# Ultimate Car Audio App vs EZY

The clearest difference is in-app purchases: EZY at none against Ultimate Car Audio App's 6. EZY also leads on iOS requirement (11.0 vs 15.0). Ultimate Car Audio App's advantage is update cadence (every 3 days vs every 4 months) and ratings volume (79 vs 9). On price, rating, ads and device support there is nothing between them.

Both are free to download. Ultimate Car Audio App sells 6 one-off in-app purchases. EZY asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.2 for Ultimate Car Audio App against 4.3 for EZY. That said, the two scores are not equally well evidenced: Ultimate Car Audio App has 79 ratings behind it against 9, so its average is the more settled of the two.

Ultimate Car Audio App ships an update every 3 days, EZY every 4 months. The most recent releases landed on September 13, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Ultimate Car Audio App | EZY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (79 ratings)](https://appshunter.io/ios/app/ultimate-car-audio-app/id1052058556/reviews) | **[4.3 (9 ratings)](https://appshunter.io/ios/app/ezy-dsp/id6502801326/reviews)** |
| Number of ratings | **79** | 9 |
| Positive reviews | 83.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 74 MB | 11 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Thomas VanSlambrouck](https://appshunter.io/developer/1051372112) | [EZY AUDIOPARTS LLC](https://appshunter.io/developer/1746846485) |

## What reviewers say

### Ultimate Car Audio App

[App page](https://appshunter.io/ios/app/ultimate-car-audio-app/id1052058556)

This comprehensive toolkit assists car audio enthusiasts and professionals in designing enclosures, wiring speakers, and finding local shops. It offers various calculators, databases, and learning resources to enhance audio system setup and tuning.

**Highlights:** Box enclosure design calculator, Speaker wiring impedance calculator, Subwoofer and amplifier databases, Car audio shop directory, Tone generators for tuning, Educational tutorials and FAQs

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bronze | $1.99 | one-time |
| UCAA Pro Legacy | $2.99 | one-time |
| UCAA Pro | $4.99 | one-time |
| Silver | $4.99 | one-time |
| Gold | $9.99 | one-time |
| Diamond | $19.99 | one-time |

**What reviewers like**

- 👍 Great for DIY car audio
- 👍 Excellent for beginners and pros
- 👍 Must-have for bass heads
- 👍 Best box building app
- 👍 Accurate box calculations

**What reviewers complain about**

- 👎 Ads on purchased app
- 👎 Limited sub brands in database
- 👎 Cut sheet lacks port wall info for slot ports
- 👎 3D box feature is pointless
- 👎 Electrical calculations inaccurate

**Reported bugs**

- Ads appearing after purchase
- No sound for tone burst or sweep
- App stopped working
- Cutout sheet not available
- No preview for box design

**Requested features**

- Remove ads from purchased app
- Add more sub brands to the database
- Include port wall info on cut sheets for slot ports
- Improve 3D box feature
- Fix inaccurate electrical calculations


### EZY

[App page](https://appshunter.io/ios/app/ezy-dsp/id6502801326)

Refine your car audio system with advanced DSP technology for unparalleled clarity and depth. This app offers sophisticated tools to meticulously adjust every aspect of your sound, compensating for vehicle interior distortions to achieve audio perfection.

**Highlights:** Ezy DSP technology, Sophisticated audio refinement tools, Compensates for vehicle interior distortions, Achieve audio perfection, Unparalleled clarity and depth

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ultimate Car Audio App free?

Ultimate Car Audio App is free to download, with in-app purchases available.

### Is EZY free?

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

### Which has better reviews, Ultimate Car Audio App or EZY?

EZY is rated higher. Ultimate Car Audio App averages 4.2 out of 5 from 79 ratings, while EZY averages 4.3 from 9 ratings.

### Do Ultimate Car Audio App or EZY have ads?

Neither Ultimate Car Audio App nor EZY shows ads.

### Which is updated more often, Ultimate Car Audio App or EZY?

Ultimate Car Audio App ships an update every 3 days, and EZY every 4 months. Most recently, Ultimate Car Audio App was updated on September 13, 2026 and EZY on August 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*