# MFA vs Sound Level · Baro

The clearest difference is price: MFA at Free against Sound Level · Baro's $0.99. MFA also leads on iOS requirement (9.3 vs 13.0). Sound Level · Baro's advantage is update cadence (every 3 days vs fortnightly). On ads, in-app purchases and device support there is nothing between them.

MFA is free to download; Sound Level · Baro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MFA ships an update fortnightly, Sound Level · Baro every 3 days. The most recent releases landed on October 26, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | MFA | Sound Level · Baro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sound-level-baro/id6779881299/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | — | Free |
| Size | 29 MB | 23 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Isao Uchida](https://appshunter.io/developer/1341625060) | [Euiseok Kim](https://appshunter.io/developer/1879633122) |

## What reviewers say

### MFA

[App page](https://appshunter.io/ios/app/mfa/id1341625151)

**In-app purchases:** none


### Sound Level · Baro

[App page](https://appshunter.io/ios/app/sound-level-baro/id6779881299)

This app measures ambient sound levels in decibels, displaying them in a large, easy-to-read format with color-coded zones for hearing safety. It operates entirely offline and prioritizes user privacy by processing all audio data on the device without recording or uploading anything.

**Highlights:** Live dB readout, Color-coded hearing safety zones, Session min, average, and max, Built-in calibration, Large, readable display, Offline operation, Privacy-focused design

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

**In-app purchases:** none


## Frequently asked questions

### Is MFA free?

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

### Is Sound Level · Baro free?

Sound Level · Baro costs $0.99, with no in-app purchases.

### Do MFA or Sound Level · Baro have ads?

Neither MFA nor Sound Level · Baro shows ads.

### Which is updated more often, MFA or Sound Level · Baro?

MFA ships an update fortnightly, and Sound Level · Baro every 3 days. Most recently, MFA was updated on October 26, 2026 and Sound Level · Baro on November 1, 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.*