Comparison

IDmelon Authenticator vs OneKeePass

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

IDmelon Authenticator

Transform your smartphone into a FIDO2 security key for passwordless logins on all your devices. Generate, store, and manage passkeys for secure and easy access to online accounts and applications. Compatible with major platforms like GitHub, Facebook, and Microsoft.

Highlights
  • Smartphone as FIDO2 security key
  • Passwordless logins
  • Passkey generation and management
  • Cross-device compatibility
  • Supports GitHub, Facebook, Microsoft
  • Tap & Login experience
Features
Read full description

Turn your smartphone into a USB FIDO2 security key that helps you go passwordless and keep your data safe on all devices. IDmelon enables you to turn your all-in-one smartphone into a FIDO security key. Once IDmelon is installed and activated on your smartphone, you will no longer deal with passwords on PC for login to Windows, online accounts, and applications. Instead, you will use passkeys for safer easier logins across all your devices without having to reregister credentials on every new device of yours. You can also use passkeys for login to accounts and applications on iOS devices and iPad/tablets. This means that you can generate, store, and manage passkeys to access your data, anywhere, anytime, on any of your devices. IDmelon is fully compatible with GitHub, Twitter, Facebook, Microsoft products and services such as Outlook, Office etc, as well as many more FIDO2 supported platforms. To set up your smartphone as a security key or a passkey manager, you will receive an activation link/button via email. After the activation process on your smartphone has finished, your smartphone is ready to work in combination with either IDmelon Pairing Tool or IDmelon Reader. You can pair your smartphone with PC via IDmelon Pairing Tool, which is a desktop/laptop app. To pair your smartphone with a PC, you need the IDmleon Pairing Tool installed on the computer first. Then, you scan a QR code on the PC screen only once, and from then on, a single tap on a push notification on your paired smartphone is enough to login! Notice: IDmelon Pairing Tool is compatible with macOS and Windows 10 or later (Entra ID, formerly known as Azure AD, joined). Permission notice: IDmelon Pairing Tool needs your permission to use smartphone camera only for the purpose of QR code scanning once to pair your smartphone with PC. To enjoy the unique Tap & Login experience, however, you need IDmelon Reader, which is a plug and play hardware that can be plugged into USB ports on PCs. Workspaces with shared computers are great places to use IDmelon Reader. With a single tap of your smartphone on Reader, you will receive a notification to login. Permission notice: To use IDmelon Reader, IDmelon app requires permission to access your smartphone's Bluetooth only for authentication purposes. Sometimes, your work might roll out IDmelon and ask you to set up your smartphone as a security key when accessing certain files, emails, or apps. So, you will receive an invitation email containing an activation link/button. You need to first install the IDmelon app on your smartphone to be able to click on the link/button on the same device on which the app is installed. Or, you may be empowered to use your ID badge or NFC card as a FIDO security key for the same purpose. To find out more, visit our website: https://www.idmelon.com/ License Agreement can be found at: https://www.idmelon.com/end-user-license-agreement/ For the latest Privacy Policy, see: https://www.idmelon.com/privacy-policy/

About

OneKeePass

Securely store and manage all your passwords and sensitive information in a single encrypted file. This app supports various cloud storage solutions and offers robust encryption to keep your data safe. It allows for multiple databases and provides features like password generation and auto-fill.

Highlights
  • KeePass-compatible database support
  • Encrypted storage for passwords and sensitive data
  • Multiple database support
  • Password generation
  • AutoFill functionality
  • Offline access
  • FaceID and PIN lock protection
Read full description

OneKeePass supports the well known KeePass-compatible database (Kdbx 4.x). It stores and manages all your passwords and other sensitive information in a single encrypted file that can be stored in any location, including local and public cloud solutions. You keep control of all your most sensitive information. The app relies on iOS provided integration with storage providers. By using the most recent encryption standards your data and passwords are always secure. OneKeePass not only takes care of your passwords; it keeps all your credit cards, driving licenses, membership cards, passport details and identities secure. Features Entries are grouped as Types or Categories or the standard Group tree Any number of custom fields can be added Custom fields can be organized as sections Any number of databases/vaults can be created and used - Separate your personal, family and work data in different databases. Search for entries Generate new strong passwords Fully offline Recycle bin to restore or permanently erase all deleted passwords History of each entry Multi-language support AutoFill supported - Username, Password and TOTP code Passkeys can be stored and used for authentications Time based One-Time Passwords (TOTP) can added and used Supports Light or Dark Theme Database quick opening using FaceID Native SFTP/WebDav connection Linked database opening support App protection with PIN lock Merging of databases Moving an entry or a group from one group to another Clone an entry OneKeePass is open source and ad-free. Please check the development status of the next updates: https://github.com/OneKeePass/mobile. Send issues to: https://github.com/OneKeePass/mobile/issues

Screenshots

IDmelon Authenticator4 screens
OneKeePass4 screens

Verdict

The call

The clearest difference is review sentiment: IDmelon Authenticator at 100% against OneKeePass's 33%. IDmelon Authenticator also leads on rating (4.7 vs 3.9) and update cadence (every 2 weeks vs every 2 months). OneKeePass's advantage is in-app purchases (none vs 2). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. IDmelon Authenticator sells 2 in-app purchases, starting at $5.99 per year. OneKeePass asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

IDmelon Authenticator holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 7 and 13 respectively. Written reviews point the same way: 100% of IDmelon Authenticator's written reviews are positive against 33% of OneKeePass's.

UpkeepUpdate frequency

IDmelon Authenticator ships an update every 2 weeks, OneKeePass every 2 months. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
IDmelon Authenticator versus OneKeePass: the parameters behind the verdict, then further details
ParameterIDmelon AuthenticatorOneKeePass
PriceFreeFree
Rating4.7 (7 ratings) — better3.9 (13 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings713 — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size165 MB90 MB
Age rating4+4+
DeveloperIDmelon Technologies IncJeyasankar Thenmani

Customer experience

IDmelon Authenticator

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OneKeePass

All ratings13 ratings
Positive69.2%
Neutral0.0%
Negative30.8%
Written reviews9 reviews
Positive33.3%
Neutral11.1%
Negative55.6%

In-app purchases

2 purchases

IDmelon Authenticator

Subscriptions2
  • IDmelon Standard$5.991 Year
  • IDmelon Premium$11.991 Year
None

OneKeePass

No in-app purchases

Questions

Is IDmelon Authenticator free?
IDmelon Authenticator is free to download, with in-app purchases available.
Is OneKeePass free?
OneKeePass is free to download, with no in-app purchases.
Which has better reviews, IDmelon Authenticator or OneKeePass?
IDmelon Authenticator is rated higher. IDmelon Authenticator averages 4.7 out of 5 from 7 ratings, while OneKeePass averages 3.9 from 13 ratings.
Do IDmelon Authenticator or OneKeePass have ads?
Neither IDmelon Authenticator nor OneKeePass shows ads.
Which is updated more often, IDmelon Authenticator or OneKeePass?
IDmelon Authenticator ships an update every 2 weeks, and OneKeePass every 2 months. Most recently, IDmelon Authenticator was updated on November 3, 2026 and OneKeePass on November 3, 2026.

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