# CRDB OTP vs Metro Bank Authenticator

The clearest difference is iOS requirement: CRDB OTP at 12.0 against Metro Bank Authenticator's 14.0. On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 12 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CRDB OTP | Metro Bank Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/crdb-otp/id1412704941/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | Every 12 months |
| Monetization | Free | Free |
| Size | 21 MB | 12 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [CRDB BANK PLC](https://appshunter.io/developer/1291776872) | [MetroBank](https://appshunter.io/developer/854725531) |

## What reviewers say

### CRDB OTP

[App page](https://appshunter.io/ios/app/crdb-otp/id1412704941)

This app provides a secure, time-based one-time password solution for mobile devices. It enhances authentication for banking transactions, ensuring strong security for users.

**Highlights:** Strong authentication solution, Time synchronous one-time passwords, Mobile device compatibility, Free to use, Enhanced security for transactions

**Features:** macOS Compatibility

**In-app purchases:** none


### Metro Bank Authenticator

[App page](https://appshunter.io/ios/app/metro-bank-authenticator/id1524446800)

This app provides a secure and convenient way for Metro Bank Business customers to authenticate online banking actions. It replaces the need for a physical security device, allowing for quick verification of logins, payments, and account changes directly from your mobile.

**Highlights:** Authenticate online banking actions, Secure login verification, Approve new payment setups, Confirm account changes, Replaces physical security devices, Convenient mobile authentication

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

**In-app purchases:** none


## Frequently asked questions

### Is CRDB OTP free?

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

### Is Metro Bank Authenticator free?

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

### Do CRDB OTP or Metro Bank Authenticator have ads?

Neither CRDB OTP nor Metro Bank Authenticator shows ads.

### Which is updated more often, CRDB OTP or Metro Bank Authenticator?

CRDB OTP ships an update every 12 months, and Metro Bank Authenticator every 12 months. Most recently, CRDB OTP was updated on November 4, 2026 and Metro Bank Authenticator on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*