# OT Advanced Authentication vs E

The clearest difference is update cadence: E at every 2 weeks against OT Advanced Authentication's every 3 months. 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.

OT Advanced Authentication ships an update every 3 months, E every 2 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | OT Advanced Authentication | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (149 ratings)](https://appshunter.io/ios/app/ot-advanced-authentication/id843545585/reviews)** | — |
| Number of ratings | **149** | — |
| Positive reviews | 13.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 4 MB | 82 MB |
| Requires iOS | **15** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NetIQ Corporation](https://appshunter.io/developer/564830462) | [E-Data Now Limited](https://appshunter.io/developer/633948923) |

## 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


### E

[App page](https://appshunter.io/ios/app/e-data-now/id1578508914)

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

**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 E free?

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

### Do OT Advanced Authentication or E have ads?

Neither OT Advanced Authentication nor E shows ads.

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

OT Advanced Authentication ships an update every 3 months, and E every 2 weeks. Most recently, OT Advanced Authentication was updated on October 2, 2026 and E on October 1, 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.*