Switch vs Holley Terminator X
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Switch
Control and program your Switch Panel Power Systems remotely via Bluetooth. Manage your SP8100, SP9100, and RCR-Force®12 systems directly from your connected device.
- Bluetooth connectivity
- Program switch panel systems
- Operate switch panel systems
- Compatible with SP8100, SP9100, RCR-Force®12
- Remote device control
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This application interfaces with the Switch-Pros Switch Panel Power Systems. It allows users to both program, and operate, their switch panel system using a Bluetooth connected device. Compatible with the SP8100, SP9100 and RCR-Force®12 switch panel systems. Support for this app will be provided by Off Road Engineering LLC, with assistance from the app developer, when necessary.
Holley Terminator X
Unlock advanced vehicle tuning control with this app. Fine-tune over 250 engine parameters for maximum performance using a mobile-friendly interface. Monitor vital engine data, create custom tunes, and share tuning files effortlessly.
- 250+ customizable engine parameters
- Real-time engine data monitoring
- Intuitive setup wizard for base tunes
- Create, manage, and share tuning files
- Record and share datalogs
- Step-by-step TPS setup
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UNLOCK THE NEXT LEVEL OF TUNING CONTROL FOR YOUR VEHICLE with the Holley Terminator X EFI mobile app — the ultimate companion for performance tuning right from your iPhone or iPad. Take control of your engine’s performance with 250+ CUSTOMIZABLE PARAMETERS FOR PRECISE TUNING. Designed for enthusiasts and professionals alike, the Holley Terminator X EFI app lets you FINE TUNE ENGINE PARAMETERS FOR MAXIMUM PERFORMANCE — all from the convenience of your mobile device. Key Features: · Six pre-defined real-time monitoring screens for instant access to vital engine data · Intuitive setup wizard helps you easily create a powerful base tune in minutes · View real-time gauges on screen at a glance – no laptop required · Effortlessly create, manage, and share your tuning files with others · Record and share datalogs to review your performance anytime, anywhere · Simple, step-by-step Throttle Position Sensor (TPS) setup for accurate control Built specifically for use with Holley’s Terminator X EFI systems, this app gives you advanced tuning capabilities in a streamlined, mobile-friendly interface. Perfect for racers, tuners, and performance enthusiasts — take your tuning to the next level and keep your engine dialed in with Holley. App Requires the Holley Bluetooth Module to connect to the Terminator X ECU.
Screenshots
Verdict
The clearest difference is rating: Holley Terminator X at 4.4 against Switch's 3.9. Holley Terminator X also leads on review sentiment (100% vs 64%) and update cadence (every 2 months vs every 12 months). Switch's advantage is ratings volume (25 vs 5) and iOS requirement (11.0 vs 15.0). 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.
Holley Terminator X holds the better App Store score, 4.4 against 3.9. That said, the two scores are not equally well evidenced: Switch has 25 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 64% of Switch's written reviews are positive against 100% of Holley Terminator X's.
Switch ships an update every 12 months, Holley Terminator X every 2 months. Both last shipped on October 24, 2026.
| Parameter | Switch | Holley Terminator X |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (25 ratings) | 4.4 (5 ratings) — better |
| Positive reviews | 63.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 25 — better | 5 |
| Update frequency | Every 12 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 32 MB | 227 MB |
| Age rating | 4+ | 4+ |
| Developer | Off Road Engineering LLC | Holley Performance Products |
Customer experience
Switch
Holley Terminator X
In-app purchases
Switch
No in-app purchases
Holley Terminator X
No in-app purchases
