# Tune Delivery Network (TDN) vs Comp 2.0

The clearest difference is rating: Comp 2.0 at 3.8 against Tune Delivery Network (TDN)'s 2.5. Tune Delivery Network (TDN)'s advantage is update cadence (fortnightly vs every 11 months) and ratings volume (37 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.

Comp 2.0 holds the better App Store score, 3.8 against 2.5. That said, the two scores are not equally well evidenced: Tune Delivery Network (TDN) has 37 ratings behind it against 6, so its average is the more settled of the two.

Tune Delivery Network (TDN) ships an update fortnightly, Comp 2.0 every 11 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Tune Delivery Network (TDN) | Comp 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (37 ratings)](https://appshunter.io/ios/app/tune-delivery-network-tdn/id1590560864/reviews) | **[3.8 (6 ratings)](https://appshunter.io/ios/app/comp-20/id6450721506/reviews)** |
| Number of ratings | **37** | 6 |
| Positive reviews | 14.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 11 months |
| Monetization | Free | Free |
| Size | 61 MB | 139 MB |
| Requires iOS | **13.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HP Tuners LLC](https://appshunter.io/developer/1767627066) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### Tune Delivery Network (TDN)

[App page](https://appshunter.io/ios/app/tune-delivery-network-tdn/id1590560864)

This application allows users to receive custom vehicle tunes from their tuner via a compatible TDN delivery device. It facilitates the transfer of performance tuning files directly to your vehicle's tuner. A specific TDN-compatible hardware device is necessary to use this service.

**Highlights:** Receive custom vehicle tunes, Works with TDN devices, Direct tune delivery, Requires compatible hardware

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Flashing tunes fast and easy
- 🚀 Convenient for tuning without a Windows PC
- 👍 Great for remote tuning and diagnostics
- 👍 Works well when tuner sends file

**What reviewers complain about**

- 🐛 Constant connectivity issues
- 🐛 Crashes and freezes frequently
- 🐛 Glitchy and inconsistent performance
- 🐛 Bluetooth disconnection problems
- 🐛 Sync and file transfer issues

**Reported bugs**

- App crashes when trying to read/clear codes or connect to device
- Fails to load tunes or read vehicle data
- Bluetooth connectivity issues prevent basic functions
- Sync and file transfer problems

**Requested features**

- Allow uploading tunes from tuner for personal use
- Add basic tuning functions like KAM reset and crank relearn
- Improve data log viewing and management capabilities


### 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 Tune Delivery Network (TDN) free?

Tune Delivery Network (TDN) 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, Tune Delivery Network (TDN) or Comp 2.0?

Comp 2.0 is rated higher. Tune Delivery Network (TDN) averages 2.5 out of 5 from 37 ratings, while Comp 2.0 averages 3.8 from 6 ratings.

### Do Tune Delivery Network (TDN) or Comp 2.0 have ads?

Neither Tune Delivery Network (TDN) nor Comp 2.0 shows ads.

### Which is updated more often, Tune Delivery Network (TDN) or Comp 2.0?

Tune Delivery Network (TDN) ships an update fortnightly, and Comp 2.0 every 11 months. Most recently, Tune Delivery Network (TDN) was updated on November 3, 2026 and Comp 2.0 on November 3, 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.*