CoolCalc vs Network Radar Ultra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Network Radar Ultra
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Network Radar Ultra finds devices on your local network and clearly shows what is actually reachable: IP addresses, device types, open ports, web interfaces, and local services. Start a scan on the connected WiFi network and identify routers, repeaters, cameras, printers, NAS, Sonos, Apple TV, smart home devices, KNX/IP, Home Assistant, and unknown devices. Bonjour/mDNS, UPnP/SSDP, ONVIF, HTTP hints, and TCP port checks are combined so names, models, and device types appear as cleanly as possible. The analysis gives you a clear network summary: • found devices and device types • open ports and web interfaces • Bonjour and UPnP/SSDP services • ONVIF/RTSP hints for cameras • notable or unknown devices • scan history with comparison The tools section includes practical network diagnostics: • reachability check • port check and port range check • DNS records and reverse DNS • HTTP check and HTTP headers • SSL/TLS certificate check • subnet calculator • IP info • Wake-on-LAN Scans and saved results stay local on your device. Public IP and IP info lookups use HTTPS requests to external services only when you start them. Network Radar Ultra is made for people who want to understand their WiFi without a command line, expert knowledge, or complicated network tools.
Screenshots
Verdict
The clearest difference is ads: CoolCalc at none against Network Radar Ultra's shown. CoolCalc also leads on iOS requirement (16.0 vs 18.0). On price, in-app purchases 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. CoolCalc sells 3 in-app purchases, starting at $4.99 per month and Network Radar Ultra sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | CoolCalc | Network Radar Ultra |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | — |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 30 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | 杰 陈 | Kurenz Music GbR |
In-app purchases
CoolCalc
- CoolCalc Pro Monthly$4.991 Month
- CoolCalc Pro Yearly3 Days trial$19.991 Year
- CoolCalc Pro Lifetime$29.99
Network Radar Ultra
- Remove Ads$1.99
Questions
Is CoolCalc free?
Is Network Radar Ultra free?
Do CoolCalc or Network Radar Ultra have ads?
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