# AirOTP vs M.E.L.C.

The clearest difference is review sentiment: M.E.L.C. at 75% against AirOTP's 25%. AirOTP's advantage is in-app purchases (none vs 1) and update cadence (every 8 days vs every 18 months). On price, ads, monetization model and device support there is nothing between them.

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

AirOTP ships an update every 8 days, M.E.L.C. every 18 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AirOTP | M.E.L.C. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/melc/id1315299613/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 25.0% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 18 months |
| Monetization | Free | Free |
| Size | 10 MB | 6 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [AirCUVE Inc.](https://appshunter.io/developer/898126646) | [Janko Enke](https://appshunter.io/developer/1315299612) |

## What reviewers say

### AirOTP

[App page](https://appshunter.io/ios/app/airotp/id1006417824)

This utility app provides one-time password (OTP) authentication for enhanced security. It supports easy account registration via QR code scanning and integrates with V-FRONT for web server, VPN, and network equipment logins.

**Highlights:** OTP authentication, QR-code account registration, V-FRONT integration, Web server login, VPN login, Network equipment login

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is AirOTP free?

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

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

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

### Do AirOTP or M.E.L.C. have ads?

Neither AirOTP nor M.E.L.C. shows ads.

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

AirOTP ships an update every 8 days, and M.E.L.C. every 18 months. Most recently, AirOTP was updated on October 2, 2026 and M.E.L.C. on October 6, 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.*