# OT Advanced Authentication vs TD CRBS

The clearest difference is update cadence: OT Advanced Authentication at every 3 months against TD CRBS's every 17 months. OT Advanced Authentication also leads on device support (3 vs 1). TD CRBS's advantage is iOS requirement (11.4 vs 15). On price, ads and in-app purchases there is nothing between them.

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

OT Advanced Authentication ships an update every 3 months, TD CRBS every 17 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | OT Advanced Authentication | TD CRBS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (154 ratings)](https://appshunter.io/ios/app/ot-advanced-authentication/id843545585/reviews)** | — |
| Number of ratings | **154** | — |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 17 months |
| Monetization | Paid | — |
| Size | 4 MB | 19 MB |
| Requires iOS | 15 | **11.4** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [NetIQ Corporation](https://appshunter.io/developer/564830462) | [Trusted Systems Limited](https://appshunter.io/developer/1459972363) |

## What reviewers say

### OT Advanced Authentication

[App page](https://appshunter.io/ios/app/ot-advanced-authentication/id843545585)

Enhance security beyond traditional passwords with multifactor authentication. Protect sensitive data from fraud and unauthorized access with advanced verification methods.

**Highlights:** Multifactor authentication, Secure sensitive information, Step-up protection, Fraud prevention, Unauthorized access prevention

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast authentication process with biometric support
- ✅ Reliable functionality when working properly
- 🔒 Secure two-factor authentication method
- 👍 Easy to use interface once set up
- ⚡ Quick approval times with fingerprint/Face ID

**What reviewers complain about**

- 🐛 Push notifications frequently disappear or fail to appear
- ⏱️ Authentication requests timeout immediately after approval
- 🔄 Requires frequent re-authentication and manual app opening
- 😤 Difficult and confusing setup process
- 💥 Frequent crashes on newer iPhone models and iOS versions

**Reported bugs**

- Push notifications disappear immediately after appearing
- Authentication requests timeout within seconds of approval
- App crashes on iOS 14+ and iPhone 12/15 models
- Face ID gets stuck in loop requiring phone restart
- QR code scanner fails to work

**Requested features**

- Apple Watch support for direct approval without phone
- Biometric/Face ID authentication without PIN requirement
- Lock screen notification approval capability
- Persistent notification badges
- Ability to bulk delete request history


### TD CRBS

[App page](https://appshunter.io/ios/app/td-crbs/id1542916422)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OT Advanced Authentication free?

OT Advanced Authentication is free to download, with no in-app purchases.

### Is TD CRBS free?

TD CRBS is free to download, with no in-app purchases.

### Do OT Advanced Authentication or TD CRBS have ads?

Neither OT Advanced Authentication nor TD CRBS shows ads.

### Which is updated more often, OT Advanced Authentication or TD CRBS?

OT Advanced Authentication ships an update every 3 months, and TD CRBS every 17 months. Most recently, OT Advanced Authentication was updated on November 6, 2026 and TD CRBS on November 3, 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.*