AirOTP vs M.E.L.C.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AirOTP
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.
- OTP authentication
- QR-code account registration
- V-FRONT integration
- Web server login
- VPN login
- Network equipment login
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AirOTP is a mobile application that provides OTP authentication for V-FRONT 2 Factor Authentication Server. [ Main function ] - Easily register your account with QR-Code - OTP (One-Time Password) authentication [ Usage information ] - AirOTP is available through V-FRONT, an additional authentication enhancement solution of AirCUVE Co., Ltd. - V-FRONT implements additional authentication during the login of web server, VPN, VDI, and network equipment(Telnet). [ Access permission ] - Camera : Providing account registration through QR-Code * For more information, please check the AirCUVE Co., Ltd. website (www.aircuve.com).
M.E.L.C.
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.
- Calculate defect expiration dates
- Supports categories A, B, C, D
- View all important dates at a glance
- Customize defect categories
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M.E.L.C. is a tool for the aircraft engineers to calculate the expire date (with Category A, B, C and D) of defected airplanes in accordance with the minimum equipment list. With one quick view all important dates are visible. And a function to customize all categories.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | AirOTP | M.E.L.C. |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews | 75.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 8 days — better | Every 18 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch — better |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 10 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | AirCUVE Inc. | Janko Enke |
Customer experience
AirOTP
M.E.L.C.
In-app purchases
AirOTP
No in-app purchases
M.E.L.C.
- Full version$0.99
