# OTAC auth vs Ambit Client

The clearest difference is update cadence: Ambit Client at every 3 weeks against OTAC auth's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OTAC auth ships an update every 6 weeks, Ambit Client every 3 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | OTAC auth | Ambit Client |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/ambit-client/id6480317622/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 10 MB | 71 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [swIDch Limited](https://appshunter.io/developer/1723421198) | [Ambit, Inc](https://appshunter.io/developer/1496095048) |

## What reviewers say

### OTAC auth

[App page](https://appshunter.io/ios/app/otac-auth/id6475137518)

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

**In-app purchases:** none


### Ambit Client

[App page](https://appshunter.io/ios/app/ambit-client/id6480317622)

This VPN offers advanced security against future quantum computing threats by exclusively using CNSA 2.0 algorithms. It provides robust protection for sensitive business data, ensuring privacy and compliance in the evolving cyber landscape.

**Highlights:** Quantum-secure VPN, CNSA 2.0 algorithms, Post-quantum protection, VPP networking technology, Enterprise deployment

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

**In-app purchases:** none


## Frequently asked questions

### Is OTAC auth free?

OTAC auth is free to download, with no in-app purchases.

### Is Ambit Client free?

Ambit Client is free to download, with no in-app purchases.

### Do OTAC auth or Ambit Client have ads?

Neither OTAC auth nor Ambit Client shows ads.

### Which is updated more often, OTAC auth or Ambit Client?

OTAC auth ships an update every 6 weeks, and Ambit Client every 3 weeks. Most recently, OTAC auth was updated on October 5, 2026 and Ambit Client on October 12, 2026.

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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.*