testo Smart vs Ductulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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- 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
Ductulator
This app provides a simple and efficient tool for calculating the dimensions of square ventilation ducts. It's designed for engineers, architects, and contractors to generate data for mechanical ventilation, cooling, and HVAC projects. Quickly validate residential and commercial solutions with this easy-to-use calculator.
- Calculate equivalent round diameter of square ducts
- Convert square duct dimensions by volume ratio
- Provide metric equivalence
- Validate residential and commercial solutions
- Designed for engineers and architects
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Offrez-vous un outil de calcul simple et efficace pour calculer les dimensions de conduit de ventilation carré ! Destinée aux ingénieurs, aux architectes, aux entrepreneurs et à leurs équipes d’experts, notre application unique est un incontournable sur le chantier. Fonctionnel en tout temps, notre instrument de travail génère les données dont vous avez besoin pour réaliser vos projets de ventilation mécanique, d’aération du ventilateur de refroidissement, de conception générale pour les conduits de climatisation et de chauffage. Facile d’utilisation et optimisé pour tous les types d’éclairage ou d’écrans, notre Ductulator réinventé vous permettra de valider rapidement vos solutions résidentielles et commerciales. Offrez-vous aujourd’hui notre calculatrice conçue spécialement pour: -Calculer l'équivalent en rond (Diamètre) d'un conduit carré de ventilation -Convertir des dimensions de conduit carré par un rapport de volume d'une nouvelle dimension, amincie selon un ratio spécifique. -Donner l’équivalence métrique Parce que mesurer et valider vos calculs font partie du métier, le nôtre est de vous offrir ce qu’il y a de meilleur sur le marché! Faites le calcul!
Screenshots
Verdict
The clearest difference is rating: testo Smart at 2.7 against Ductulator's 1.0. testo Smart also leads on ratings volume (167 vs 2) and review sentiment (16% vs 0%). Ductulator's advantage is in-app purchases (none vs 5) and update cadence (weekly vs every 2 months). On price, 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
Both are free to download. testo Smart sells 5 in-app purchases, starting at $6.99 per month. Ductulator asks for nothing beyond the download.
testo Smart holds the better App Store score, 2.7 against 1.0. 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: 16% of testo Smart's written reviews are positive against 0% of Ductulator's.
testo Smart ships an update every 2 months, Ductulator weekly. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.
| Parameter | testo Smart | Ductulator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (167 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 16.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 167 — better | 2 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 195 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Testo SE & Co. KGaA | Simon Leroux |
Customer experience
testo Smart
Ductulator
Bugs and 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
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- Improve multi-probe support
- Integrate more features from physical devices
Ductulator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
testo Smart
- Multi-site measurement7 Days trial$6.991 Month
- Air balancing7 Days trial$9.991 Month
- Multi-site measurement$69.901 Year
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- Air balancing$99.901 Year
- Logging digital manifold$44.99
Ductulator
No in-app purchases
Questions
Is testo Smart free?
Is Ductulator free?
Which has better reviews, testo Smart or Ductulator?
Do testo Smart or Ductulator have ads?
Which is updated more often, testo Smart or Ductulator?
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