# Octopus Authenticator vs ATCA Events

The clearest difference is update cadence: Octopus Authenticator at every 2 months against ATCA Events's every 7 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.

Octopus Authenticator ships an update every 2 months, ATCA Events every 7 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Octopus Authenticator | ATCA Events |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (163 ratings)](https://appshunter.io/ios/app/octopus-authenticator/id1220959010/reviews)** | — |
| Number of ratings | **163** | — |
| Positive reviews | 22.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Free | — |
| Size | 17 MB | 72 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Secret Double Octopus](https://appshunter.io/developer/1104607728) | [Air Traffic Control Association, Inc.](https://appshunter.io/developer/511926096) |

## What reviewers say

### Octopus Authenticator

[App page](https://appshunter.io/ios/app/octopus-authenticator/id1220959010)

This app eliminates the need for passwords, offering a seamless and consistent login experience for users throughout their workday. Organizations benefit from enhanced security and control over credentials for various accounts and applications.

**Highlights:** Passwordless login, Seamless user experience, High assurance security, Credential control, Cross-domain authentication

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Faster than other MFA
- 👍 No password needed
- 👍 FaceID integration
- 👍 Responsive, pushes arrive immediately
- 👍 Works perfectly for years

**What reviewers complain about**

- 🐛 Annoying Bluetooth notification
- 🐛 Daily annoyance with Bluetooth pop-up
- 🐛 Update wiped out account info
- 🐛 Non-intuitive and painful
- 🐛 Confusing and difficult

**Reported bugs**

- Bluetooth notification impossible to get rid of
- App pops up asking for Bluetooth access even when not needed
- Update wiped out all account info
- Constant issues: connection problems, app locks up, pings but won't respond
- Apple Watch app hangs 90% of the time

**Requested features**

- Fix Bluetooth notification issue
- Allow opting out of Bluetooth notifications
- Improve Apple Watch app reliability
- Allow authentication from notification
- Fix watch app hanging issue


### ATCA Events

[App page](https://appshunter.io/ios/app/atca-events/id6469642578)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Octopus Authenticator free?

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

### Is ATCA Events free?

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

### Do Octopus Authenticator or ATCA Events have ads?

Neither Octopus Authenticator nor ATCA Events shows ads.

### Which is updated more often, Octopus Authenticator or ATCA Events?

Octopus Authenticator ships an update every 2 months, and ATCA Events every 7 months. Most recently, Octopus Authenticator was updated on October 24, 2026 and ATCA Events on October 25, 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.*