# ESY vs KMN

The clearest difference is iOS requirement: ESY at 9.0 against KMN's 15.1. 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.

ESY ships an update every 6 days, KMN every 5 days. The most recent releases landed on September 30, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | ESY | KMN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/kmn/id1522650645/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | Free | Free |
| Size | 40 MB | 25 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duc Nguyen](https://appshunter.io/developer/1371947194) | [Quan Pham](https://appshunter.io/developer/1473784880) |

## What reviewers say

### ESY

[App page](https://appshunter.io/ios/app/esy/id1372082428)

This app helps car owners understand their vehicle's health and performance. It connects to a hardware device on your car to provide real-time insights into any issues or unusual behavior, enabling better maintenance.

**Highlights:** Vehicle health diagnostics, Real-time performance tracking, Bluetooth connectivity, Issue identification, Maintenance guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### KMN

[App page](https://appshunter.io/ios/app/kmn/id1522650645)

This app allows users to verify the origin of gas cylinders and manage gas deliveries. It provides a convenient way to track and confirm gas product authenticity.

**Highlights:** Verify gas cylinder origin, Manage gas deliveries, Track gas product authenticity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ESY free?

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

### Is KMN free?

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

### Do ESY or KMN have ads?

Neither ESY nor KMN shows ads.

### Which is updated more often, ESY or KMN?

ESY ships an update every 6 days, and KMN every 5 days. Most recently, ESY was updated on September 30, 2026 and KMN on September 17, 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.*