile ships an update every 3 months, testo Smart every 2 months. The most recent releases landed on June 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | OptiTools Mobile | testo Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/optitools-mobile/id1279710384/reviews)** | [2.7 (167 ratings)](https://appshunter.io/ios/app/testo-smart/id1482139629/reviews) |
| Number of ratings | 2 | **167** |
| Positive reviews | **100.0% of reviews** | 16.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 59 MB | 195 MB |
| Requires iOS | **11** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Invertek Drives Limited](https://appshunter.io/developer/1279710383) | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) |

## What reviewers say

### OptiTools Mobile

[App page](https://appshunter.io/ios/app/optitools-mobile/id1279710384)

Configure and monitor Optidrive products wirelessly via Bluetooth. Transfer parameter sets, view real-time drive status, motor speed, current, and power. Adjust motor speed, start/stop drives, and reset trips when unlocked.

**Highlights:** Wireless configuration via Bluetooth BLE, Real-time parameter monitoring and editing, Transfer parameter sets between drive and smartphone, Monitor drive status, motor speed, current, and power, Adjust motor speed, start/stop drives, reset trips

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 OptiTools Mobile free?

OptiTools Mobile is free to download, with no in-app purchases.

### Is testo Smart free?

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

### Which has better reviews, OptiTools Mobile or testo Smart?

OptiTools Mobile is rated higher. OptiTools Mobile averages 3.5 out of 5 from 2 ratings, while testo Smart averages 2.7 from 167 ratings.

### Do OptiTools Mobile or testo Smart have ads?

Neither OptiTools Mobile nor testo Smart shows ads.

### Which is updated more often, OptiTools Mobile or testo Smart?

OptiTools Mobile ships an update every 3 months, and testo Smart every 2 months. Most recently, OptiTools Mobile was updated on June 1, 2026 and testo Smart on September 25, 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.*