# AudioTools, dB, Sound & Audio vs Audio Function Generator PRO

The clearest difference is price: Audio Function Generator PRO at $9.99 against AudioTools, dB, Sound & Audio's $19.99. Audio Function Generator PRO also leads on in-app purchases (none vs 11) and review sentiment (88% vs 75%). AudioTools, dB, Sound & Audio's advantage is ratings volume (5.1K vs 270) and update cadence (fortnightly vs every 6 weeks). On rating, ads, device support and iOS requirement there is nothing between them.

AudioTools, dB, Sound & Audio costs $19.99 and Audio Function Generator PRO $9.99 up front. AudioTools, dB, Sound & Audio sells 11 in-app purchases, starting at $9.99 per month. Audio Function Generator PRO 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 Audio Function Generator PRO. That said, the two scores are not equally well evidenced: AudioTools, dB, Sound & Audio has 5.1K ratings behind it against 270, 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 88% of Audio Function Generator PRO's.

AudioTools, dB, Sound & Audio ships an update fortnightly, Audio Function Generator PRO every 6 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | AudioTools, dB, Sound & Audio | Audio Function Generator PRO |
| --- | --- | --- |
| 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 (270 ratings)](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703/reviews) |
| Number of ratings | **5.1K** | 270 |
| Positive reviews | 75.1% of reviews | **87.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#16** | #92 |
| Size | 95 MB | 13 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Thomas Gruber](https://appshunter.io/developer/342699861) |

## What reviewers say

### AudioTools, dB, Sound & Audio

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

**Currently charting:** #16 Top Paid · Music, #140 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


### Audio Function Generator PRO

[App page](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703)

**Currently charting:** #92 Top Paid · Music (US App Store)

Generate various audio test tones, including sine, square, and sawtooth waves. Explore frequency and volume sweeps, custom presets, and different types of noise. Advanced settings allow for fine-tuning signal parameters and creating complex multi-tone sequences.

**Highlights:** Generate sine, square, triangular, and sawtooth tones, Frequency and volume sweep generation, Customizable presets and configurations, Multiple noise types (White, Pink, Violet, etc.), Advanced signal parameter control, Multi-tone and dual function generation

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

**In-app purchases:** none

**What reviewers like**

- ✨ Superb craftsmanship and work
- 🚀 Excellent performance on older devices
- 💡 History feature is a great addition
- 👍 Versatile and powerful app
- 🎶 Great for binaural beats and sound creation

**What reviewers complain about**

- 📉 Linear sweep is useless
- ❓ Missing PWM functionality
- ❓ Missing Terzrauschen (third-octave noise)
- 🐛 Volume button issues
- 🐛 GUI is bad

**Reported bugs**

- Volume button issues (jumps up and down, displays wrong level)
- Update crashes on iPad Air2 when changing screens
- App opens AppStore repeatedly after purchase
- Buttons don't respond, settings don't keep
- Frequencies stick, program is useless

**Requested features**

- Logarithmic sweeps and frequency slider scale
- PWM functionality
- Terzrauschen (third-octave noise)
- Ping-pong sweeps in Multitone windows
- Sweeping of noise/adding noise in Multitone sweep with sweeping bandpass filter


## Frequently asked questions

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

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

### Is Audio Function Generator PRO free?

Audio Function Generator PRO costs $9.99, with no in-app purchases.

### Which has better reviews, AudioTools, dB, Sound & Audio or Audio Function Generator PRO?

AudioTools, dB, Sound & Audio and Audio Function Generator PRO are both rated 4.8 out of 5 on the App Store, from 5.1K and 270 ratings respectively.

### Do AudioTools, dB, Sound & Audio or Audio Function Generator PRO have ads?

Neither AudioTools, dB, Sound & Audio nor Audio Function Generator PRO shows ads.

### Which is updated more often, AudioTools, dB, Sound & Audio or Audio Function Generator PRO?

AudioTools, dB, Sound & Audio ships an update fortnightly, and Audio Function Generator PRO every 6 weeks. Most recently, AudioTools, dB, Sound & Audio was updated on October 15, 2026 and Audio Function Generator PRO on October 17, 2026.

### Which is more popular, AudioTools, dB, Sound & Audio or Audio Function Generator PRO?

AudioTools, dB, Sound & Audio currently peaks at #16 in the App Store charts, and Audio Function Generator PRO at #92. Chart position reflects recent download velocity rather than total install base.

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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.*