# JB4 Mobile vs JB4 PRO

The clearest difference is price: JB4 PRO at Free against JB4 Mobile's $27.99. JB4 PRO also leads on rating (4.4 vs 3.8) and update cadence (fortnightly vs every 3 months). JB4 Mobile's advantage is ratings volume (239 vs 14) and chart position (#4 vs unranked). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

JB4 PRO is free to download; JB4 Mobile costs $27.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JB4 PRO holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: JB4 Mobile has 239 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 52% of JB4 Mobile's written reviews are positive against 50% of JB4 PRO's, so the app with the better star average is not the one people write more warmly about.

JB4 Mobile ships an update every 3 months, JB4 PRO fortnightly. The most recent releases landed on September 23, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | JB4 Mobile | JB4 PRO |
| --- | --- | --- |
| Price | $27.99 | **Free** |
| Rating | [3.8 (239 ratings)](https://appshunter.io/ios/app/jb4-mobile/id794841332/reviews) | **[4.4 (14 ratings)](https://appshunter.io/ios/app/jb4-pro/id6746129072/reviews)** |
| Number of ratings | **239** | 14 |
| Positive reviews | **52.4% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | Free |
| Best chart rank | **#4** | — |
| Size | 24 MB | 22 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [Burger Motorsports, Inc](https://appshunter.io/developer/1815297026) |

## What reviewers say

### JB4 Mobile

[App page](https://appshunter.io/ios/app/jb4-mobile/id794841332)

**Currently charting:** #4 Top Paid · Sports (US App Store)

This app acts as a mobile data logger and display for vehicles equipped with a JB4 tuner. It allows users to monitor and log various engine parameters, view data in real-time, and adjust settings for performance tuning.

**Highlights:** Live gauge monitoring, Data logging and graphing, User adjustable settings, WMI settings modification, On-the-fly map switching, Code reading and deletion

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app and a must have with the JB4
- 🔒 Robust security features
- 👍 Awesome data logging
- 👍 Incredible Support
- 👍 Works as expected

**What reviewers complain about**

- 🐛 Doesn't work properly, screen upside down and backwards
- 🐛 Stopped working after update
- 🐛 Bluetooth connection issues
- 🐛 Gauges freezing
- 🐛 Screen turns off

**Reported bugs**

- App crashes
- Can't connect to server
- Mirrored/inverted display
- Compatibility issues with new iOS versions
- Trouble logging in

**Requested features**

- Add CarPlay support
- Allow customizing map names
- Add more gauge styling options
- Improve UI and layout
- Integrate with Apple Carplay


### JB4 PRO

[App page](https://appshunter.io/ios/app/jb4-pro/id6746129072)

Integrate your performance tuner with your smartphone to adjust engine maps, view real-time data, and manage system settings. This app requires a specific Bluetooth adapter for full functionality.

**Highlights:** Change maps, Monitor live engine data, Record logs, Manage fault codes, Update JB4 firmware, Smartphone integration

**In-app purchases:** none


## Frequently asked questions

### Is JB4 Mobile free?

JB4 Mobile costs $27.99, with no in-app purchases.

### Is JB4 PRO free?

JB4 PRO is free to download, with no in-app purchases.

### Which has better reviews, JB4 Mobile or JB4 PRO?

JB4 PRO is rated higher. JB4 Mobile averages 3.8 out of 5 from 239 ratings, while JB4 PRO averages 4.4 from 14 ratings.

### Do JB4 Mobile or JB4 PRO have ads?

Neither JB4 Mobile nor JB4 PRO shows ads.

### Which is updated more often, JB4 Mobile or JB4 PRO?

JB4 Mobile ships an update every 3 months, and JB4 PRO fortnightly. Most recently, JB4 Mobile was updated on September 23, 2026 and JB4 PRO on September 13, 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.*