D vs JB4 PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
Control your engine's performance with a connected tuner. Adjust boost levels for fuel efficiency or increased power, choosing from five distinct settings. Monitor real-time and peak boost pressure directly from your smartphone.
- Adjust engine boost levels
- 5 power settings (Valet, Stock, Sport, Sport+, Race)
- Monitor live boost pressure
- Monitor peak boost pressure
- Control engine performance
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*** Requires DINANTronics SPORT Performance Tuner Take full control of your engine's performance with the DINANTronics SPORT Tuner and this app. Turn down your boost for fuel savings or valet parking, or increase it to boost your engine's power output. The control panel allows the user to chose between 5 power settings - 1. Valet 2. Stock 3. Sport 4. Sport+ 5. Race Monitor live boost pressure and peak boost pressure using your phone. "Continued use of GPS running in the background can dramatically decrease battery life."
JB4 PRO
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.
- Change maps
- Monitor live engine data
- Record logs
- Manage fault codes
- Update JB4 firmware
- Smartphone integration
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Smart phone integration for your JB4 performance tuner to change maps, monitor live engine data, record logs, manage fault codes, update JB4 firmware, and much more! Note the JB4 PRO free app requires the JB4 PRO BT adapter and is not compatible with the JB4 Mobile BT adapter.
Screenshots
Verdict
The clearest difference is rating: JB4 PRO at 4.4 against D's 1.9. JB4 PRO also leads on review sentiment (50% vs 13%) and update cadence (fortnightly vs every 5 months). D's advantage is ratings volume (124 vs 14) and iOS requirement (11.0 vs 16.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
JB4 PRO holds the better App Store score, 4.4 against 1.9. That said, the two scores are not equally well evidenced: D has 124 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 13% of D's written reviews are positive against 50% of JB4 PRO's.
D ships an update every 5 months, JB4 PRO fortnightly. The most recent releases landed on September 20, 2026 and September 13, 2026 respectively.
| Parameter | D | JB4 PRO |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (124 ratings) | 4.4 (14 ratings) — better |
| Positive reviews | 12.5% of reviews | 50.0% of reviews — better |
| Number of ratings | 124 — better | 14 |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 68 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Dinan Corp | Burger Motorsports, Inc |
Customer experience
D
JB4 PRO
In-app purchases
D
No in-app purchases
JB4 PRO
No in-app purchases
