# M.E.L.C. vs Aircraft Engineer Toolkit

The clearest difference is in-app purchases: Aircraft Engineer Toolkit at none against M.E.L.C.'s 1. Aircraft Engineer Toolkit also leads on update cadence (every 3 weeks vs every 18 months). M.E.L.C.'s advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. M.E.L.C. sells 1 one-off in-app purchase. Aircraft Engineer Toolkit asks for nothing beyond the download.

M.E.L.C. ships an update every 18 months, Aircraft Engineer Toolkit every 3 weeks. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | M.E.L.C. | Aircraft Engineer Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| 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 3 weeks** |
| Monetization | Free | — |
| Size | 6 MB | 5 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Janko Enke](https://appshunter.io/developer/1315299612) | [ABDULKADIR KURT](https://appshunter.io/developer/1896416537) |

## 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 |


### Aircraft Engineer Toolkit

[App page](https://appshunter.io/ios/app/aircraft-engineer-toolkit/id6778058385)

**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 Aircraft Engineer Toolkit free?

Aircraft Engineer Toolkit is free to download, with no in-app purchases.

### Do M.E.L.C. or Aircraft Engineer Toolkit have ads?

Neither M.E.L.C. nor Aircraft Engineer Toolkit shows ads.

### Which is updated more often, M.E.L.C. or Aircraft Engineer Toolkit?

M.E.L.C. ships an update every 18 months, and Aircraft Engineer Toolkit every 3 weeks. Most recently, M.E.L.C. was updated on September 19, 2026 and Aircraft Engineer Toolkit on September 8, 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.*