# IMCSM IRT vs Authenticator

The clearest difference is in-app purchases: IMCSM IRT at none against Authenticator's 6. Authenticator's advantage is update cadence (every 2 months vs every 8 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Authenticator sells 5 in-app purchases, starting at $4.99 per 7 days. IMCSM IRT asks for nothing beyond the download.

IMCSM IRT ships an update every 8 months, Authenticator every 2 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | IMCSM IRT | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/authenticator-2fa-code/id6502896786/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 58 MB |
| Requires iOS | **14.0** | 14.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MariApps Marine Solutions Pvt. Ltd.](https://appshunter.io/developer/1040404561) | [林炽 钟](https://appshunter.io/developer/1743430951) |

## What reviewers say

### IMCSM IRT

[App page](https://appshunter.io/ios/app/imcsm-irt/id6468866173)

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

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-code/id6502896786)

Enhance your online security with two-factor authentication. This app acts as a password manager, generating strong passwords and offering auto-fill for convenient and secure logins. It supports a wide range of services and securely backs up your data with encryption.

**Highlights:** Two-factor authentication, Password manager, QR code scanning, Auto-fill login information, Strong password generation, Encrypted data backup, Biometric unlock

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator - 1 Week | $4.99 | per 7 days |
| Authenticator 1 Month | $9.99 | per month |
| Authenticator - 1 Year | $29.99 | per year |
| Authenticator 1 Year | $39.99 | per year |
| Authenticator - Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is IMCSM IRT free?

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

### Is Authenticator free?

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

### Do IMCSM IRT or Authenticator have ads?

Neither IMCSM IRT nor Authenticator shows ads.

### Which is updated more often, IMCSM IRT or Authenticator?

IMCSM IRT ships an update every 8 months, and Authenticator every 2 months. Most recently, IMCSM IRT was updated on September 29, 2026 and Authenticator on October 6, 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.*