# Fuel vs TextSentinel

The clearest difference is in-app purchases: Fuel at none against TextSentinel's 1. Fuel also leads on iOS requirement (13.4 vs 16). TextSentinel's advantage is update cadence (every 2 days vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. TextSentinel sells 1 one-off in-app purchase. Fuel asks for nothing beyond the download.

Fuel ships an update every 10 months, TextSentinel every 2 days. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Fuel | TextSentinel |
| --- | --- | --- |
| 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 | **Every 2 days** |
| Monetization | Free | — |
| Size | 20 MB | 2 MB |
| Requires iOS | **13.4** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmac Mobile Developments, LLC](https://appshunter.io/developer/372235786) | [Roosevelt Bonaparte III](https://appshunter.io/developer/1878238935) |

## 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


### TextSentinel

[App page](https://appshunter.io/ios/app/textsentinel/id6759352107)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TextSentinel Pro | $4.99 | one-time |


## Frequently asked questions

### Is Fuel free?

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

### Is TextSentinel free?

TextSentinel is free to download, with in-app purchases available.

### Do Fuel or TextSentinel have ads?

Neither Fuel nor TextSentinel shows ads.

### Which is updated more often, Fuel or TextSentinel?

Fuel ships an update every 10 months, and TextSentinel every 2 days. Most recently, Fuel was updated on October 22, 2026 and TextSentinel on October 11, 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.*