# testo Smart vs Prometheus Mobile for Maximo

testo Smart and Prometheus Mobile for Maximo both sit at 2.7 stars, but that hides the real split: 75% of Prometheus Mobile for Maximo's written reviews are positive against 16% of testo Smart's. Prometheus Mobile for Maximo also leads on in-app purchases (none vs 5) and iOS requirement (14.0 vs 18.0). testo Smart's advantage is ratings volume (167 vs 9) and update cadence (every 2 months vs every 5 months). On price, rating, 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. Prometheus Mobile for Maximo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 2.7 for testo Smart against 2.8 for Prometheus Mobile for Maximo. That said, the two scores are not equally well evidenced: testo Smart has 167 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 16% of testo Smart's written reviews are positive against 75% of Prometheus Mobile for Maximo's.

testo Smart ships an update every 2 months, Prometheus Mobile for Maximo every 5 months. The most recent releases landed on October 13, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | testo Smart | Prometheus Mobile for Maximo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (167 ratings)](https://appshunter.io/ios/app/testo-smart/id1482139629/reviews) | **[2.8 (9 ratings)](https://appshunter.io/ios/app/prometheus-mobile-for-maximo/id1483137786/reviews)** |
| Number of ratings | **167** | 9 |
| Positive reviews | 16.3% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 195 MB | 12 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) | [PROMETHEUS GROUP, INC.](https://appshunter.io/developer/1554172551) |

## What reviewers say

### 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


### Prometheus Mobile for Maximo

[App page](https://appshunter.io/ios/app/prometheus-mobile-for-maximo/id1483137786)

Enhance IBM Maximo functionality in the field with a mobile solution that supports online and offline data collection. Improve accuracy and efficiency by bringing asset management capabilities directly to your maintenance teams.

**Highlights:** Offline data collection, Real-time data synchronization, Interactive maps, Dynamic data forms, Integration with enterprise systems, Mobile-first responsive design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is testo Smart free?

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

### Is Prometheus Mobile for Maximo free?

Prometheus Mobile for Maximo is free to download, with no in-app purchases.

### Which has better reviews, testo Smart or Prometheus Mobile for Maximo?

Prometheus Mobile for Maximo is rated higher. testo Smart averages 2.7 out of 5 from 167 ratings, while Prometheus Mobile for Maximo averages 2.8 from 9 ratings.

### Do testo Smart or Prometheus Mobile for Maximo have ads?

Neither testo Smart nor Prometheus Mobile for Maximo shows ads.

### Which is updated more often, testo Smart or Prometheus Mobile for Maximo?

testo Smart ships an update every 2 months, and Prometheus Mobile for Maximo every 5 months. Most recently, testo Smart was updated on October 13, 2026 and Prometheus Mobile for Maximo on September 27, 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.*