# Tune Delivery Network (TDN) vs SpireMonitor

The clearest difference is in-app purchases: Tune Delivery Network (TDN) at none against SpireMonitor's 2. Tune Delivery Network (TDN) also leads on iOS requirement (13.1 vs 17.0). SpireMonitor's advantage is update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. SpireMonitor sells 2 in-app purchases, starting at $4.99 per month. Tune Delivery Network (TDN) asks for nothing beyond the download.

Tune Delivery Network (TDN) ships an update fortnightly, SpireMonitor every 2 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tune Delivery Network (TDN) | SpireMonitor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (37 ratings)](https://appshunter.io/ios/app/tune-delivery-network-tdn/id1590560864/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 14.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free | — |
| Size | 61 MB | 7 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HP Tuners LLC](https://appshunter.io/developer/1767627066) | [Riyad Anabtawi](https://appshunter.io/developer/1537641230) |

## 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


### SpireMonitor

[App page](https://appshunter.io/ios/app/spiremonitor/id6760571994)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spire Pro Monthly | $4.99 | per month |
| Spire Pro Yearly | $39.99 | per year |


## Frequently asked questions

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

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

### Is SpireMonitor free?

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

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

Neither Tune Delivery Network (TDN) nor SpireMonitor shows ads.

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

Tune Delivery Network (TDN) ships an update fortnightly, and SpireMonitor every 2 days. Most recently, Tune Delivery Network (TDN) was updated on October 30, 2026 and SpireMonitor on October 25, 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.*