# Spool Ethanol Analyzer vs My Flasher US

The clearest difference is review sentiment: My Flasher US at 75% against Spool Ethanol Analyzer's 40%. My Flasher US also leads on update cadence (weekly vs every 13 months) and rating (4.4 vs 4.1). Spool Ethanol Analyzer's advantage is iOS requirement (11.0 vs 15.4). On price, ratings volume, 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.

My Flasher US holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 14 and 7 respectively. Written reviews point the same way: 40% of Spool Ethanol Analyzer's written reviews are positive against 75% of My Flasher US's.

Spool Ethanol Analyzer ships an update every 13 months, My Flasher US weekly. The most recent releases landed on October 21, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Spool Ethanol Analyzer | My Flasher US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (14 ratings)](https://appshunter.io/ios/app/spool-ethanol-analyzer/id1418992096/reviews) | **[4.4 (7 ratings)](https://appshunter.io/ios/app/my-flasher-us/id6757482466/reviews)** |
| Number of ratings | **14** | 7 |
| Positive reviews | 40.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Free | Free |
| Size | 9 MB | 90 MB |
| Requires iOS | **11.0** | 15.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ajay Rajeev](https://appshunter.io/developer/1418992095) | [SwitchOver Inc.](https://appshunter.io/developer/1859933147) |

## What reviewers say

### Spool Ethanol Analyzer

[App page](https://appshunter.io/ios/app/spool-ethanol-analyzer/id1418992096)

This application connects to a wireless sensor kit to measure in-tank ethanol content and fuel temperature. It also features a mixing ratio calculator that can be used independently of the sensor hardware.

**Highlights:** Connects to Spool Wireless Ethanol Sensor Kit, Measures in-tank ethanol content, Measures fuel temperature, Includes mixing ratio calculator, Uses Low energy Bluetooth protocols, Fast and reliable data

**Features:** macOS Compatibility

**In-app purchases:** none


### My Flasher US

[App page](https://appshunter.io/ios/app/my-flasher-us/id6757482466)

This app allows users to tune and optimize their car's ECU through a connected plug-in dongle. It offers features like reading/writing ECU data, seamless dealer communication, and automatic vehicle identification for a personalized tuning experience.

**Highlights:** Read & Write ECU Data, Seamless Dealer Communication, Automatic Vehicle Identification, Secure and Easy-to-Use Interface, ECU Tuning and Optimization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spool Ethanol Analyzer free?

Spool Ethanol Analyzer is free to download, with no in-app purchases.

### Is My Flasher US free?

My Flasher US is free to download, with no in-app purchases.

### Which has better reviews, Spool Ethanol Analyzer or My Flasher US?

My Flasher US is rated higher. Spool Ethanol Analyzer averages 4.1 out of 5 from 14 ratings, while My Flasher US averages 4.4 from 7 ratings.

### Do Spool Ethanol Analyzer or My Flasher US have ads?

Neither Spool Ethanol Analyzer nor My Flasher US shows ads.

### Which is updated more often, Spool Ethanol Analyzer or My Flasher US?

Spool Ethanol Analyzer ships an update every 13 months, and My Flasher US weekly. Most recently, Spool Ethanol Analyzer was updated on October 21, 2026 and My Flasher US on October 7, 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.*