# Comp 2.0 vs GACRacing

The clearest difference is rating: GACRacing at 5.0 against Comp 2.0's 3.8. GACRacing also leads on update cadence (every 2 months vs every 11 months) and iOS requirement (13.0 vs 15.0). Comp 2.0's advantage is ratings volume (6 vs 2). 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.

GACRacing holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Comp 2.0 ships an update every 11 months, GACRacing every 2 months. The most recent releases landed on September 11, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | Comp 2.0 | GACRacing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/comp-20/id6450721506/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gacracing/id6474413731/reviews)** |
| Number of ratings | **6** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 139 MB | 23 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Holley Performance Products](https://appshunter.io/developer/1175069390) | [琪 赵](https://appshunter.io/developer/1719818426) |

## What reviewers say

### 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


### GACRacing

[App page](https://appshunter.io/ios/app/gacracing/id6474413731)

This application is an Electronic Speed Controller (ESC) designed for crawler cars. It offers exceptional low-speed control and broad compatibility with sensorless brushless motors. Users can switch between crawler and normal operating modes via PWM channels.

**Highlights:** Super smooth low-speed control, Compatible with 99% of sensorless brushless motors, Two operating modes: crawler and normal, Mode switching via PWM channels, Designed for crawler cars

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Comp 2.0 free?

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

### Is GACRacing free?

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

### Which has better reviews, Comp 2.0 or GACRacing?

GACRacing is rated higher. Comp 2.0 averages 3.8 out of 5 from 6 ratings, while GACRacing averages 5.0 from 2 ratings.

### Do Comp 2.0 or GACRacing have ads?

Neither Comp 2.0 nor GACRacing shows ads.

### Which is updated more often, Comp 2.0 or GACRacing?

Comp 2.0 ships an update every 11 months, and GACRacing every 2 months. Most recently, Comp 2.0 was updated on September 11, 2026 and GACRacing on July 6, 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.*