Comp 2.0 vs FassConnect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Comp 2.0
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.
- 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
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The COMP box has dominated the 1998.5-2002 24V Cummins market for two decades and put Edge Products on the map in the early diesel performance era. With so many VP44 trucks still on the road, we’ve revamped our COMP to offer dominating performance gains with the industry’s latest technology. Our all-new Bluetooth wireless switch offers on-the-fly adjustability giving complete control over the driving experience. The mobile App offers fine tuning adjustment for low boost fueling, fuel delivery based on Accelerator Pedal Position, and timing to dial in your power curve for aftermarket injectors and larger turbo combinations. Breathing new life into your 5.9L Cummins, COMP offers gains from 40-150 HP, 150-380 TQ, even more RPM, and power available for heavily modified applications.
FassConnect
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.
- Live vehicle vitals readouts
- Diesel filter health tracking
- Filter change reminders
- Simple dashboard interface
- Dark mode support
- Bluetooth connectivity
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FassConnect gives you a clear view of your vehicle’s vitals and diesel filter status right from your phone. Highlights: - Live readouts: fuel pressure, temps, battery, more - Filter health tracking with change reminders - Simple, easy to use dashboard with dark mode. - Works with compatible sensors/adapters. - Connects to the FassConnect-ECU via Bluetooth.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Comp 2.0 | FassConnect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (6 ratings) | 4.7 (12 ratings) — better |
| Number of ratings | 6 | 12 — better |
| Update frequency | Every 11 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 139 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Holley Performance Products | Interactive Technologies, Inc. (KS) |
In-app purchases
Comp 2.0
No in-app purchases
FassConnect
No in-app purchases
