Comparison

myNAVAC vs CoolCalc

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

Head to head
About

myNAVAC

Connect to and manage NAVAC brand IoT measurement devices via Bluetooth. View real-time data, control settings remotely, and record measurements. Analyze data with process curves and tables, then export reports in Excel or PDF.

Highlights
  • Bluetooth device connection
  • Real-time data display
  • Remote control and settings
  • Data recording and storage
  • Process curve and table view
  • Exportable measurement reports (Excel/PDF)
Features
Read full description

Application introduction(testing mode) This program is applied to the Internet of Things platform products under the NAVAC brand, a professional application measurement program, which can quickly match and connect to single or multiple products through Bluetooth search. View and manage the measurement data of various products and more efficiently. Function 1. Smart phone displays the measured value in real time 2. Remote control and setting 3. Record and save the data required for monitoring and store it in the mobile phone 4. The display of measured value can choose the process curve and table form, to display the data change of the system more comprehensively. 5. The measurement results can be exported to measurement reports in EXCEL or PDF format, and sent out by e-mail or other means 6. High-quality products and services, you can view relevant product manuals, product operation videos, FAQs and information feedback on the APP Use conditions 1. The products that need to be connected are the internet of things platform products under the NAVAC brand

About

CoolCalc

This offline toolkit for service technicians provides essential HVAC calculations, job documentation, and professional PDF reporting. It supports A2L refrigerants and prioritizes user privacy with no account or cloud storage required.

Highlights
  • Offline HVAC calculations
  • PT Chart and Charge Check
  • Duct Sizing and Airflow Calcs
  • Capacitor and Refrigerant Log
  • Professional PDF report generation
  • A2L refrigerant support
  • Privacy-focused, no account needed
Features
Read full description

CoolCalc is an offline HVAC field kit for service technicians. Check the numbers, save the work, and turn a service visit into a clear PDF report—right on your iPhone. TOOLS FOR THE CALL • PT Chart: pressure-temperature lookup for R-410A, R-22, R-32, R-454B and more, with bubble and dew values where applicable. • Charge Check: calculate superheat and subcooling, including an optional target superheat estimate for fixed-orifice systems. • Duct Sizer 2.0: size round or rectangular ducts and review friction, velocity, and fitting losses. • Airflow and psychrometrics: quick CFM, BTU, ΔT, tons, ACH, wet-bulb, dew point, and enthalpy calculations. • Diagnostics: static pressure, capacitor checks, electrical calculations, gas-heating checks, and a manual system summary. • Refrigerant service: log charge added or recovered and check recovery cylinder fill. FROM READING TO REPORT Save supported results to a job, add photos and notes, record customer and system details, and generate a PDF service report on device. Share it through the iOS share sheet when you're ready. A2L AND FIELD REFERENCES Look up refrigerant PT data and find safety-class information, unit conversions, formulas, and A2L service reminders. Always verify readings and procedures against the equipment manufacturer's instructions and applicable codes. FREE TO START. PRO WHEN YOU NEED MORE. Common-refrigerant PT and charge checks are free. Advanced calculations and job documentation have free-use limits. Pro unlocks unlimited advanced calculations, jobs, and PDF exports, plus more photos per job and the full refrigerant reference. Choose a lifetime purchase or a subscription in the app. NO ACCOUNT REQUIRED Your job records, photos, and reports are stored on your device unless you choose to share them. Core field calculations and PDF creation work without a cellular signal. Terms of Use (EULA): https://sites.google.com/view/terms-of-use-for-coolcalc Privacy Policy: https://sites.google.com/view/privacypolicyforcoolcalc

Screenshots

myNAVAC3 screens
CoolCalc4 screens

Verdict

The call

The clearest difference is rating: CoolCalc at 5.0 against myNAVAC's 2.3. myNAVAC's advantage is in-app purchases (none vs 3) and ratings volume (35 vs 1). 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. CoolCalc sells 3 in-app purchases, starting at $4.99 per month. myNAVAC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CoolCalc holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: myNAVAC has 35 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

myNAVAC ships an update every 3 weeks, CoolCalc every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 5 level
myNAVAC versus CoolCalc: the parameters behind the verdict, then further details
ParametermyNAVACCoolCalc
PriceFreeFree
Rating2.3 (35 ratings)5.0 (1 ratings) — better
Positive reviews16.1% of reviews—
Number of ratings35 — better1
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better16.0
Further details — not scored
Size137 MB30 MB
Age rating17+4+
DeveloperNAVAC Inc.杰 陈

Customer experience

myNAVAC

All ratings32 ratings
Positive28.1%
Neutral6.3%
Negative65.6%
Written reviews31 reviews
Positive16.1%
Neutral6.5%
Negative77.4%

CoolCalc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

myNAVAC

No in-app purchases

3 purchases

CoolCalc

Subscriptions2
  • CoolCalc Pro Monthly$4.991 Month
  • CoolCalc Pro Yearly3 Days trial$19.991 Year
One-time1
  • CoolCalc Pro Lifetime$29.99

Questions

Is myNAVAC free?
myNAVAC is free to download, with no in-app purchases.
Is CoolCalc free?
CoolCalc is free to download, with in-app purchases available.
Which has better reviews, myNAVAC or CoolCalc?
CoolCalc is rated higher. myNAVAC averages 2.3 out of 5 from 35 ratings, while CoolCalc averages 5.0 from 1 ratings.
Do myNAVAC or CoolCalc have ads?
Neither myNAVAC nor CoolCalc shows ads.
Which is updated more often, myNAVAC or CoolCalc?
myNAVAC ships an update every 3 weeks, and CoolCalc every 2 weeks. Most recently, myNAVAC was updated on October 24, 2026 and CoolCalc on October 28, 2026.

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