# Optimal Authenticator vs API Tester(Pro)

The clearest difference is price: Optimal Authenticator at Free against API Tester(Pro)'s $2.99. API Tester(Pro)'s advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Optimal Authenticator is free to download; API Tester(Pro) costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Optimal Authenticator | API Tester(Pro) |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/optimal-authenticator/id1217402923/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 80 MB | 35 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Optimal IdM](https://appshunter.io/developer/1050742329) | [Hrishi Suthar](https://appshunter.io/developer/1660005858) |

## What reviewers say

### Optimal Authenticator

[App page](https://appshunter.io/ios/app/optimal-authenticator/id1217402923)

This app provides a secure way to verify your identity for accessing other applications. It uses two-factor authentication via push notifications or verification codes, and allows organizations to register trusted devices for sign-in requests.

**Highlights:** Two-factor authentication, Push notification verification, On-app verification codes, Trusted device registration, Secure identity verification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### API Tester(Pro)

[App page](https://appshunter.io/ios/app/api-testerpro/id6737351765)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Optimal Authenticator free?

Optimal Authenticator is free to download, with no in-app purchases.

### Is API Tester(Pro) free?

API Tester(Pro) costs $2.99, with no in-app purchases.

### Do Optimal Authenticator or API Tester(Pro) have ads?

Neither Optimal Authenticator nor API Tester(Pro) 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.*