# aRacer X Tune vs TST LED

The clearest difference is update cadence: aRacer X Tune at fortnightly against TST LED's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

aRacer X Tune ships an update fortnightly, TST LED every 6 months. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | aRacer X Tune | TST LED |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (17 ratings)](https://appshunter.io/ios/app/aracer-x-tune/id1589890610/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 19.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | Free | — |
| Size | 120 MB | 101 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [ARACER SPEEDTEK INC.](https://appshunter.io/developer/1218691866) | [Foshan Lingchuang Future Information Technology Co., Ltd.](https://appshunter.io/developer/1836095920) |

## What reviewers say

### aRacer X Tune

[App page](https://appshunter.io/ios/app/aracer-x-tune/id1589890610)

This app allows for advanced engine tuning and analysis for specific ECU series. It offers features like fuel and ignition timing adjustments, automatic correction, and traction control. Paid upgrades unlock more powerful functions for a customized experience.

**Highlights:** Fuel and ignition timing adjustment, Automatic adjustment functions, Traction control system (TCS), Power response adjustment, Guided idle speed setting, Backfire/Idle lope control, New analysis tools

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

**In-app purchases:** none


### TST LED

[App page](https://appshunter.io/ios/app/tst-led/id6751237442)

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

**In-app purchases:** none


## Frequently asked questions

### Is aRacer X Tune free?

aRacer X Tune is free to download, with no in-app purchases.

### Is TST LED free?

TST LED is free to download, with no in-app purchases.

### Do aRacer X Tune or TST LED have ads?

Neither aRacer X Tune nor TST LED shows ads.

### Which is updated more often, aRacer X Tune or TST LED?

aRacer X Tune ships an update fortnightly, and TST LED every 6 months. Most recently, aRacer X Tune was updated on October 21, 2026 and TST LED 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.*