# REM vs Authenticator

The clearest difference is in-app purchases: REM at none against Authenticator's 2. REM also leads on iOS requirement (12.4 vs 18.5). Authenticator's advantage is update cadence (every 8 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator sells 2 in-app purchases, starting at $9.99 per 7 days. REM asks for nothing beyond the download.

REM ships an update every 6 weeks, Authenticator every 8 days. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | REM | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rem-i/id1596490465/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Free | — |
| Size | 40 MB | 29 MB |
| Requires iOS | **12.4** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Automobile Association of South Africa](https://appshunter.io/developer/1055934946) | [N & W DESIGN LTDA](https://appshunter.io/developer/1860207951) |

## What reviewers say

### REM

[App page](https://appshunter.io/ios/app/rem-i/id1596490465)

This app connects to wearable devices that provide emergency security and medical services. It allows users to summon help at the press of a button, with real-time location tracking and fall detection capabilities. It's designed for personal safety in various situations.

**Highlights:** SOS panic button activation, Real-time GPS tracking, Geofencing alerts, Accident and fall detection, SMS notifications for emergencies, Integration with 180+ security providers

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-encrypt-codes/id6760289642)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Instant Unlock | $9.99 | per 7 days |
| Instant Unlock Year | $54.99 | per year |


## Frequently asked questions

### Is REM free?

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

### Is Authenticator free?

Authenticator is free to download, with in-app purchases available.

### Do REM or Authenticator have ads?

Neither REM nor Authenticator shows ads.

### Which is updated more often, REM or Authenticator?

REM ships an update every 6 weeks, and Authenticator every 8 days. Most recently, REM was updated on September 25, 2026 and Authenticator on September 20, 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.*