# Fuel vs Check Engine BaT Watcher

The clearest difference is in-app purchases: Fuel at none against Check Engine BaT Watcher's 1. Fuel also leads on iOS requirement (13.4 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Check Engine BaT Watcher sells 1 in-app purchase, starting at $1.99 per month. Fuel asks for nothing beyond the download.

## The numbers

| Metric | Fuel | Check Engine BaT Watcher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (33 ratings)](https://appshunter.io/ios/app/fuel-it-eca/id1004246767/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | — |
| Size | 20 MB | 3 MB |
| Requires iOS | **13.4** | 26.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [Kaldrin LLC.](https://appshunter.io/developer/1824712335) |

## What reviewers say

### Fuel

[App page](https://appshunter.io/ios/app/fuel-it-eca/id1004246767)

Monitor your vehicle's ethanol concentration and fuel temperature in real-time. This app wirelessly connects to a compatible Bluetooth module, freeing up your device's port for simultaneous charging and monitoring. It includes an ethanol fill-up concentration calculator and customizable display views.

**Highlights:** Real-time ethanol concentration monitoring, Real-time fuel temperature monitoring, Wireless Bluetooth connectivity, Ethanol fill-up concentration calculator, Fahrenheit or Celsius display options, Two display views

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

**In-app purchases:** none


### Check Engine BaT Watcher

[App page](https://appshunter.io/ios/app/check-engine-bat-watcher/id6758899392)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $1.99 | per month |


## Frequently asked questions

### Is Fuel free?

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

### Is Check Engine BaT Watcher free?

Check Engine BaT Watcher is free to download, with in-app purchases available.

### Do Fuel or Check Engine BaT Watcher have ads?

Neither Fuel nor Check Engine BaT Watcher 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.*