# AudioTools, dB, Sound & Audio vs FFT Plot

The clearest difference is price: FFT Plot at $9.99 against AudioTools, dB, Sound & Audio's $19.99. FFT Plot also leads on in-app purchases (none vs 11) and review sentiment (84% vs 75%). AudioTools, dB, Sound & Audio's advantage is update cadence (fortnightly vs every 17 months) and ratings volume (5.1K vs 90). On rating, ads and device support there is nothing between them.

AudioTools, dB, Sound & Audio costs $19.99 and FFT Plot $9.99 up front. AudioTools, dB, Sound & Audio sells 11 in-app purchases, starting at $9.99 per month. FFT Plot asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for AudioTools, dB, Sound & Audio against 4.8 for FFT Plot. That said, the two scores are not equally well evidenced: AudioTools, dB, Sound & Audio has 5.1K ratings behind it against 90, so its average is the more settled of the two. Written reviews are what separate them: 75% of AudioTools, dB, Sound & Audio's written reviews are positive against 84% of FFT Plot's.

AudioTools, dB, Sound & Audio ships an update fortnightly, FFT Plot every 17 months. The most recent releases landed on October 20, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | AudioTools, dB, Sound & Audio | FFT Plot |
| --- | --- | --- |
| Price | $19.99 | **$9.99** |
| Rating | [4.8 (5.1K ratings)](https://appshunter.io/ios/app/audiotools-db-sound-and-audio/id325307477/reviews) | **[4.8 (90 ratings)](https://appshunter.io/ios/app/fft-plot/id569468015/reviews)** |
| Number of ratings | **5.1K** | 90 |
| Positive reviews | 75.1% of reviews | **84.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 17 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#21** | — |
| Size | 96 MB | 7 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [ONYX Apps](https://appshunter.io/developer/356553882) |

## What reviewers say

### AudioTools, dB, Sound & Audio

[App page](https://appshunter.io/ios/app/audiotools-db-sound-and-audio/id325307477)

**Currently charting:** #21 Top Paid · Music, #185 Top Paid (US App Store)

This professional audio analysis app offers a comprehensive suite of tools for acoustic measurements, including SPL, RTA, and FFT. It calibrates device microphones for accurate results and allows for the addition of powerful optional modules for advanced analysis.

**Highlights:** SPL Meter with A/C weighting, Real Time Analyzer (RTA), Fast Fourier Transform (FFT) analysis, Speaker Polarity Test, Audio Oscilloscope, Signal Generator, Audio Recorder

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All-In Module Access | $9.99 | per month |
| VU Meter | $2.99 | one-time |
| Polarity Test Module | $3.99 | one-time |
| ETC Module | $5.99 | one-time |
| Speaker Distortion | $5.99 | one-time |
| SPL Pro Module | $7.99 | one-time |
| SPL Graph Module | $9.99 | one-time |
| SPL Traffic Light | $9.99 | one-time |
| SoundScope VR | $24.99 | one-time |
| LARSA | $29.99 | one-time |
| IR Module | $49.99 | one-time |

**What reviewers like**

- 👍 Useful audio tools
- 🚀 Regularly updated
- 💡 Industry-standard features
- 👍 Accurate measurements
- 👍 Great support

**What reviewers complain about**

- 🔒 Many features locked behind paywall
- 🐛 Buggy iOS port
- 🔒 Expensive in-app purchases
- 🐛 Inconsistent functionality
- 🐛 Microphone issues

**Reported bugs**

- Crashes on launch
- Inaccurate SPL and frequency measurements
- Compatibility issues with iOS updates

**Requested features**

- Add manual
- Improve file export and sharing
- Improve user interface
- Add support for external microphones


### 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


## Frequently asked questions

### Is AudioTools, dB, Sound & Audio free?

AudioTools, dB, Sound & Audio costs $19.99, and also offers in-app purchases.

### Is FFT Plot free?

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

### Which has better reviews, AudioTools, dB, Sound & Audio or FFT Plot?

FFT Plot is rated higher. AudioTools, dB, Sound & Audio averages 4.8 out of 5 from 5.1K ratings, while FFT Plot averages 4.8 from 90 ratings.

### Do AudioTools, dB, Sound & Audio or FFT Plot have ads?

Neither AudioTools, dB, Sound & Audio nor FFT Plot shows ads.

### Which is updated more often, AudioTools, dB, Sound & Audio or FFT Plot?

AudioTools, dB, Sound & Audio ships an update fortnightly, and FFT Plot every 17 months. Most recently, AudioTools, dB, Sound & Audio was updated on October 20, 2026 and FFT Plot on October 19, 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.*