# Isosec Authenticator vs iArrest

The clearest difference is update cadence: Isosec Authenticator at every 4 months against iArrest's every 13 months. iArrest's advantage is iOS requirement (12.0 vs 15.6). On price, review sentiment, 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.

Isosec Authenticator ships an update every 4 months, iArrest every 13 months. The most recent releases landed on September 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Isosec Authenticator | iArrest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/iarrest/id1280974002/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **100.0% of reviews** | 94.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 9 MB | 31 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Isosec Ltd](https://appshunter.io/developer/932317463) | [Maximilian Neun](https://appshunter.io/developer/1280974001) |

## What reviewers say

### Isosec Authenticator

[App page](https://appshunter.io/ios/app/isosec-authenticator/id1229109210)

This app provides secure and convenient access to NHS clinical systems using a cloud-based virtual smartcard. It offers faster authentication, simplified logins, and two-factor security for e-prescribing and other critical healthcare applications.

**Highlights:** NHS Spine and Windows AD authentication, Faster, simpler, and safer access, Two-factor authentication via QR code or push, Digital signature for e-prescribing, Cloud-based and device-agnostic, Easy self-service portal

**Features:** macOS Compatibility

**In-app purchases:** none


### iArrest

[App page](https://appshunter.io/ios/app/iarrest/id1280974002)

This app assists healthcare professionals during cardiac arrest calls by providing structured guidance based on the latest resuscitation guidelines. It includes timers for critical interventions and generates detailed event logs for documentation. Designed for paramedics and hospital clinicians, it acts as a reminder for essential tasks in high-pressure situations.

**Highlights:** Structured cardiac arrest guidance, Adult resuscitation scenarios, Based on UK Resuscitation Council Guidelines 2021, Timers for rhythm analysis and adrenaline, Audible and visual intervention reminders, Continuous use prevention of sleep mode, Detailed event logging

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

**In-app purchases:** none


## Frequently asked questions

### Is Isosec Authenticator free?

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

### Is iArrest free?

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

### Do Isosec Authenticator or iArrest have ads?

Neither Isosec Authenticator nor iArrest shows ads.

### Which is updated more often, Isosec Authenticator or iArrest?

Isosec Authenticator ships an update every 4 months, and iArrest every 13 months. Most recently, Isosec Authenticator was updated on September 16, 2026 and iArrest on September 21, 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.*