# Bowler All vs E

The clearest difference is rating: E at 3.9 against Bowler All's 3.4. E also leads on update cadence (every 4 months vs every 13 months) and ratings volume (24 vs 5). 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.

E holds the better App Store score, 3.9 against 3.4. Both are backed by a comparable volume of ratings — 5 and 24 respectively.

Bowler All ships an update every 13 months, E every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Bowler All | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/bowler-all-in-one/id1249619575/reviews) | **[3.9 (24 ratings)](https://appshunter.io/ios/app/e-tuner-4/id1579096205/reviews)** |
| Number of ratings | 5 | **24** |
| Positive reviews | — | 46.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 21 MB | 51 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bowler Performance Transmissions](https://appshunter.io/developer/1249619574) | [Edelbrock Corp](https://appshunter.io/developer/1579096297) |

## What reviewers say

### Bowler All

[App page](https://appshunter.io/ios/app/bowler-all-in-one/id1249619575)

Configure and diagnose a specific vehicle harness wirelessly. Calibrate the speedometer in real-time with an assistant to maintain consistent speeds during adjustments.

**Highlights:** Wireless harness setup, Harness diagnostics, Live speedometer calibration, Vehicle speed adjustment assistant

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

**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 Bowler All free?

Bowler All 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, Bowler All or E?

E is rated higher. Bowler All averages 3.4 out of 5 from 5 ratings, while E averages 3.9 from 24 ratings.

### Do Bowler All or E have ads?

Neither Bowler All nor E shows ads.

### Which is updated more often, Bowler All or E?

Bowler All ships an update every 13 months, and E every 4 months. Most recently, Bowler All was updated on November 2, 2026 and E on November 3, 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.*