Comparison

OptiTools Mobile vs testo Smart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OptiTools Mobile

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
Read full description

OptiTools Mobile is an intuitive and easy-to-use Smartphone App which provides wireless configuration and monitoring of the Optidrive product range. Wireless operation is carried out via Bluetooth BLE and is available on any Optidrive when the OptiStickSmart is plugged into a drive or a drive network. PARAMETER TRANSFER Monitor and Edit individual Optidrive parameters in real-time or transfer complete parameter sets between an Optidrive and the Smartphone. Parameter sets can be send and received via Email and are fully compatible with OptiTools Studio PC software. OPTIDRIVE MONITOR AND CONTROL Monitor drive status, motor speed, motor current and motor power in real-time. When unlocked, the user can adjust motor speed, start the drive, stop the drive and reset trips from the Smartphone App.

About

testo Smart

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
Read full description

- All in one: The testo Smart App supports you with measurements on refrigeration, air conditioning, and heating systems, as well as in ensuring the safety and quality of food and frying oil, and in monitoring indoor climate and storage conditions. - Fast: Graphically descriptive display of measured values, e.g. as a table, for quick interpretation of results. - Efficient: Create digital measurement reports including. photos as PDF/ CSV files on site and send them via e-mail. The testo Smart App is compatible with the following Bluetooth®-enabled measuring instruments from Testo: - Thermal imager testo 860i for smartphones - All Testo Smart Probes - Digital manifolds testo 550s/557s/558s/550i/570s and testo 550/557 - Digital refrigerant scale testo 560i - Vacuum pump testo 565i - Flue gas analyzer testo 300/310 II/310 II EN - Vacuum gauge testo 552 - Clamp meter testo 770-3 - Volume flow hood testo 420 - Compact HVAC measuring instruments - Frying oil tester testo 270 BT - Temperature meter testo 110 Food - Dual purpose IR and penetration thermometer testo 104-IR BT - Data loggers 174 T BT & 174 H BT - Online data loggers testo 160, testo 162 & testo 164 GW Applications with the testo Smart App Refrigeration systems, air conditioning systems and heat pumps, heating systems, indoor air quality: - Leak test: Recording and analysis of the pressure drop curve. - Superheat and subcooling: Automatic determination of condensation and evaporation temperature and calculation of superheat / subcooling. - Target superheat: Automatic calculation of target superheat - Automatic refrigerant charging by weight, by superheat, by subcooling, and by target superheat - Vacuum measurement: Graphical progress display of the measurement with indication of start and differential value Indoor climate monitoring: - Indoor air quality: automatic calculation of the dew point and wet-bulb temperature - Temperature, humidity, lux, UV, pressure, CO2: the right data logger for every application – from a single solution to an online monitoring system" Ventilation systems: - Volume flow: After the intuitive input of the duct cross-section, the app calculates the volume flow fully automatically. - Diffuser measurements: simple parameterisation of the diffuser (dimensions and geometry), comparison of the volume flows of several diffusers when setting up a ventilation system, continuous and multi-point average calculation. Heating systems: - Flue gas measurement: Second screen function in combination with testo 300 - Measurement of gas flow and static gas pressure: Also possible parallel to the flue gas measurement (delta P) - Measurement of flow and return temperatures (delta T) Thermography: - Determining Delta T on heating, refrigeration/air conditioning, and industrial systems - Detecting hot/cold spots - Assessing the risk of mold Food safety: Temperature Control Points (CP/CCP): - Seamless documentation of measured values to fulfill HACCP specifications - Individually definable limit values and measurement comments within the App for each measurement point - Reporting and data export for regulatory requirements and internal quality assurance Frying oil quality: - Seamless documentation of measured values as well as calibration and adjustment of the measurement instrument - Individually definable limit values and measurement comments within the App for each measurement point - Reporting and data export for regulatory requirements and internal quality assurance --------------------------------------------------------- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.testo.com/en/company/privacy-policy-app

Screenshots

OptiTools Mobile4 screens
testo Smart4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
OptiTools Mobile versus testo Smart: the parameters behind the verdict, then further details
ParameterOptiTools Mobiletesto Smart
PriceFreeFree
Rating3.5 (2 ratings) — better2.7 (167 ratings)
Positive reviews100.0% of reviews — better16.3% of reviews
Number of ratings2167 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS11 — better18.0
Further details — not scored
Size59 MB195 MB
Age rating4+4+
DeveloperInvertek Drives LimitedTesto SE & Co. KGaA

Customer experience

OptiTools Mobile

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

testo Smart

All ratings167 ratings
Positive35.9%
Neutral13.2%
Negative50.9%
Written reviews153 reviews
Positive16.3%
Neutral17.6%
Negative66.0%

Bugs and requests

OptiTools Mobile

Not enough reviews yet to summarise bugs or requests.

testo Smart

Reported bugs

5 issues
  • 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

7 requests
  • 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
Show 2 more
  • Improve multi-probe support
  • Integrate more features from physical devices

In-app purchases

None

OptiTools Mobile

No in-app purchases

5 purchases

testo Smart

Subscriptions4
  • Multi-site measurement7 Days trial$6.991 Month
  • Air balancing7 Days trial$9.991 Month
  • Multi-site measurement$69.901 Year
Show 1 more
  • Air balancing$99.901 Year
One-time1
  • Logging digital manifold$44.99

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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