# testo Smart vs FormAssembly Mobile

The clearest difference is rating: FormAssembly Mobile at 5.0 against testo Smart's 2.7. FormAssembly Mobile also leads on in-app purchases (none vs 5) and update cadence (fortnightly vs every 2 months). testo Smart's advantage is ratings volume (167 vs 4). On price, 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. FormAssembly Mobile asks for nothing beyond the download.

FormAssembly Mobile holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: testo Smart has 167 ratings behind it against 4, so its average is the more settled of the two.

testo Smart ships an update every 2 months, FormAssembly Mobile fortnightly. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | testo Smart | FormAssembly Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (167 ratings)](https://appshunter.io/ios/app/testo-smart/id1482139629/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/formassembly-mobile/id6443781731/reviews)** |
| Number of ratings | **167** | 4 |
| Positive reviews | 16.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 195 MB | 9 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) | [FormAssembly, inc.](https://appshunter.io/developer/1034500841) |

## 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


### FormAssembly Mobile

[App page](https://appshunter.io/ios/app/formassembly-mobile/id6443781731)

Collect data and upload files on the go, even without an internet connection. Securely sync your information to your account once you're back online. Ideal for remote data capture and on-site work.

**Highlights:** Offline data capture, Offline file uploads, SAML login for secure access, Sync data to FormAssembly account, On-the-go data gathering

**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 FormAssembly Mobile free?

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

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

FormAssembly Mobile is rated higher. testo Smart averages 2.7 out of 5 from 167 ratings, while FormAssembly Mobile averages 5.0 from 4 ratings.

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

Neither testo Smart nor FormAssembly Mobile shows ads.

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

testo Smart ships an update every 2 months, and FormAssembly Mobile fortnightly. Most recently, testo Smart was updated on October 13, 2026 and FormAssembly Mobile on October 1, 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.*