Comparison

FuelTech Vision vs Holley Terminator X

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FuelTech Vision

Features
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Configuration app for the VisionFT line (FT700 and FT700 Plus), including updates and analysis of the internal datalogger. Make any changes you need to every function available on the VCU, analyze datalogs and, for the first time, use telemetry. Receive and stream data in real time directly from laptops, desktops, tablets or phones, whether they run iOS, Android, Windows or Mac. This lets team members working on the same VCU at the same time analyze data and make changes faster.

About

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.

Highlights
  • 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
Read full description

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

FuelTech Vision4 screens
Holley Terminator X4 screens

Verdict

The call

The clearest difference is iOS requirement: Holley Terminator X at 15.0 against FuelTech Vision's 17. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 9 level
FuelTech Vision versus Holley Terminator X: the parameters behind the verdict, then further details
ParameterFuelTech VisionHolley Terminator X
PriceFreeFree
Rating—4.4 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS1715.0 — better
Further details — not scored
Size275 MB227 MB
Age rating4+4+
DeveloperFuelTechHolley Performance Products

In-app purchases

None

FuelTech Vision

No in-app purchases

None

Holley Terminator X

No in-app purchases

Questions

Is FuelTech Vision free?
FuelTech Vision is free to download, with no in-app purchases.
Is Holley Terminator X free?
Holley Terminator X is free to download, with no in-app purchases.
Do FuelTech Vision or Holley Terminator X have ads?
Neither FuelTech Vision nor Holley Terminator X shows ads.
Which is updated more often, FuelTech Vision or Holley Terminator X?
FuelTech Vision ships an update every 2 months, and Holley Terminator X every 2 months. Most recently, FuelTech Vision was updated on November 3, 2026 and Holley Terminator X on October 30, 2026.

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