Comparison

LunaOTP vs Open Authenticator by Skyost

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

Head to head
About

LunaOTP

This app provides secure two-factor authentication (2FA) for your online accounts using Apple's Keychain for storage. It offers encrypted iCloud sync, export/import options, and Face ID/Touch ID protection for enhanced security.

Highlights
  • Apple Keychain security
  • Encrypted iCloud sync
  • Export/Import OTP codes
  • Face ID and Touch ID support
  • Offline functionality
  • Category management
Read full description

Introducing LunaOTP - the paramount of secure two-factor authentication (2FA) for your Mac, iPhone, and iPad. In an era where digital security is non-negotiable, Luna OTP stands as a bastion of protection for your online accounts. It's your shield against unauthorized access in the vast expanse of the digital universe. Exclusive Keychain Security: LunaOTP champions unparalleled security by exclusively using Apple's Keychain to save your 2FA codes. This means your codes are stored in a highly secure, system-wide storage compartment designed by Apple, renowned for its robust encryption and security measures. With Luna OTP, your codes reside solely on your device and are never stored elsewhere. Key Features: Broad Service Compatibility: Seamlessly integrates with numerous services like Google, Heroku, Dropbox, Facebook, GitHub, and more, providing a versatile 2FA solution. Encrypted iCloud Sync: Experience the convenience of syncing your 2FA codes across all your devices with iCloud, fortified by top-tier encryption. Export/Import your OTP codes with password protection in JSON, plain Text or encrypted formats Organize your accounts with the new category management system Face ID and Touch ID Enabled: Safeguard your LunaOTP app with the cutting-edge Touch ID technology, ensuring that only you can access your sensitive 2FA codes. Offline Functionality: LunaOTP doesn't just work online; it ensures you have access to your 2FA codes even when you're disconnected from the internet. Privacy-Centric Approach: Your privacy is our top priority. LunaOTP is designed to be a fortress of privacy - we do not collect, store, or transmit any of your personal data. Rest assured, your information stays exclusively within the confines of your own device.

About

Open Authenticator by Skyost

This app generates Time-Based One-Time Passwords (TOTPs) to enhance online account security through two-factor authentication. It offers cross-platform syncing, a self-hostable backend, and an intuitive interface for managing your security codes.

Highlights
  • Generates Time-Based One-Time Passwords (TOTPs)
  • Enhances online account security with 2FA
  • Cross-platform token syncing
  • Self-hostable backend option
  • Fast and easy-to-use interface
  • Open-source and free for local use
Read full description

PROTECT YOUR ONLINE ACCOUNTS WITH OPEN AUTHENTICATOR Open Authenticator generates Time-Based One-Time Passwords (TOTPs), which serve as the second factor in the 2FA process. These temporary codes are valid for a short period of time and are used alongside your password to verify your identity when logging into your accounts. This significantly enhances the security of your online accounts and protects them from unauthorized access. KEY FEATURES - Open-Source & Free to use : Our commitment to transparency and security means our app is open-source and will always remain free for local use. If it doesn't cost anything for us, then it shouldn't cost anything for you ! - Cross-Platform Compatibility : Seamlessly sync your TOTP tokens across all your devices, whether you're using iOS, macOS or another platform. - Self-Hostable Backend : You can host the backend on your own server. Your data, your choice. - A lovely crafted app : Open Authenticator has been designed to be fast and easy to use. Quickly find all your TOTPs and copy them directly from the main page ! IN SUMMARY, WHY OPEN AUTHENTICATOR ? Here are the reasons why you should download Open Authenticator : - Enhanced Security : Protect your online accounts from unauthorized access with strong 2FA. - User-Friendly Interface : Intuitive design makes it easy to add, manage, and organize your TOTP tokens. - Continuous Improvement : We're dedicated to delivering the best user experience and regularly update our app with new features and improvements. LINKS - Check it out on Github : https://github.com/openauthenticator-app/openauthenticator - Visit our website : https://openauthenticator.app LEGAL - Privacy policy : https://openauthenticator.app/privacy-policy - Terms of service : https://openauthenticator.app/terms-of-service

Screenshots

LunaOTP4 screens
Open Authenticator by Skyost3 screens

Verdict

The call

The clearest difference is price: Open Authenticator by Skyost at Free against LunaOTP's $4.99. Open Authenticator by Skyost also leads on update cadence (fortnightly vs every 14 months) and ratings volume (9 vs 2). LunaOTP's advantage is rating (5.0 vs 4.4) and in-app purchases (none vs 2). On ads, device support and iOS requirement 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

Open Authenticator by Skyost is free to download; LunaOTP costs $4.99 up front. Open Authenticator by Skyost sells 2 in-app purchases, starting at $0.99 per month. LunaOTP asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

LunaOTP holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

UpkeepUpdate frequency

LunaOTP ships an update every 14 months, Open Authenticator by Skyost fortnightly. The most recent releases landed on June 4, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
LunaOTP versus Open Authenticator by Skyost: the parameters behind the verdict, then further details
ParameterLunaOTPOpen Authenticator by Skyost
Price$4.99Free — better
Rating5.0 (2 ratings) — better4.4 (9 ratings)
Positive reviews—0.0% of reviews
Number of ratings29 — better
Update frequencyEvery 14 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod, Mac — better
Requires iOS16.615.0 — better
Further details — not scored
Size2 MB56 MB
Age rating4+4+
DeveloperReza MoallemiHugo Delaunay

Customer experience

LunaOTP

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Open Authenticator by Skyost

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

LunaOTP

No in-app purchases

2 purchases

Open Authenticator by Skyost

Subscriptions2
  • Contributor Plan: Monthly$0.991 Month
  • Contributor Plan: Annual$9.991 Year

Questions

Is LunaOTP free?
LunaOTP costs $4.99, with no in-app purchases.
Is Open Authenticator by Skyost free?
Open Authenticator by Skyost is free to download, with in-app purchases available.
Which has better reviews, LunaOTP or Open Authenticator by Skyost?
LunaOTP is rated higher. LunaOTP averages 5.0 out of 5 from 2 ratings, while Open Authenticator by Skyost averages 4.4 from 9 ratings.
Do LunaOTP or Open Authenticator by Skyost have ads?
Neither LunaOTP nor Open Authenticator by Skyost shows ads.
Which is updated more often, LunaOTP or Open Authenticator by Skyost?
LunaOTP ships an update every 14 months, and Open Authenticator by Skyost fortnightly. Most recently, LunaOTP was updated on June 4, 2026 and Open Authenticator by Skyost on October 14, 2026.

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