# JB4 Mobile vs EK1 Tuning cloud

The clearest difference is price: EK1 Tuning cloud at Free against JB4 Mobile's $27.99. EK1 Tuning cloud also leads on update cadence (every 2 weeks vs every 3 months). JB4 Mobile's advantage is rating (3.8 vs 1.3) and ratings volume (239 vs 3). On ads, in-app purchases, monetization model and device support there is nothing between them.

EK1 Tuning cloud 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 Mobile holds the better App Store score, 3.8 against 1.3. That said, the two scores are not equally well evidenced: JB4 Mobile has 239 ratings behind it against 3, so its average is the more settled of the two.

JB4 Mobile ships an update every 3 months, EK1 Tuning cloud every 2 weeks. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | JB4 Mobile | EK1 Tuning cloud |
| --- | --- | --- |
| Price | $27.99 | **Free** |
| Rating | **[3.8 (239 ratings)](https://appshunter.io/ios/app/jb4-mobile/id794841332/reviews)** | [1.3 (3 ratings)](https://appshunter.io/ios/app/ek1-tuning-cloud/id6686403255/reviews) |
| Number of ratings | **239** | 3 |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#6** | — |
| Size | 24 MB | 67 MB |
| Requires iOS | 15.1 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [NAMKUK SEONG](https://appshunter.io/developer/1768599883) |

## What reviewers say

### JB4 Mobile

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

**Currently charting:** #6 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


### EK1 Tuning cloud

[App page](https://appshunter.io/ios/app/ek1-tuning-cloud/id6686403255)

Manage and install tuning maps for EK1 devices via a cloud service. Create and share data logs easily with your EK1Pro or EK1Mini2.

**Highlights:** Cloud management of tuning files, Create data logs with EK1 device, Easy tuning map installation, Simple log creation and sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JB4 Mobile free?

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

### Is EK1 Tuning cloud free?

EK1 Tuning cloud is free to download, with no in-app purchases.

### Which has better reviews, JB4 Mobile or EK1 Tuning cloud?

JB4 Mobile is rated higher. JB4 Mobile averages 3.8 out of 5 from 239 ratings, while EK1 Tuning cloud averages 1.3 from 3 ratings.

### Do JB4 Mobile or EK1 Tuning cloud have ads?

Neither JB4 Mobile nor EK1 Tuning cloud shows ads.

### Which is updated more often, JB4 Mobile or EK1 Tuning cloud?

JB4 Mobile ships an update every 3 months, and EK1 Tuning cloud every 2 weeks. Most recently, JB4 Mobile was updated on September 23, 2026 and EK1 Tuning cloud on September 18, 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.*