# iQuad by Quadzilla vs Comp 2.0

The clearest difference is update cadence: iQuad by Quadzilla at every 4 months against Comp 2.0's every 11 months. iQuad by Quadzilla also leads on rating (4.0 vs 3.8) and ratings volume (40 vs 6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

iQuad by Quadzilla holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: iQuad by Quadzilla has 40 ratings behind it against 6, so its average is the more settled of the two.

iQuad by Quadzilla ships an update every 4 months, Comp 2.0 every 11 months. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | iQuad by Quadzilla | Comp 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (40 ratings)](https://appshunter.io/ios/app/iquad-by-quadzilla/id404644624/reviews)** | [3.8 (6 ratings)](https://appshunter.io/ios/app/comp-20/id6450721506/reviews) |
| Number of ratings | **40** | 6 |
| Positive reviews | 48.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 69 MB | 139 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Quadzilla Power, LLC](https://appshunter.io/developer/1018307322) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### iQuad by Quadzilla

[App page](https://appshunter.io/ios/app/iquad-by-quadzilla/id404644624)

This app provides wireless control and on-the-fly adjustments for specific performance modules. Monitor numerous engine parameters, customize gauge displays, and set safety limits. It offers advanced tuning capabilities and works with all compatible modules regardless of vehicle make or model.

**Highlights:** Wireless control, On-the-fly power changes, Up to 40+ monitored parameters, Customizable gauge displays, Turbo timer control, Data logging, Safety settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Comp 2.0

[App page](https://appshunter.io/ios/app/comp-20/id6450721506)

Enhance your 1998.5-2002 24V Cummins diesel engine's performance with on-the-fly adjustments. Fine-tune fueling, accelerator pedal response, and timing for significant power gains.

**Highlights:** On-the-fly adjustability via Bluetooth, Fine-tune low boost fueling, Adjust fuel delivery based on pedal position, Optimize timing for power curves, Gains of 40-150 HP and 150-380 TQ, Supports aftermarket injectors and turbos

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iQuad by Quadzilla free?

iQuad by Quadzilla is free to download, with no in-app purchases.

### Is Comp 2.0 free?

Comp 2.0 is free to download, with no in-app purchases.

### Which has better reviews, iQuad by Quadzilla or Comp 2.0?

iQuad by Quadzilla is rated higher. iQuad by Quadzilla averages 4.0 out of 5 from 40 ratings, while Comp 2.0 averages 3.8 from 6 ratings.

### Do iQuad by Quadzilla or Comp 2.0 have ads?

Neither iQuad by Quadzilla nor Comp 2.0 shows ads.

### Which is updated more often, iQuad by Quadzilla or Comp 2.0?

iQuad by Quadzilla ships an update every 4 months, and Comp 2.0 every 11 months. Most recently, iQuad by Quadzilla was updated on October 16, 2026 and Comp 2.0 on October 12, 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.*