# JACK 103.1 vs GhostChaser GT

The clearest difference is in-app purchases: JACK 103.1 at none against GhostChaser GT's 1. GhostChaser GT's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. GhostChaser GT sells 1 in-app purchase, starting at $3.99 per month. JACK 103.1 asks for nothing beyond the download.

## The numbers

| Metric | JACK 103.1 | GhostChaser GT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ghostchaser-gt/id6760840139/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 16 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 8 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KTTR-KZNN INC](https://appshunter.io/developer/1440847764) | [ANDREW R MCCONNELL](https://appshunter.io/developer/1886483806) |

## What reviewers say

### JACK 103.1

[App page](https://appshunter.io/ios/app/jack-1031/id1440849061)

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

**In-app purchases:** none


### GhostChaser GT

[App page](https://appshunter.io/ios/app/ghostchaser-gt/id6760840139)

This app provides real-time driving feedback for Gran Turismo 7 on PS5. It analyzes your inputs against a reference lap and uses audio cues through your phone to guide you on where to improve your lap times. No extra hardware is required, just your console and a mobile device.

**Highlights:** Live brake audio coaching, Oscilloscope traces for inputs, Per-corner speed and gear stats, Weekly reference laps for daily races, Universal iPhone and iPad app

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GhostChaser Monthly | $3.99 | per month |


## Frequently asked questions

### Is JACK 103.1 free?

JACK 103.1 is free to download, with no in-app purchases.

### Is GhostChaser GT free?

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

### Do JACK 103.1 or GhostChaser GT have ads?

JACK 103.1 shows ads; GhostChaser GT does not.

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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.*