myNAVAC vs HVAC Tools PT Chart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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
HVAC Tools PT Chart
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Gauge is a field toolkit for HVAC and refrigeration technicians: a pressure-temperature chart for 10 refrigerants, superheat and subcooling calculators, troubleshooting checklists and a service call log with PDF reports. PT CHART - R-410A and R-22 free; R-134a, R-407C, R-404A, R-32, R-454B, R-290, R-438A and R-422D with Pro - Look up the saturation temperature for a pressure, or the pressure for a temperature - Scroll the full table from -40°F, with safety notes for the A2L (R-32, R-454B) and A3 (R-290) refrigerants CALCULATORS - Superheat: suction pressure and suction line temperature give the saturation temperature and the superheat - Subcooling: liquid line pressure and liquid line temperature - Temperature split: return and supply air - Ohm's Law: enter any two of volts, amps, ohms and watts - Pro: airflow (required CFM from BTU/h or tons and the temperature split), duct sizing (round and rectangular sizes from CFM and air velocity), capacitor check (measured against rated µF) and voltage drop (copper wire by AWG, one-way length, amps and supply voltage) Superheat, subcooling, temperature split, capacitor and voltage drop results are color-coded against typical ranges, with what to check next. SERVICE CALL LOG - Customer or address, complaint, system type, make and model - Suction and liquid pressure, superheat, subcooling, suction line, liquid line, supply and return air temperatures, compressor amps - Your diagnosis, the work performed, refrigerant type and amount, parts, notes, cost and time on the job - Free: up to 10 service calls. Pro: unlimited calls, search, and a PDF service report with your name and certification that you can share with the customer REFERENCE - Step-by-step checklists: AC not cooling (free), furnace not heating and heat pump not heating (Pro) - Typical ranges for superheat, subcooling, temperature split and compressor amps - Refrigerant facts: GWP, A2L or A3 safety class and phase-down status - System types, a copper wire ampacity table and an EPA 608 overview (certification types and key rules) AI ADVISOR (PRO) Describe a symptom or a set of readings and get a short written answer from an AI model. It sends only the message you type and needs an internet connection. AI answers can be wrong: check them against your own readings and the equipment manufacturer's data. GOOD TO KNOW - Gauge works in US units: °F, psig, CFM, inches, feet, AWG and pounds - The PT chart, calculators, reference and service log work without a connection GAUGE PRO Free: the PT chart for R-410A and R-22, the superheat, subcooling, temperature split and Ohm's Law calculators, up to 10 service calls, the AC checklist and the reference tables. Pro adds the other 8 refrigerants, the airflow, duct sizing, capacitor and voltage drop calculators, unlimited service calls with search and PDF reports, the furnace and heat pump checklists and the AI Advisor. In the US, Gauge Pro is $4.99 a month or $39.99 a year (US prices; other countries see their own price in the app). Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage them in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: myNAVAC at none against HVAC Tools PT Chart's 3. myNAVAC also leads on iOS requirement (12.0 vs 18). 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
Both are free to download. HVAC Tools PT Chart sells 3 in-app purchases, starting at $4.99 per month. myNAVAC asks for nothing beyond the download.
myNAVAC ships an update every 3 weeks, HVAC Tools PT Chart monthly. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | myNAVAC | HVAC Tools PT Chart |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (36 ratings) — better | — |
| Positive reviews | 16.1% of reviews | — |
| Number of ratings | 36 — better | — |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 18 |
| Further details — not scored | ||
| Size | 137 MB | 9 MB |
| Age rating | 17+ | 4+ |
| Developer | NAVAC Inc. | Karol Jaworski |
In-app purchases
myNAVAC
No in-app purchases
HVAC Tools PT Chart
- Gauge Pro$4.991 Month
- Gauge Pro1 Year trial$39.991 Year
- Gauge Pro$39.991 Year
Questions
Is myNAVAC free?
Is HVAC Tools PT Chart free?
Do myNAVAC or HVAC Tools PT Chart have ads?
Which is updated more often, myNAVAC or HVAC Tools PT Chart?
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