# FuelTech Vision vs Holley Terminator X

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.

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

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

## The numbers

| Metric | FuelTech Vision | Holley Terminator X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/holley-terminator-x/id6736920316/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 275 MB | 227 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FuelTech](https://appshunter.io/developer/519474170) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### FuelTech Vision

[App page](https://appshunter.io/ios/app/fueltech-vision/id6467269532)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Holley Terminator X

[App page](https://appshunter.io/ios/app/holley-terminator-x/id6736920316)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*