# FCD vs Sound Meter

The clearest difference is device support: FCD at 3 against Sound Meter's 1. FCD also leads on iOS requirement (14.4 vs 16.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for FCD against 5.0 for Sound Meter. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

FCD ships an update every 7 months, Sound Meter every 11 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FCD | Sound Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fcd-tr1-adapter-application/id1438537309/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sound-meter-db-level-check/id6746741261/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 2 MB | 5 MB |
| Requires iOS | **14.4** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ross Morrison](https://appshunter.io/developer/1438537308) | [Chang Keun Jung](https://appshunter.io/developer/1813307401) |

## What reviewers say

### FCD

[App page](https://appshunter.io/ios/app/fcd-tr1-adapter-application/id1438537309)

This application calibrates engine gauges for turboprop aircraft using an iPad. It connects via Bluetooth to a specialized adapter plugged into the back of the gauges, allowing full control of calibration parameters and download of flight log data.

**Highlights:** iPad-based calibration, Bluetooth connectivity, Control calibration parameters, Download flight log data, Supports TR1 engine gauges

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Meter

[App page](https://appshunter.io/ios/app/sound-meter-db-level-check/id6746741261)

Measure and record environmental noise levels in real-time. Tag recordings with GPS, view sound history with min/max/average values, and analyze the sound spectrum. Export data as CSV or audio files, with offline functionality.

**Highlights:** Real-time dB measurement, GPS tagging for recordings, Local log management, Min, max, and average values, FFT spectrum analysis, CSV and audio export, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FCD free?

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

### Is Sound Meter free?

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

### Which has better reviews, FCD or Sound Meter?

FCD and Sound Meter are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do FCD or Sound Meter have ads?

Neither FCD nor Sound Meter shows ads.

### Which is updated more often, FCD or Sound Meter?

FCD ships an update every 7 months, and Sound Meter every 11 months. Most recently, FCD was updated on November 2, 2026 and Sound Meter on October 30, 2026.

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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.*