# M.E.L.C. vs Refuel Buddy

The clearest difference is price: M.E.L.C. at Free against Refuel Buddy's $1.99. M.E.L.C. also leads on iOS requirement (13.0 vs 15.1). Refuel Buddy's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

M.E.L.C. is free to download; Refuel Buddy costs $1.99 up front. M.E.L.C. sells 1 one-off in-app purchase. Refuel Buddy asks for nothing beyond the download.

M.E.L.C. ships an update every 18 months, Refuel Buddy every 22 months. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | M.E.L.C. | Refuel Buddy |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/melc/id1315299613/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 22 months |
| Monetization | Free | — |
| Size | 6 MB | 6 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Janko Enke](https://appshunter.io/developer/1315299612) | [htin kyaw](https://appshunter.io/developer/1727112077) |

## What reviewers say

### M.E.L.C.

[App page](https://appshunter.io/ios/app/melc/id1315299613)

This tool helps aircraft engineers calculate the expiration dates for airplane defects based on minimum equipment lists. It provides a clear overview of all critical dates and allows for customization of defect categories.

**Highlights:** Calculate defect expiration dates, Supports categories A, B, C, D, View all important dates at a glance, Customize defect categories

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $0.99 | one-time |


### Refuel Buddy

[App page](https://appshunter.io/ios/app/refuel-buddy/id6477700959)

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

**In-app purchases:** none


## Frequently asked questions

### Is M.E.L.C. free?

M.E.L.C. is free to download, with in-app purchases available.

### Is Refuel Buddy free?

Refuel Buddy costs $1.99, with no in-app purchases.

### Do M.E.L.C. or Refuel Buddy have ads?

Neither M.E.L.C. nor Refuel Buddy shows ads.

### Which is updated more often, M.E.L.C. or Refuel Buddy?

M.E.L.C. ships an update every 18 months, and Refuel Buddy every 22 months. Most recently, M.E.L.C. was updated on October 6, 2026 and Refuel Buddy on October 1, 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.*