Comp 2.0 vs Arbornotes
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.
Arbornotes
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Arbor, the latin word for tree, was the primary inspiration for this app. A way to organize any amount of files in an order customized to the user. Every feature in this app I have implemented with hours of thought and polishing. I made this app because I felt that nothing already made offered what I and other people needed. This app isn't just designed for students, it is designed for everyone. Its designed with a sleek, professional and minimal look. If it's a project with multiple versions and ideas, a class with all of its lectures, or a hobbyist wanting to organize things better. Give it a try, all support and future ideas are welcome. Welcome to a new way to take notes. The app is optimized for iPad, but I've adapted some features for iPhone.
Screenshots
Verdict
The clearest difference is update cadence: Arbornotes at every 3 months against Comp 2.0's every 11 months. Comp 2.0's advantage is iOS requirement (15.0 vs 18.2). On price, ads, in-app purchases and device support 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.
Comp 2.0 ships an update every 11 months, Arbornotes every 3 months. Both last shipped on September 23, 2026.
| Parameter | Comp 2.0 | Arbornotes |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 11 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 139 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Holley Performance Products | Laurent Poirier |
In-app purchases
Comp 2.0
No in-app purchases
Arbornotes
No in-app purchases









