# Sound Calibrator vs TC

The clearest difference is price: Sound Calibrator at Free against TC's $1.99. Sound Calibrator also leads on iOS requirement (10.1 vs 13.0). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Sound Calibrator is free to download; TC costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sound Calibrator | TC |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 2 MB | 12 MB |
| Requires iOS | **10.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Turnkey Instruments Ltd](https://appshunter.io/developer/849010372) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### Sound Calibrator

[App page](https://appshunter.io/ios/app/sound-calibrator/id1187963778)

Calibrate your Turnkey idB Noise Monitor or iVibe using a 94 dB calibrator. This app reads data from your noise monitor and calibrates the instrument. Log in with your AirQWeb credentials to access your registered devices and begin the calibration process.

**Highlights:** Microphone calibration, Connects to Turnkey idB Noise Monitor, Connects to iVibe, Uses 94 dB calibrator, Reads instrument data, AirQWeb login integration

**Features:** macOS Compatibility

**In-app purchases:** none


### TC

[App page](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500)

This utility app provides quick and accurate conversions between resistance, potential, and temperature for various thermocouples and RTDs. It supports offline use, temperature recording with export, and offers an intuitive interface for field technicians and engineers.

**Highlights:** Thermocouple and RTD conversion, Supports multiple sensor types, Offline functionality, Temperature recording and charting, Export data to Excel, Intuitive user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sound Calibrator free?

Sound Calibrator is free to download, with no in-app purchases.

### Is TC free?

TC costs $1.99, with no in-app purchases.

### Do Sound Calibrator or TC have ads?

Neither Sound Calibrator nor TC shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*