Pendulum vs Authenticator App · 2FA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pendulum
This app helps you manage your pen pal relationships by tracking correspondence. Record when you send and receive letters, note writing materials, and set reminders to stay in touch. Sync your data across devices for seamless management.
- Track sent and received letters
- Record pen, ink, and paper used
- Set reminders to write and post
- Monitor letter delivery times
- iCloud sync across devices
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Pendulum - keep track of your pen pals! • Add your friends, record when you send them letters or they send something to you. See how long it takes for your letters to arrive! • Record what pen, ink, and paper you used to write to each person, to keep the variety going each time you write. • Reminders to write back, or to post letters you've written but have sat by the front door for ages; you won't forget to stay in touch again. • Sync via iCloud, so you can keep up to date regardless of what device you have to hand.
Authenticator App · 2FA
This app provides an extra layer of security for your online accounts by generating time-based one-time passwords (TOTP/OTP) for two-factor authentication. It supports numerous services and offers features like encrypted sync, passkey support, and app-level security.
- Generate 2-factor authentication codes
- Support for passkeys and passwordless logins
- Encrypted sync and backup via iCloud/Google Cloud
- App-level security with Face ID/Touch ID
- Widgets for home screen access
- Organize codes with folders
- Import from Google Authenticator
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Authenticator App is a highly secure application designed to provide two-factor authentication (2FA) for your online accounts. By generating unique security token/time-based one-time password (TOTP/OTP), the 2FA Authenticator app provides an extra layer of protection to your accounts when logging in, mitigating the risks of unauthorized access and identity theft and managing all your device online apps 2-factor authentication codes with just one authentication app. Support logging in with passkeys and accounts synchronization across all kinds of smartphones, tablets and mac using iCloud & Google Cloud. We support any service that provides 2 step verification, including the most popular services like Microsoft, Google, Facebook, TikTok, PayPal, Amazon, Snapchat, Coinbase, Roblox, Discord, Twitch, Reddit, Epic, SAP, Shopify, Login.gov, Kick, Activision, NVIDIA, LastPass, Sony, One Healthcare ID, crypto, Stripe, Rockstar, Sprintax, Sterling, Ubisoft, Autotask, Instagram, Air Force, GitHub, mo.gov. Our 2fa Authenticator app ensures the security of your personal data and Apple passwords, safeguarding them from hackers and malicious attacks. Download this authenticator (T)OTP manager now to fortify your digital security! Key Features: 1. Store and generate 2-factor Authentication code/security token. The 2 step verification code will update to a new one every 30 seconds. 2. Easy to setup two-factor Authentication. Scan QR Code or enter manually to add Authenticator secure ID, support import from Google Authenticator. 3. User-friendly guide. The 2FA authentication application has instructions that describe basic steps, such as adding 2FA/MFA/(T)OTP Code. 4. Encrypted sync & backup using iCloud & Google Cloud. Sync your accounts across iPhone, iPad, Mac, Apple Watch and any other smartphones or tablets. 5. Backup codes & Recovery codes. Easily manage and recognize codes using OCR. 6. Support Passkeys. Enhance account security with passwordless logins and prevent hacking attacks. 7. Support Passwords. Auto generate strong passwords and enjoy AutoFill. 8. Widgets. You can access and copy your two factor Authentication Code on homescreen. 9. Live Activities. You can access the copied 2 step verification code & its validity time on Dynamic Island. 10. App level security by Face ID/Touch ID. You are the only one who can read your two factor authentication otp codes. 11. Folders. Too many keys? Don't worry, manage your keys with custom groups. 12. Support 14 languages: English, German, French, Japanese, Korean, Italian, Spanish, Portuguese, Russian, Simplified Chinese, Traditional Chinese, Polish, Ukrainian. Subscription Terms: This (T)OTP Apple password/passkey authentication app offers monthly or annual subscriptions to provide you with unlimited access to all features while you maintain an active subscription. 1. Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. 2. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. 3. Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal. 4. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. 5. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. If you have any thoughts, questions or suggestions about our security service app, please feel free to contact us at feedback@firstorder.ai. Home Page: https://authenticator.firstorder.ai Terms of Use: https://authenticator.firstorder.ai/terms-of-service Privacy Policy: https://authenticator.firstorder.ai/privacy-policy-authenticator
Screenshots
Verdict
The clearest difference is monetization model: Pendulum at free with in-app purchases against Authenticator App · 2FA's subscription. Pendulum also leads on ads (none vs shown) and review sentiment (67% vs 45%). Authenticator App · 2FA's advantage is ratings volume (379 vs 16) and device support (5 vs 2). On price, rating 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. Pendulum sells 5 one-off in-app purchases and Authenticator App · 2FA sells 14 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.2 for Pendulum against 4.2 for Authenticator App · 2FA. That said, the two scores are not equally well evidenced: Authenticator App · 2FA has 379 ratings behind it against 16, so its average is the more settled of the two. Written reviews are what separate them: 67% of Pendulum's written reviews are positive against 45% of Authenticator App · 2FA's.
Pendulum ships an update every 9 days, Authenticator App · 2FA every 3 weeks. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.
| Parameter | Pendulum | Authenticator App · 2FA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (16 ratings) | 4.2 (379 ratings) |
| Positive reviews | 66.7% of reviews — better | 45.3% of reviews |
| Number of ratings | 16 | 379 — better |
| Update frequency | Every 9 days — better | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac, Apple Watch — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 114 MB |
| Age rating | 4+ | 17+ |
| Developer | Benjamin Cardy | Shanghai FirstOrder Technology Co., Ltd |
Customer experience
Pendulum
Authenticator App · 2FA
Bugs and requests
Pendulum
Not enough reviews yet to summarise bugs or requests.
Authenticator App · 2FA
Reported bugs
7 issues- QR code scanner not functioning properly
- Unable to import keys on mobile without payment
- Sync issues between Mac and iOS devices
- Photo-based QR code reading fails
- App incompatible with CachyOS
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- Accidental subscription triggering
- Cancellation form submission failures
Requested features
5 requests- CachyOS/Arch Linux version support
- Clearer pricing and subscription information upfront
- Manual code entry without QR scanner requirement
- Better cross-platform synchronization documentation
- Improved setup instructions for new devices
In-app purchases
Pendulum
- Extra Fine Tip$0.99
- Fine Tip$1.99
- Medium Tip$3.99
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- Broad Tip$5.99
- Stub Tip$9.99
Authenticator App · 2FA
- Authenticator PRO Weekly3 Days trial$9.997 Days
- Authenticator Monthly Premium3 Days trial$11.991 Month
- Authenticator Monthly Premium$11.991 Month
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- Authenticator Monthly Premium3 Days trial$12.991 Month
- Authenticator PRO Monthly$12.991 Month
- Authenticator Annual Premium$29.991 Year
- Authenticator PRO Yearly$29.991 Year
- Authenticator PRO Yearly3 Days trial2 variants$39.991 Year
- OTP Authenticator PRO Yearly$39.991 Year
- OTP Authenticator PRO Yearly$49.991 Year
- Authenticator PRO Lifetime$39.99
- Authenticator PRO Lifetime$59.99
- 2FA Authenticator - Pro$59.99
Show 1 moreShow fewer
- Authenticator PRO Lifetime$79.99
Questions
Is Pendulum free?
Is Authenticator App · 2FA free?
Which has better reviews, Pendulum or Authenticator App · 2FA?
Do Pendulum or Authenticator App · 2FA have ads?
Which is updated more often, Pendulum or Authenticator App · 2FA?
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