# Stellar OTP vs Authenticator App

The clearest difference is in-app purchases: Stellar OTP at none against Authenticator App's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Authenticator App sells 3 in-app purchases, starting at $7.99 per 7 days. Stellar OTP asks for nothing beyond the download.

## The numbers

| Metric | Stellar OTP | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 3 MB | 168 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Aleksey Krzhivitskiy](https://appshunter.io/developer/1613514160) | [REVENTY TEKNOLOJI ANONIM SIRKETI](https://appshunter.io/developer/1719623969) |

## What reviewers say

### Stellar OTP

[App page](https://appshunter.io/ios/app/stellar-otp/id6499083844)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-otp/id6748644516)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Premium Trial | $7.99 | per 7 days |
| Authenticator Premium Monthly | $14.99 | per month |
| Authenticator2fa Premium | $59.99 | per year |


## Frequently asked questions

### Is Stellar OTP free?

Stellar OTP is free to download, with no in-app purchases.

### Is Authenticator App free?

Authenticator App is free to download, with in-app purchases available.

### Do Stellar OTP or Authenticator App have ads?

Neither Stellar OTP nor Authenticator App shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*