# Flatter vs Sound Meter

The clearest difference is ads: Sound Meter at none against Flatter's shown. Flatter's advantage is update cadence (fortnightly vs every 11 months) and iOS requirement (12.0 vs 16.6). On price, in-app purchases and device support there is nothing between them.

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

Flatter ships an update fortnightly, Sound Meter every 11 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Flatter | Sound Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sound-meter-db-level-check/id6746741261/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 11 months |
| Monetization | — | Free |
| Size | 24 MB | 5 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jeong-soo Park](https://appshunter.io/developer/1248341387) | [Chang Keun Jung](https://appshunter.io/developer/1813307401) |

## What reviewers say

### Flatter

[App page](https://appshunter.io/ios/app/flatter-level/id1248341388)

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

**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 Flatter free?

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

### Is Sound Meter free?

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

### Do Flatter or Sound Meter have ads?

Flatter shows ads; Sound Meter does not.

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

Flatter ships an update fortnightly, and Sound Meter every 11 months. Most recently, Flatter was updated on October 14, 2026 and Sound Meter on October 12, 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.*