Authenticator App vs I.O.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Authenticator App
Secure your online accounts with two-factor authentication. This app offers passwordless sign-ins, seamless autofill, and encrypted backups. It supports a vast range of services and works across Apple devices, with advanced security features like Face ID and Touch ID.
- Two-factor authentication (2FA)
- Multi-factor authentication (MFA)
- Passwordless sign-ins
- Seamless password autofill
- Encrypted iCloud backup
- Offline OTP generation
- Face ID & Touch ID security
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Authenticator is the ultimate solution for secure, convenient two-factor authentication (2FA) across your digital life. Empower your digital life with secure sign-ins across all online accounts using the strength of multi-factor authentication, passwordless convenience, and seamless password autofill.Optimized for iPhone and Apple Watch, and compatible with iPad and Mac, it's designed to work effortlessly with a multitude of services including Google, Facebook, Amazon, Microsoft, Instagram, WhatsApp, TikTok, LinkedIn, Twitter, YouTube, Blizzard, Thomson Reuters, Epic Games, Stripe, Federal Student Aid, AMFI, Warzone Mobile, Drake Tax, RealMe, Login.gov, RingCentra, Textbroker, Godaddy, Ring, Outlook, Xbox, eBay, PayPal, Snapchat, Dropbox, Spotify, Reddit, Pinterest, Shopify, Airbnb, Uber, Zoom, Slack, Coinbase, Roblox, GitHub, Twitch, Binance, Salesforce, Tesla, Nvidia, ProtonMail, Robinhood, Uphold, PlayStation, Threads, Fortnite, Crypto, Notion, Yahoo, Hulu, Netflix, Disney+, Venmo, Trello, Asana, Strava, Duolingo, DoorDash, Postmates, Grubhub, Discord, Bittrex, 1Password, Озон.Ключ and more. Comprehensive Features: - Extensive Compatibility: Authenticator integrates with a vast array of platforms, enhancing the security of your online presence across various services. - Encrypted iCloud Backup: Securely store your 2FA codes with encryption, ensuring you have access to your accounts even if your device is lost. The backup functionality is robust, supporting both manual backup and quick restoration. - Seamless Synchronization: Effortlessly sync your authentication tokens across iPhone, Apple Watch, iPad, and Mac. - Offline OTP Generation: Generate One-Time Passwords (OTPs) even in areas without internet connectivity, keeping your accounts secure at all times. - Advanced Security with Face ID & Touch ID: Utilize cutting-edge security features on your iPhone and Apple Watch for swift and secure access. - Efficient Setup & Management: Configure and manage all your accounts easily with QR code scanning and centralized account management. Subscription Details: Unlock the full potential of the app with advanced two-factor authentication (2FA) features by choosing from our yearly, monthly, or weekly plans, each offering an initial free trial to explore more. Additionally, we offer a one-time purchase option that provides full access to all our authenticator and two-factor (2FA) security features without the need for a subscription. Payments can be made through your Apple account, and subscriptions will auto-renew unless turned off at least 24 hours before the end of the current subscription period. Join our plans to find the best deal for enhanced security and authentication! Key Links: Privacy Policy: https://downloadauthenticator.com/privacy-policy/ Terms of Service: https://downloadauthenticator.com/terms-of-use/ With Authenticator, you can confidently secure your online accounts on a wide range of popular platforms, ensuring a safe and streamlined digital experience.
I.O.
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IO is an AI-human intelligence network - where user posts are discovered as part of your AI chats - letting you obtain a human input alongside AI output - while offering you an option to get discovered by sharing your knowledge with others. Just use our AI chat as you otherwise would - and use your account to post on any topic in order to be discovered in others' query-relevant AI chats. IO includes: - AI chatbot - a user oriented AI chat assistant able to generate input on any topic and include useful-only user posts - User account - your custom page with option to add info, upload posts, chat 1-on-1 with other users and a lot more - Units - join or create a unit and invite up to 100 other users to chat and share insights - Lounges - join or create a lounge and let thousands of others join and share in any interest Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://www.ioui.io/legal/privacy
Screenshots
Verdict
The clearest difference is update cadence: I.O. at every 2 days against Authenticator App's every 9 days. Authenticator App's advantage is device support (5 vs 3) and iOS requirement (13.0 vs 15.1). 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. Authenticator App sells 11 in-app purchases, starting at $5.99 per 7 days and I.O. sells 1 in-app purchase, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.
Authenticator App ships an update every 9 days, I.O. every 2 days. The most recent releases landed on September 28, 2026 and September 19, 2026 respectively.
| Parameter | Authenticator App | I.O. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (86 ratings) — better | — |
| Positive reviews | 20.0% of reviews | — |
| Number of ratings | 86 — better | — |
| Update frequency | Every 9 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 50 MB | 34 MB |
| Age rating | 4+ | 12+ |
| Developer | Hearttell US Limited | IO.OI. Inc. |
In-app purchases
Authenticator App
- Authenticator App 2FA Weekly$5.997 Days
- Authenticator_App_2FA_MFA_Week$6.997 Days
- Authenticator App Monthly3 Days trial$9.991 Month
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- Authenticator App 2FA Monthly$9.991 Month
- Authenticator App 2FA Monthly$19.991 Month
- Authenticator_App_Yearly$29.991 Year
- Authenticator App 2FA Yearly$39.991 Year
- Authenticator App Yearly3 Days trial$49.991 Year
- Authenticator_App_2FA_Yearly$49.991 Year
- Authenticator App One-time$49.99
- Authenticator_App_2FA_Onetime$99.99
I.O.
- IO Pro$10.001 Month
Questions
Is Authenticator App free?
Is I.O. free?
Do Authenticator App or I.O. have ads?
Which is updated more often, Authenticator App or I.O.?
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