# E vs PowerProbe Link

The clearest difference is review sentiment: E at 45% against PowerProbe Link's 0%. E also leads on rating (4.0 vs 3.5) and ratings volume (22 vs 4). PowerProbe Link's advantage is iOS requirement (13.0 vs 16.0). 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.

E holds the better App Store score, 4.0 against 3.5. That said, the two scores are not equally well evidenced: E has 22 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 45% of E's written reviews are positive against 0% of PowerProbe Link's.

E ships an update every 8 months, PowerProbe Link every 13 months. The most recent releases landed on August 29, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | E | PowerProbe Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (22 ratings)](https://appshunter.io/ios/app/e-tuner-4/id1579096205/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/powerprobe-link/id6476737385/reviews) |
| Number of ratings | **22** | 4 |
| Positive reviews | **45.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 50 MB | 4 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Edelbrock Corp](https://appshunter.io/developer/1579096297) | [MGL APPA CORPORATION](https://appshunter.io/developer/1121102475) |

## What reviewers say

### 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

**In-app purchases:** none


### PowerProbe Link

[App page](https://appshunter.io/ios/app/powerprobe-link/id6476737385)

This utility app connects to specific PowerProbe devices, enabling wireless data logging and remote monitoring. Users can download log data and export it to CSV files for analysis and reporting.

**Highlights:** Wireless data logging, Remote measurement monitoring, Log data download, CSV data export, Supports PowerProbe IT500, Supports DRAW MONITOR

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is PowerProbe Link free?

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

### Which has better reviews, E or PowerProbe Link?

E is rated higher. E averages 4.0 out of 5 from 22 ratings, while PowerProbe Link averages 3.5 from 4 ratings.

### Do E or PowerProbe Link have ads?

Neither E nor PowerProbe Link shows ads.

### Which is updated more often, E or PowerProbe Link?

E ships an update every 8 months, and PowerProbe Link every 13 months. Most recently, E was updated on August 29, 2026 and PowerProbe Link on September 20, 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.*