# EZ vs E

EZ and E both sit at 3.9 stars, but that hides the real split: 46% of E's written reviews are positive against 0% of EZ's. E also leads on ratings volume (24 vs 7). EZ's advantage is update cadence (monthly vs every 5 months) and iOS requirement (11.0 vs 16.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 3.9 for EZ against 3.9 for E. Both are backed by a comparable volume of ratings — 7 and 24 respectively. Written reviews are what separate them: 0% of EZ's written reviews are positive against 46% of E's.

EZ ships an update monthly, E every 5 months. The most recent releases landed on June 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | EZ | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/ez-tcu-trans-controller/id1434677792/reviews) | [3.9 (24 ratings)](https://appshunter.io/ios/app/e-tuner-4/id1579096205/reviews) |
| Number of ratings | 7 | **24** |
| Positive reviews | 0.0% of reviews | **46.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free | Free |
| Size | 11 MB | 51 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Performance Electronics](https://appshunter.io/developer/1161515426) | [Edelbrock Corp](https://appshunter.io/developer/1579096297) |

## What reviewers say

### EZ

[App page](https://appshunter.io/ios/app/ez-tcu-trans-controller/id1434677792)

Control your vehicle's transmission settings wirelessly from your iOS device. Adjust shift points, firmness, and aggressiveness with intuitive data logging and self-diagnostics. Includes an anti-theft feature for remote vehicle disabling.

**Highlights:** Wireless transmission control via Bluetooth, Adjust shift points, firmness, and aggressiveness, Data logging and self-diagnostics, Remote anti-theft vehicle disabling, No laptop or software required

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-tuner-4/id1579096205)

This app connects wirelessly to an EFI system, allowing users to monitor engine data and adjust various settings like air-fuel ratios and ignition timing. It offers a setup wizard for initial calibration and advanced tuning options for performance optimization.

**Highlights:** Bluetooth ECU communication, Live tuning of ECU settings, Real-time engine and sensor data monitoring, Setup Wizard for base calibration, Advanced tuning functions, Diagnostic troubleshooting page, Vivid gauge displays

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

**In-app purchases:** none


## Frequently asked questions

### Is EZ free?

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

### Is E free?

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

### Which has better reviews, EZ or E?

EZ and E are both rated 3.9 out of 5 on the App Store, from 7 and 24 ratings respectively.

### Do EZ or E have ads?

Neither EZ nor E shows ads.

### Which is updated more often, EZ or E?

EZ ships an update monthly, and E every 5 months. Most recently, EZ was updated on June 4, 2026 and E on September 29, 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.*