# Comp 2.0 vs FassConnect

The clearest difference is rating: FassConnect at 4.7 against Comp 2.0's 3.8. FassConnect also leads on update cadence (every 3 months vs every 11 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.

FassConnect holds the better App Store score, 4.7 against 3.8. Both are backed by a comparable volume of ratings — 6 and 12 respectively.

Comp 2.0 ships an update every 11 months, FassConnect every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Comp 2.0 | FassConnect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/comp-20/id6450721506/reviews) | **[4.7 (12 ratings)](https://appshunter.io/ios/app/fassconnect/id6741928349/reviews)** |
| Number of ratings | 6 | **12** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 139 MB | 8 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Holley Performance Products](https://appshunter.io/developer/1175069390) | [Interactive Technologies, Inc. (KS)](https://appshunter.io/developer/505481415) |

## 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


### FassConnect

[App page](https://appshunter.io/ios/app/fassconnect/id6741928349)

Monitor your vehicle's diesel filter status and vital readings directly from your smartphone. Receive timely reminders for filter changes and view key metrics on a user-friendly dashboard. Requires compatible sensors and Bluetooth connection.

**Highlights:** Live vehicle vitals readouts, Diesel filter health tracking, Filter change reminders, Simple dashboard interface, Dark mode support, Bluetooth connectivity

**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 FassConnect free?

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

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

FassConnect is rated higher. Comp 2.0 averages 3.8 out of 5 from 6 ratings, while FassConnect averages 4.7 from 12 ratings.

### Do Comp 2.0 or FassConnect have ads?

Neither Comp 2.0 nor FassConnect shows ads.

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

Comp 2.0 ships an update every 11 months, and FassConnect every 3 months. Most recently, Comp 2.0 was updated on October 30, 2026 and FassConnect on October 24, 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.*