# Holley Terminator X vs Aces Connect

The clearest difference is rating: Aces Connect at 5.0 against Holley Terminator X's 4.4. Aces Connect also leads on iOS requirement (13.0 vs 15.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

Aces Connect holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | Holley Terminator X | Aces Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/holley-terminator-x/id6736920316/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/aces-connect/id6749562285/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 227 MB | 45 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Holley Performance Products](https://appshunter.io/developer/1175069390) | [ACES FUEL INJECTION INC](https://appshunter.io/developer/1831183190) |

## What reviewers say

### 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


### Aces Connect

[App page](https://appshunter.io/ios/app/aces-connect/id6749562285)

Wirelessly control your engine's EFI system with real-time data monitoring and instant adjustments. Tune your engine on the fly and review detailed performance logs through an intuitive interface.

**Highlights:** Wireless Bluetooth connection, Real-time engine data monitoring, Instant tuning adjustments, Performance data logging, Customizable dashboards

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

**In-app purchases:** none


## Frequently asked questions

### Is Holley Terminator X free?

Holley Terminator X is free to download, with no in-app purchases.

### Is Aces Connect free?

Aces Connect is free to download, with no in-app purchases.

### Which has better reviews, Holley Terminator X or Aces Connect?

Aces Connect is rated higher. Holley Terminator X averages 4.4 out of 5 from 5 ratings, while Aces Connect averages 5.0 from 4 ratings.

### Do Holley Terminator X or Aces Connect have ads?

Neither Holley Terminator X nor Aces Connect shows ads.

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

Holley Terminator X ships an update every 2 months, and Aces Connect every 2 months. Most recently, Holley Terminator X was updated on October 30, 2026 and Aces Connect 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.*