# DD Toolbox vs SixTen DSP Bluetooth Control

The clearest difference is review sentiment: DD Toolbox at 63% against SixTen DSP Bluetooth Control's 11%. DD Toolbox also leads on rating (3.6 vs 2.4) and update cadence (monthly vs every 9 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

DD Toolbox holds the better App Store score, 3.6 against 2.4. Both are backed by a comparable volume of ratings — 12 and 16 respectively. Written reviews point the same way: 63% of DD Toolbox's written reviews are positive against 11% of SixTen DSP Bluetooth Control's.

DD Toolbox ships an update monthly, SixTen DSP Bluetooth Control every 9 months. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | DD Toolbox | SixTen DSP Bluetooth Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (12 ratings)](https://appshunter.io/ios/app/dd-toolbox/id599474303/reviews)** | [2.4 (16 ratings)](https://appshunter.io/ios/app/sixten-dsp-bluetooth-control/id6743507284/reviews) |
| Number of ratings | 12 | **16** |
| Positive reviews | **62.5% of reviews** | 11.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 9 months |
| Monetization | Free | Free |
| Size | 13 MB | 63 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DD Audio](https://appshunter.io/developer/599474306) | [B2 AUDIO](https://appshunter.io/developer/1803253771) |

## What reviewers say

### DD Toolbox

[App page](https://appshunter.io/ios/app/dd-toolbox/id599474303)

This app provides essential tools for car audio installers to set up and analyze high-performance systems. It offers a power calculator, tone generator, and DD box calculator, designed for quick and convenient use during installations.

**Highlights:** Power Calculator, Tone Generator, DD Box Calculator, Dynamic configuration data download, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


### SixTen DSP Bluetooth Control

[App page](https://appshunter.io/ios/app/sixten-dsp-bluetooth-control/id6743507284)

Fine-tune your car audio system with advanced sound customization via Bluetooth. Adjust crossovers, EQ, gain, and more for a perfect listening experience.

**Highlights:** Precision Crossover Adjustments, 31-Band Parametric EQ, Gain Control, Limiters & Delays, Polarity & Phase Control, Independent Left/Right Routing, Real-Time Monitoring, Save & Recall Presets

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DD Toolbox free?

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

### Is SixTen DSP Bluetooth Control free?

SixTen DSP Bluetooth Control is free to download, with no in-app purchases.

### Which has better reviews, DD Toolbox or SixTen DSP Bluetooth Control?

DD Toolbox is rated higher. DD Toolbox averages 3.6 out of 5 from 12 ratings, while SixTen DSP Bluetooth Control averages 2.4 from 16 ratings.

### Do DD Toolbox or SixTen DSP Bluetooth Control have ads?

Neither DD Toolbox nor SixTen DSP Bluetooth Control shows ads.

### Which is updated more often, DD Toolbox or SixTen DSP Bluetooth Control?

DD Toolbox ships an update monthly, and SixTen DSP Bluetooth Control every 9 months. Most recently, DD Toolbox was updated on September 24, 2026 and SixTen DSP Bluetooth Control on October 4, 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.*