Comparison

Fluke Connect 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

Fluke Connect

Wirelessly connect to compatible tools to capture live measurements and data remotely. Analyze trends, generate reports with notes and photos, and receive instant alerts for performance changes. Store and access your data securely in the cloud.

Highlights
  • Live tool readings
  • Remote data capture
  • Real-time trend analysis
  • Cloud data storage
  • Mobile report generation
  • Instant performance alerts
Read full description

Connect your Fluke tools, capture live data, and share results instantly—all from your mobile device. Key Features · Live Readings: Collect up to 6 tool measurements remotely and safely. · Trend & Graph: Uncover hidden issues early with real-time data trends. · Cloud Storage: Organize, sync, and access data anytime, anywhere. · Mobile Reports: Create and share reports with measurements, notes, and photos. · Alerts & Monitoring: Receive instant notifications when performance changes.

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

Fluke Connect4 screens
testo Smart4 screens

Verdict

The call

The clearest difference is rating: Fluke Connect at 4.4 against testo Smart's 2.7. Fluke Connect also leads on in-app purchases (none vs 5) and iOS requirement (13.1 vs 18.0). testo Smart's advantage is review sentiment (16% vs 6%). On price, ratings volume, update cadence and ads 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. Fluke Connect asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fluke Connect holds the better App Store score, 4.4 against 2.7. Both are backed by a comparable volume of ratings — 286 and 167 respectively. Written reviews complicate that: 6% of Fluke Connect's written reviews are positive against 16% of testo Smart's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Fluke Connect ships an update every 6 weeks, testo Smart every 2 months. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard5 real differences · 5 level
Fluke Connect versus testo Smart: the parameters behind the verdict, then further details
ParameterFluke Connecttesto Smart
PriceFreeFree
Rating4.4 (286 ratings) — better2.7 (167 ratings)
Positive reviews5.8% of reviews16.3% of reviews — better
Number of ratings286 — better167
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.1 — better18.0
Further details — not scored
Size162 MB195 MB
Age rating12+4+
DeveloperFluke Corp.Testo SE & Co. KGaA

Customer experience

Fluke Connect

All ratings286 ratings
Positive83.9%
Neutral3.1%
Negative12.9%
Written reviews190 reviews
Positive5.8%
Neutral6.3%
Negative87.9%

testo Smart

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

Bugs and requests

Fluke Connect

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

Fluke Connect

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 Fluke Connect free?
Fluke Connect 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, Fluke Connect or testo Smart?
Fluke Connect is rated higher. Fluke Connect averages 4.4 out of 5 from 286 ratings, while testo Smart averages 2.7 from 167 ratings.
Do Fluke Connect or testo Smart have ads?
Neither Fluke Connect nor testo Smart shows ads.
Which is updated more often, Fluke Connect or testo Smart?
Fluke Connect ships an update every 6 weeks, and testo Smart every 2 months. Most recently, Fluke Connect was updated on September 22, 2026 and testo Smart on September 20, 2026.

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