testo Smart

Contains ads
4.9
1.48K reviews
500K+
Downloads
Content rating
Rated for 3+
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About this app

- 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
Updated on
May 22, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App info and performance, and Device or other IDs
This app may collect these data types
App info and performance
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.8
1.41K reviews
Mariusz Przybytek
June 2, 2025
I'm sure it is a very useful addition to the testo equipment, but I need to buy a microscope to be able to see what the app actually says. Guys! Really?! The a/c split installs are often done in full sun and your app is hardly legible in a indoor. Come on, ask some free ai software to code some graphically pleasing interface.
Did you find this helpful?
Testo SE + Co.KGaA
June 2, 2025
Hallo Herr Przybytek, vielen Dank für Ihr Feedback! Wir wissen, wie wichtig gute Lesbarkeit – auch bei Sonnenlicht – ist und arbeiten an einer besser sichtbaren Darstellung. Geht es Ihnen "nur" um die Schriftgröße oder auch um den Kontrast, z.B. über einen Dark Mode? Gerne per Mail an appsupport@testo.de Ihr Testo App Team
Jon
April 22, 2025
kept trying to force me to update saying it would only take a few minutes. I kept declining because I'm busy working and don't see any reason for the update since my gages were working just fine. unfortunately it asks you to update the firmware every single time you do something and unfortunately I accidentally accepted while evacuating a system. Now I've been completely locked out of my equipment for the last 30 minutes, it isn't even 50% done with its update and I need to FINISH MY JOB!
Did you find this helpful?
Testo SE + Co.KGaA
April 23, 2025
Hi Jon, we understand that updates can be a bit of a nuisance, but they keep your devices running smoothly – like a service for your car. If they're skipped for a while, it can take longer to catch up. Perhaps next time, it might work better during a quiet moment after work. Thank you for your feedback and patience! Your Testo App Team
Siphakamiso Mbaliswana
April 8, 2025
The app keeps crashing. It worked momentarily and suddenly stopped. I've uninstalled and reinstalled a couple of times but keep stopping or crashing.
Did you find this helpful?
Testo SE + Co.KGaA
April 9, 2025
Hello Mr. Mbaliswana, Could you please let us know if this problem started occurring after the latest update? Does the app crash immediately upon opening, or does it happen after performing a specific action? To assist you further, we kindly ask you to contact us directly at appsupport@testo.de with more details about the issue. Thank you.

What’s new

- Simplified second screen connection with the testo 300 flue gas analyzer
- New feature for adjusting the manual scale in thermography applications
- Minor bugs have been fixed