# Authenticator App vs Imttech REMS IX

The clearest difference is in-app purchases: Imttech REMS IX at none against Authenticator App's 4. Authenticator App's advantage is update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Authenticator App sells 4 in-app purchases, starting at $7.99 per 7 days. Imttech REMS IX asks for nothing beyond the download.

Authenticator App ships an update monthly, Imttech REMS IX every 2 months. The most recent releases landed on October 12, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Authenticator App | Imttech REMS IX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.4K ratings)](https://appshunter.io/ios/app/authenticator-app-authkey/id6447845767/reviews)** | — |
| Number of ratings | **3.4K** | — |
| Positive reviews | 41.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 87 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [SkyRise Networks](https://appshunter.io/developer/1682862399) | [IMT TECH PTE. LTD.](https://appshunter.io/developer/1656172300) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-authkey/id6447845767)

Enhance your online security with this app, offering a secure and reliable method to protect your accounts. It generates unique codes for two-factor authentication, ensuring your personal information stays safe.

**Highlights:** Account protection with 2FA, Easy setup and management, Backup and sync accounts, Secure code generation

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Weekly Premium | $7.99 | per 7 days |
| Authenticator Monthly Premium | $8.99 | per month |
| Authenticator Yearly Premium | $49.99 | per year |
| Authenticator Lifetime Premium | $49.99 | one-time |

**What reviewers like**

- 👍 Seamless functionality
- 🚀 Quick and easy setup
- 🔒 Robust security features

**What reviewers complain about**

- 🐛 Compatibility issues
- 💰 Expensive subscription
- 🤯 Confusing user interface
- 🔒 Unreliable authentication

**Reported bugs**

- Unable to scan QR codes
- Accounts not showing up correctly
- Repeated login failures

**Requested features**

- Ability to add/manage multiple accounts
- Improved syncing across devices
- More transparent subscription model


### Imttech REMS IX

[App page](https://appshunter.io/ios/app/imttech-rems-ix/id6748666504)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App free?

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

### Is Imttech REMS IX free?

Imttech REMS IX is free to download, with no in-app purchases.

### Do Authenticator App or Imttech REMS IX have ads?

Neither Authenticator App nor Imttech REMS IX shows ads.

### Which is updated more often, Authenticator App or Imttech REMS IX?

Authenticator App ships an update monthly, and Imttech REMS IX every 2 months. Most recently, Authenticator App was updated on October 12, 2026 and Imttech REMS IX on September 26, 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.*