JB4 Mobile vs Garmin Catalyst™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JB4 Mobile
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.
- Live gauge monitoring
- Data logging and graphing
- User adjustable settings
- WMI settings modification
- On-the-fly map switching
- Code reading and deletion
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The brand new JB4 Mobile application is finally ready for public release and has lots of great new features including: *Gauge theme customizations *Built-in raw CSV data viewer *Revamped User Adj./WMI data editors *New modern UI completely rewritten from the ground up *More seamless integration with our backend servers JB4 Connect Kit Users: 1) Install the Connect Kit per the installation guide for your vehicle 2) Create your account/sign in with this app 3) Ensure JB4 Mobile has all requested permissions 4) Tap the Connect button in JB4 Mobile About The App: JB4 Mobile is a mobile data logger and display for use with the JB4 tuner from Burger Motorsports. JB4 Mobile allows you to monitor and log multiple parameters from your JB4 equipped car. Parameters such as boost, rpm, fuel trims, air/fuel ratios, ignition advance and much more are available. Current Features: Live gauges Data logging Data graphing Log export via email Code reading/deletion Modify User Adj. (boost, fuel, etc.) settings Modify WMI settings Switch maps on the fly Auto WOT logging JB4 Firmware Updating JB4 ® is a registered trademark of Burger Motorsports Inc ® and is used with written permission.
Garmin Catalyst™
Access and analyze your motorsports performance data on your smartphone. Review lap times, session summaries, and driver profiles. Track annual driving activity and session weather conditions.
- Access performance data
- View lap times
- Session summaries
- Customizable driver profiles
- Track annual activity
- Record weather conditions
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For motorsports drivers of all levels, the Garmin Catalyst™ app provides a simple, intuitive way to access your Garmin Catalyst™ performance data — including lap times, session summaries and customizable driver profiles— on your compatible smartphone or tablet. The app also tracks your annual driving activity metrics and provides a record of weather conditions for each session. Garmin Catalyst™ App • Easily access your Garmin Catalyst™ performance data with use of this app on your compatible smartphone or tablet • Shows your session summaries, lap times, session weather conditions, lap-by-lap data and annual driving activity metrics • Customizable icons within the app let you tailor the look of your driver profile and vehicle icons • View vehicles and track notes from your Garmin Catalyst™ device
Screenshots
Verdict
The clearest difference is price: Garmin Catalyst™ at Free against JB4 Mobile's $27.99. Garmin Catalyst™ also leads on rating (4.8 vs 3.8) and review sentiment (80% vs 52%). JB4 Mobile's advantage is chart position (#4 vs unranked). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Garmin Catalyst™ is free to download; JB4 Mobile costs $27.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Garmin Catalyst™ holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 239 and 120 respectively. Written reviews point the same way: 52% of JB4 Mobile's written reviews are positive against 80% of Garmin Catalyst™'s.
JB4 Mobile ships an update every 3 months, Garmin Catalyst™ monthly. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.
| Parameter | JB4 Mobile | Garmin Catalyst™ |
|---|---|---|
| Price | $27.99 | Free — better |
| Rating | 3.8 (239 ratings) | 4.8 (120 ratings) — better |
| Positive reviews | 52.4% of reviews | 80.3% of reviews — better |
| Number of ratings | 239 — better | 120 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #4 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.5 |
| Further details — not scored | ||
| Size | 24 MB | 220 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmac Mobile Developments, LLC | Garmin |
Customer experience
JB4 Mobile
Garmin Catalyst™
User reviews
JB4 Mobile
From 239 App Store ratingsWhat we love
- 🚀 Great app and a must have with the JB4
- 🔒 Robust security features
- 👍 Awesome data logging
- 👍 Incredible Support
- 👍 Works as expected
Room to improve
- 🐛 Doesn't work properly, screen upside down and backwards
- 🐛 Stopped working after update
- 🐛 Bluetooth connection issues
- 🐛 Gauges freezing
- 🐛 Screen turns off
Garmin Catalyst™
From 120 App Store ratingsWhat we love
- 👍 Easy to use interface
- 🚀 Great performance data
- 💡 Actionable driving insights
- 👍 Simple setup
- 👍 Great for track drivers
Room to improve
- 🐛 Glitches when logging in
- 🐛 App just glitches
- 🐛 Loading is soooo slow
- 🐛 Not user friendly
- 🐛 Comparing to friends frequently fails
Bugs and requests
JB4 Mobile
Reported bugs
5 issues- App crashes
- Can't connect to server
- Mirrored/inverted display
- Compatibility issues with new iOS versions
- Trouble logging in
Requested features
5 requests- Add CarPlay support
- Allow customizing map names
- Add more gauge styling options
- Improve UI and layout
- Integrate with Apple Carplay
Garmin Catalyst™
Reported bugs
7 issues- Everytime you try logging in the app just glitches anyways can’t even get logged in.
- Comparing to others frequently fails
- Compare to friend feature way to frequently fails with the message about the tracks not matching well enough despite being the same track on the same days even.
- New version is off
- It won’t let me compare the laps with other friends on the same day. Says lap not similar. Literally same day same track same session.
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- Friend integration is currently pretty lacking. When I try to compare laps it complains that the tracks aren't similar enough.
- Worse though is that there's no apparent way of sharing your sessions with friends.
Requested features
17 requests- Option to select 1-5 laps for optimum view
- Watch reference videos side by side on the Catalyst
- Add video review on phone or iPad
- Allow moving videos to iCloud for review
- Ability to download in-car camera footage directly from device to app
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- Compare data from other sessions
- Use for Sim racing games
- More functionality to come
- Make it even more simple
- Overall leaderboard
- Leaderboards of other tracks
- Compare session data between friends
- Fix track matching issues for friend comparison
- Allow browsing friend's sessions
- Add option to compare against other sessions
- Add dark mode option
- Add advanced analytics dashboard
In-app purchases
JB4 Mobile
No in-app purchases
Garmin Catalyst™
No in-app purchases
Questions
Is JB4 Mobile free?
Is Garmin Catalyst™ free?
Which has better reviews, JB4 Mobile or Garmin Catalyst™?
Do JB4 Mobile or Garmin Catalyst™ have ads?
Which is updated more often, JB4 Mobile or Garmin Catalyst™?
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