Field Audio Recording Tool vs CoolCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Field Audio Recording Tool
This utility app allows for quick audio capture on iOS devices. It is designed to start recording immediately upon launch, ensuring no sound is missed. Ideal for capturing spontaneous audio moments.
- Rapid recording on app launch
- Capture fleeting sound moments
- iOS compatible
- Simple interface
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Field Audio Recording Tool for iOS. Rapidly start recording on app launch to record the most fleeting moments of sound.
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
Screenshots
Verdict
The clearest difference is in-app purchases: Field Audio Recording Tool at none against CoolCalc's 3. Field Audio Recording Tool also leads on update cadence (every 5 days vs every 2 weeks) and device support (3 vs 1). On price, rating, ratings volume 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
Both are free to download. CoolCalc sells 3 in-app purchases, starting at $4.99 per month. Field Audio Recording Tool asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Field Audio Recording Tool against 5.0 for CoolCalc. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Field Audio Recording Tool ships an update every 5 days, CoolCalc every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Field Audio Recording Tool | CoolCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 59 MB | 30 MB |
| Age rating | 9+ | 4+ |
| Developer | Troy Gustafson | 杰 陈 |
Customer experience
Field Audio Recording Tool
CoolCalc
In-app purchases
Field Audio Recording Tool
No in-app purchases
CoolCalc
- CoolCalc Pro Monthly$4.991 Month
- CoolCalc Pro Yearly3 Days trial$19.991 Year
- CoolCalc Pro Lifetime$29.99
Questions
Is Field Audio Recording Tool free?
Is CoolCalc free?
Which has better reviews, Field Audio Recording Tool or CoolCalc?
Do Field Audio Recording Tool or CoolCalc have ads?
Which is updated more often, Field Audio Recording Tool or CoolCalc?
Other comparisons
