# Toolbox TREMEC U.S. vs Holley Terminator X

The clearest difference is rating: Holley Terminator X at 4.4 against Toolbox TREMEC U.S.'s 3.3. Toolbox TREMEC U.S.'s advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, ratings volume and ads 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 3.3. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

## The numbers

| Metric | Toolbox TREMEC U.S. | Holley Terminator X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/toolbox-tremec-us/id6466313595/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/holley-terminator-x/id6736920316/reviews)** |
| Number of ratings | 3 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Free | Free |
| Size | 6 MB | 227 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Grupo Kuo, S.A.B. de C.V.](https://appshunter.io/developer/1491302641) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### Toolbox TREMEC U.S.

[App page](https://appshunter.io/ios/app/toolbox-tremec-us/id6466313595)

This application simplifies driveline setup and predicts performance changes from gear ratios and tire size. It offers tools to calculate vehicle speed and RPM variables, aiding in rig planning and performance expectation.

**Highlights:** Driveline Angle Finder, RPM Calculator, Tire Size Calculator, Vehicle Speed Calculator, Performance prediction

**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 Toolbox TREMEC U.S. free?

Toolbox TREMEC U.S. 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, Toolbox TREMEC U.S. or Holley Terminator X?

Holley Terminator X is rated higher. Toolbox TREMEC U.S. averages 3.3 out of 5 from 3 ratings, while Holley Terminator X averages 4.4 from 5 ratings.

### Do Toolbox TREMEC U.S. or Holley Terminator X have ads?

Neither Toolbox TREMEC U.S. nor Holley Terminator X shows ads.

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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.*