Otro vs Authenticators App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Otro
Get a private, real second phone number for calls and texts on your iPhone. Keep your personal number private while using a dedicated line for work, sales, or online accounts. Enjoy unlimited domestic calling and texting with flexible credit options for international use.
- Real second phone number
- Private calls and texting
- No new SIM or device needed
- Unlimited domestic calls/texts
- International calling credits
- Secure account with Apple Sign-In
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Otro is a real second phone number for calls and texts, right on your iPhone. Choose a number in the country you need and start using it in minutes. No new SIM, no second device. Unlimited calls and texting are included in your plan. Calling and texting other countries is billed from your credit balance, and purchased credits never expire. Share your Otro number freely. Your real number stays private, always. Built for anyone who needs a second line: work calls kept separate from personal ones, a temporary number for marketplace sales or short-term rentals, or a private number for online accounts and dating apps. Sign in with Apple to secure your account and recover it on any device. Manage your subscription, top up credits, and check your rates from Settings. Subscriptions auto-renew until canceled and can be managed anytime in your iOS Settings. Otro's calls are audio-only over the internet and do not support emergency calls to 911, 112, or other local emergency numbers. Use your carrier's Phone app for emergencies. https://getotro.app/terms/
Authenticators App
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Keep your verification codes close at hand. Authenticators App generates one-time passwords for accounts that support two-factor authentication (2FA), even when your device is offline. EVERYDAY SIGN-INS, MADE SIMPLE • Generate time-based TOTP and counter-based HOTP codes. • Add accounts by scanning a setup QR code or entering a setup key. • Find accounts with search, groups and favorites. • See the countdown and copy a fresh code when you need it. • Lock access to the app with supported device biometrics or your device passcode. MOVING YOUR ACCOUNTS Import Google Authenticator transfer QR codes and review the accounts before adding them. For other services, use a compatible setup QR code or setup key. Create and restore local JSON backups for device transfers. Offline code generation does not require a cloud account. Optional account sync requires sign-in and an internet connection. Local backups contain account secrets and are not encrypted by the app; keep backup files private. Works with services that support standard TOTP or HOTP codes. It does not replace service-specific push approvals, passkeys or account recovery. Enable two-factor authentication in each service first, then add its setup details.
Screenshots
Verdict
The clearest difference is in-app purchases: Authenticators App at none against Otro's 6. Authenticators App also leads on device support (4 vs 1). On price, ads 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
Both are free to download. Otro sells 6 in-app purchases, starting at $7.99 per 7 days. Authenticators App asks for nothing beyond the download.
| Parameter | Otro | Authenticators App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 29 MB |
| Age rating | 4+ | 17+ |
| Developer | Can Tasar | Murat Cetin |
In-app purchases
Otro
- Weekly$7.997 Days
- Monthly$14.991 Month
- Yearly$79.991 Year
- 100 Credits$4.99
- 300 Credits$12.99
- 1000 Credits$34.99
Authenticators App
No in-app purchases









