Notakey Authenticator vs Mega Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Notakey Authenticator
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Typical uses cases include: - VPN & workstation login protection; - mobile and web transaction approval for finance companies; - legal document signing; - passwordless web login. Compared to other solutions Notakey Authenticator is: - Lighting fast - uses push notifications and there is no need for manual code retyping; - Extremely secure - instead of shared secrets uses Public Key cryptography, where private key is generated and protected by phone's hardware; - Private & legally binding - user identification information is distributed on the phones. Previously only this has been available on eID card. Check out https://demobank.notakey.com/registration for possible use cases.
Mega Converter
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Every converter a professional reaches for, in one app. 36 categories, 198 units and 15 specialist tools that ordinary converter apps skip. Built for people who convert for a living: trades, engineers, designers, video editors, developers and cooks. And there is not a single ad in it. WHAT YOU CAN CONVERT • Convert length, weight, temperature, volume, area, speed and time • Work in pressure, torque, power, force, energy, density, flow and fuel economy • Check live exchange rates for 30 currencies, cached so they keep working offline • Match wire sizes with AWG to millimetre tables built for the job site • Run SMPTE timecode at every frame rate, drop frame handled correctly • Turn cups into grams for 25 real ingredients, with oven temperatures included • Compare time zones city by city and paste the result into a meeting invite • Convert colours across HEX, RGB, HSL and CMYK with contrast checks • Switch between binary, octal, decimal and hex with a 32 bit view • Calculate percentages, tips, discounts, date gaps and download times • Convert Roman numerals, paper sizes, Unix timestamps and more MADE FOR ACCURACY Conversion factors follow SI and NIST definitions, exact where an exact definition exists. Numbers stay monospaced while you type, results show sensible precision, and every tool works with no signal. SHARE THE ANSWER Every tool shares a clean text summary, so the person on the other end gets the conversion, the working and the source in one message. MEGACONVERT PRO One subscription unlocks every category and tool, billed monthly or yearly. Cancel any time in your Apple Account settings. The whole catalogue is free to browse before you decide. Terms of Use: https://www.termsfeed.com/live/aa943f0d-36cc-44f6-b89b-38d9e38c63f6 Privacy Policy: https://www.termsfeed.com/live/663d6495-624f-4e2f-974b-ec3ee69ad45a Download MegaConverter and stop searching the web for numbers you need in seconds. Terms: https://www.termsfeed.com/live/aa943f0d-36cc-44f6-b89b-38d9e38c63f6 Privacy Policy: https://www.termsfeed.com/live/663d6495-624f-4e2f-974b-ec3ee69ad45a
Screenshots
Verdict
The clearest difference is update cadence: Notakey Authenticator at every 6 weeks against Mega Converter's every 9 months. Notakey Authenticator also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.1). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Notakey Authenticator ships an update every 6 weeks, Mega Converter every 9 months. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.
| Parameter | Notakey Authenticator | Mega Converter |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.1 |
| Further details — not scored | ||
| Size | 89 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Notakey Latvia | Pedro Gregorio |
In-app purchases
Notakey Authenticator
No in-app purchases
Mega Converter
No in-app purchases
Questions
Is Notakey Authenticator free?
Is Mega Converter free?
Do Notakey Authenticator or Mega Converter have ads?
Which is updated more often, Notakey Authenticator or Mega Converter?
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