# Boostane vs Holley Terminator X

The clearest difference is review sentiment: Holley Terminator X at 100% against Boostane's 7%. Holley Terminator X also leads on rating (4.4 vs 2.0) and update cadence (every 2 months vs every 14 months). Boostane's advantage is ratings volume (27 vs 5) and iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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 2.0. That said, the two scores are not equally well evidenced: Boostane has 27 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 7% of Boostane's written reviews are positive against 100% of Holley Terminator X's.

Boostane ships an update every 14 months, Holley Terminator X every 2 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Boostane | Holley Terminator X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (27 ratings)](https://appshunter.io/ios/app/boostane/id605708599/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/holley-terminator-x/id6736920316/reviews)** |
| Number of ratings | **27** | 5 |
| Positive reviews | 6.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 38 MB | 227 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BOOSTane, LLC](https://appshunter.io/developer/605708602) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### Boostane

[App page](https://appshunter.io/ios/app/boostane/id605708599)

Calculate the precise amount of octane booster needed to achieve your desired fuel octane. Save calculations, share them via email or text, and get estimated horsepower gains.

**Highlights:** Calculate required octane booster amount, Save calculations to favorites, Share calculations via email or text, Estimate horsepower gains, User-friendly design

**Features:** macOS Compatibility

**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 Boostane free?

Boostane 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.

### Which has better reviews, Boostane or Holley Terminator X?

Holley Terminator X is rated higher. Boostane averages 2.0 out of 5 from 27 ratings, while Holley Terminator X averages 4.4 from 5 ratings.

### Do Boostane or Holley Terminator X have ads?

Neither Boostane nor Holley Terminator X shows ads.

### Which is updated more often, Boostane or Holley Terminator X?

Boostane ships an update every 14 months, and Holley Terminator X every 2 months. Most recently, Boostane was updated on October 22, 2026 and Holley Terminator X on October 24, 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.*