# FFT Plot vs Decibel meter for personal use

The clearest difference is price: Decibel meter for personal use at Free against FFT Plot's $9.99. Decibel meter for personal use also leads on update cadence (every 5 weeks vs every 17 months) and review sentiment (100% vs 84%). FFT Plot's advantage is in-app purchases (none vs 1) and rating (4.8 vs 4.5). On ads and device support there is nothing between them.

Decibel meter for personal use is free to download; FFT Plot costs $9.99 up front. Decibel meter for personal use sells 1 in-app purchase, starting at $9.99 per month. FFT Plot asks for nothing beyond the download.

FFT Plot holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 90 and 28 respectively. Written reviews complicate that: 84% of FFT Plot's written reviews are positive against 100% of Decibel meter for personal use's, so the app with the better star average is not the one people write more warmly about.

FFT Plot ships an update every 17 months, Decibel meter for personal use every 5 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | FFT Plot | Decibel meter for personal use |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (90 ratings)](https://appshunter.io/ios/app/fft-plot/id569468015/reviews)** | [4.5 (28 ratings)](https://appshunter.io/ios/app/decibel-meter-for-personal-use/id6448749318/reviews) |
| Number of ratings | **90** | 28 |
| Positive reviews | 84.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 5 weeks** |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 18 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ONYX Apps](https://appshunter.io/developer/356553882) | [Svetlana Rabosh](https://appshunter.io/developer/1614133369) |

## What reviewers say

### FFT Plot

[App page](https://appshunter.io/ios/app/fft-plot/id569468015)

This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.

**Highlights:** Real-time audio analysis, Frequency detection, Averaging options, Window functions, Linear and logarithmic scales, Weighting options, Draggable cursors

**In-app purchases:** none


### Decibel meter for personal use

[App page](https://appshunter.io/ios/app/decibel-meter-for-personal-use/id6448749318)

This app measures ambient noise levels and offers features to suppress unwanted sounds like traffic and conversations. It provides real-time analysis, background operation, and historical data for a comprehensive understanding of your sound environment.

**Highlights:** Noise level measurement, Background noise suppression, Background measurement operation, Peak and average noise level calculation, Spectral noise analysis, Measurement history access, UI design for beginners and pros

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter+ | $9.99 | per month |


## Frequently asked questions

### Is FFT Plot free?

FFT Plot costs $9.99, with no in-app purchases.

### Is Decibel meter for personal use free?

Decibel meter for personal use is free to download, with in-app purchases available.

### Which has better reviews, FFT Plot or Decibel meter for personal use?

FFT Plot is rated higher. FFT Plot averages 4.8 out of 5 from 90 ratings, while Decibel meter for personal use averages 4.5 from 28 ratings.

### Do FFT Plot or Decibel meter for personal use have ads?

Neither FFT Plot nor Decibel meter for personal use shows ads.

### Which is updated more often, FFT Plot or Decibel meter for personal use?

FFT Plot ships an update every 17 months, and Decibel meter for personal use every 5 weeks. Most recently, FFT Plot was updated on September 23, 2026 and Decibel meter for personal use on September 16, 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.*