D vs Garmin Catalyst™
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."
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 review sentiment: Garmin Catalyst™ at 80% against D's 13%. Garmin Catalyst™ also leads on rating (4.8 vs 1.9) and update cadence (monthly vs every 5 months). D's advantage is iOS requirement (11.0 vs 16.5). On price, ratings volume, ads and in-app purchases 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.
Garmin Catalyst™ holds the better App Store score, 4.8 against 1.9. Both are backed by a comparable volume of ratings — 126 and 120 respectively. Written reviews point the same way: 13% of D's written reviews are positive against 80% of Garmin Catalyst™'s.
D ships an update every 5 months, Garmin Catalyst™ monthly. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.
| Parameter | D | Garmin Catalyst™ |
|---|---|---|
| Price | Free | Free |
| Rating | 1.9 (126 ratings) | 4.8 (120 ratings) — better |
| Positive reviews | 12.5% of reviews | 80.3% of reviews — better |
| Number of ratings | 126 — better | 120 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.5 |
| Further details — not scored | ||
| Size | 68 MB | 220 MB |
| Age rating | 4+ | 4+ |
| Developer | Dinan Corp | Garmin |
Customer experience
D
Garmin Catalyst™
Bugs and requests
D
Not enough reviews yet to summarise bugs or requests.
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
D
No in-app purchases
Garmin Catalyst™
No in-app purchases
