Comparison

testo 330i App vs YJACK VIEW

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

Head to head
About

testo 330i App

Control your testo 330i flue gas analyzer remotely from your smartphone or tablet. View live measurement values, create detailed PDF reports with photos and your logo, and send them directly from the field. Offers a graphical trend view and data export options.

Highlights
  • Complete analyzer control via smartphone/tablet
  • Intuitive touchscreen handling
  • Graphical trend view
  • PDF report creation
  • Export measurement values (CSV, ZIV)
  • Insert photos and comments into reports
  • Bluetooth connectivity (20m range)
Features
Read full description

Install our free App on your smartphone / tablet for operating the new testo 330i right where you happen to be. So, the measurement values are always in sight during adjustment of the system. The report, with customer name, photos and your logo, can be sent to your office or directly to the customer as a simple and fast documentation, right after the measurement - Complete control of the analyzer testo 330i via Smartphone and tablet - Easy and intuitive handling on the touchscreen - Graphical trend view to check changes over time - Creation of PDF reports or export of measurement values in csv (Excel) or ZIV format - Report sent as an e-mail straight from the measuring location - Insert photos of the measurement site and comments into the documentation - Range of approx. 20 m without obstruction via Bluetooth (This app can be used with the testo 330i flue gas analyzer only)

About

YJACK VIEW

This app provides a comprehensive HVAC/R diagnostic solution by integrating with specialized hardware. It allows users to view live data, create and share service reports, and perform detailed system analysis for pressure, temperature, evacuation, and more.

Highlights
  • Live data monitoring
  • Customizable PDF service reports
  • Enhanced datalogging
  • Pressure and temperature analysis
  • Evacuation monitoring
  • Psychrometric analysis
  • Electrical readings
Features
Read full description

YJACK VIEW® provides seamless integration with YJACK® and TITAN® devices offering a complete HVAC/R diagnostic solution (hardware purchase required). Supported Hardware: TITANMAX® Digital Manifold YJACK PATH® Range Extender YJACK® Temperature Clamp & Strap YJACK DEW® Psychrometer YJACK PRESS® Pressure Gauge YJACK VAC® Vacuum Gauge YJACK AMP® Current Probe YJACK MANO® Manometer YJACK FLOW® Anemometer P51-870 TITAN® Digital Manifold 68864 Wireless Refrigerant Scale 6860x Combustion Analyzer Receive and analyze live data including pressures, temperatures, vacuum level, psychrometric data, duct air flow and speed, duct pressure drops, fuel pressure settings, weight readings, and electrical current. CREATE/MANAGE/SHARE SERVICE REPORTS Create customizable PDF reports of system measurements and service information while storing past jobs and reports. The user profile feature stores user information that is automatically generated in the header of each report. ENHANCED DATALOGGING Record data from one or all current session types as desired. Choose from a variety of sampling rates depending on user need. Live updates to selected devices, units, elevation, refrigerant selection appended to existing data logs. Start and stop datalogging at will, save for later, or share via email for remote analysis. PRESSURE / TEMPERATURE View System Pressure and Temperature data on up to 4 systems at once. Select refrigerants for calculating system properties including saturation temperatures and system superheat/subcooling. Manipulate data view types, including large number format, analog gauge (pressure only) or line graph. STATIC PRESSURE Select and record pressure drops across multiple different locations like the filter, the coil, external static pressures, and gas pressure readings to upload into a report for the customer all in one session. EVACUATION Monitor system vacuum as reported by a TITAN® digital manifold, wired vacuum sensor or the YJACK VAC® Wireless Vacuum Gauge. Adjustable Vacuum Pressure Target and Hold timer ensures all refrigerant, moisture, and non-condensable gases are removed during evacuation. LEAK TEST Monitor pressure changes during pressurized leak testing to verify that system is tight. PSYCHROMETRICS Analyze psychrometric data on up to 4 systems at once. Ensure maximum home comfort through wireless supply and return relative humidity, dry bulb, wet bulb, dew point temperatures and enthalpy calculations. Compare system rated capacity to actual output for overall system efficiency. CHARGING & RECOVERY Display scale readings from the Wireless Charging Scale to accurately charge systems or determine system charge amount through recovery. View readings from your Wireless Refrigerant Scale with simultaneous gross weight and weight change fields. ELECTRICAL Electrical session displays readings from YJACK AMP® Wireless Current Probe while monitoring AC current and inrush. These readings are used for calculating power draw and EER. ANEMOMETER Anemometer session displays readings from YJACK FLOW® Wireless Anemometer Probe. Quick one-line verification from duct-to-duct comparison or full system calculations using AHRI40 standard for air measurement, to compare installed system airflow to published standard. AVAILABLE DEVICES Monitor the data and battery life of your devices. Create a perimeter of devices by placing YJACK PATH® devices periodically around the work area, boosting the signal of all nearby devices. COMBUSTION Capture results from your combustion analyzer and include the data in your job report.

Screenshots

testo 330i App4 screens
YJACK VIEW4 screens

Verdict

The call

The clearest difference is ratings volume: YJACK VIEW at 19 against testo 330i App's 2. testo 330i App's advantage is iOS requirement (12 vs 15.6). On price, rating, review sentiment and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.0 for testo 330i App against 2.9 for YJACK VIEW. That said, the two scores are not equally well evidenced: YJACK VIEW has 19 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 38% of testo 330i App's written reviews are positive against 30% of YJACK VIEW's.

UpkeepUpdate frequency

testo 330i App ships an update every 4 months, YJACK VIEW every 5 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
testo 330i App versus YJACK VIEW: the parameters behind the verdict, then further details
Parametertesto 330i AppYJACK VIEW
PriceFreeFree
Rating3.0 (2 ratings) — better2.9 (19 ratings)
Positive reviews37.5% of reviews — better30.0% of reviews
Number of ratings219 — better
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12 — better15.6
Further details — not scored
Size52 MB18 MB
Age rating4+4+
DeveloperTesto SE & Co. KGaAYELLOW JACKET

Customer experience

testo 330i App

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

YJACK VIEW

All ratings19 ratings
Positive42.1%
Neutral10.5%
Negative47.4%
Written reviews10 reviews
Positive30.0%
Neutral10.0%
Negative60.0%

In-app purchases

None

testo 330i App

No in-app purchases

None

YJACK VIEW

No in-app purchases

Questions

Is testo 330i App free?
testo 330i App is free to download, with no in-app purchases.
Is YJACK VIEW free?
YJACK VIEW is free to download, with no in-app purchases.
Which has better reviews, testo 330i App or YJACK VIEW?
testo 330i App is rated higher. testo 330i App averages 3.0 out of 5 from 2 ratings, while YJACK VIEW averages 2.9 from 19 ratings.
Do testo 330i App or YJACK VIEW have ads?
Neither testo 330i App nor YJACK VIEW shows ads.
Which is updated more often, testo 330i App or YJACK VIEW?
testo 330i App ships an update every 4 months, and YJACK VIEW every 5 months. Most recently, testo 330i App was updated on October 12, 2026 and YJACK VIEW on October 10, 2026.

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