# Tune Delivery Network (TDN) vs Flash Tree

The clearest difference is review sentiment: Flash Tree at 100% against Tune Delivery Network (TDN)'s 14%. Flash Tree also leads on rating (4.0 vs 2.5) and iOS requirement (11.0 vs 13.1). Tune Delivery Network (TDN)'s advantage is in-app purchases (none vs 1) and ratings volume (26 vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flash Tree sells 1 in-app purchase, starting at $9.99 per month. Tune Delivery Network (TDN) asks for nothing beyond the download.

Flash Tree holds the better App Store score, 4.0 against 2.5. That said, the two scores are not equally well evidenced: Tune Delivery Network (TDN) has 26 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 14% of Tune Delivery Network (TDN)'s written reviews are positive against 100% of Flash Tree's.

Tune Delivery Network (TDN) ships an update fortnightly, Flash Tree every 10 days. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Tune Delivery Network (TDN) | Flash Tree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (26 ratings)](https://appshunter.io/ios/app/tune-delivery-network-tdn/id1590560864/reviews) | **[4.0 (4 ratings)](https://appshunter.io/ios/app/flash-tree/id1591487632/reviews)** |
| Number of ratings | **26** | 4 |
| Positive reviews | 14.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 61 MB | 30 MB |
| Requires iOS | 13.1 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HP Tuners LLC](https://appshunter.io/developer/1767627066) | [BUILDMYPAGE, LLC](https://appshunter.io/developer/1550205663) |

## 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


### Flash Tree

[App page](https://appshunter.io/ios/app/flash-tree/id1591487632)

Synchronize countdown timers across multiple devices for group races or events. Start races instantly without needing external assistance. Ideal for competitive activities where precise timing is crucial.

**Highlights:** Synced countdown timers, Group race functionality, Start races instantly, Multi-device synchronization, Customizable countdowns

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flash Tree Subscription | $9.99 | per month |


## Frequently asked questions

### Is Tune Delivery Network (TDN) free?

Tune Delivery Network (TDN) is free to download, with no in-app purchases.

### Is Flash Tree free?

Flash Tree is free to download, with in-app purchases available.

### Which has better reviews, Tune Delivery Network (TDN) or Flash Tree?

Flash Tree is rated higher. Tune Delivery Network (TDN) averages 2.5 out of 5 from 26 ratings, while Flash Tree averages 4.0 from 4 ratings.

### Do Tune Delivery Network (TDN) or Flash Tree have ads?

Neither Tune Delivery Network (TDN) nor Flash Tree shows ads.

### Which is updated more often, Tune Delivery Network (TDN) or Flash Tree?

Tune Delivery Network (TDN) ships an update fortnightly, and Flash Tree every 10 days. Most recently, Tune Delivery Network (TDN) was updated on October 18, 2026 and Flash Tree on October 12, 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.*