# Sigma Lock

> Generate and manage One-Time Passwords for secure two-factor authentication. (iPhone/iPad app by Croem Inc..)

- Source: https://appshunter.io/ios/app/sigma-lock/id909638699 (this page in markdown: same URL + `.md`)
- Developer: [Croem Inc.](https://appshunter.io/developer/547165584)
- Category: Business, Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 10.0 · 13 MB
- Languages: English, Spanish
- Released: 2014-08-27
- Data updated: 2026-06-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sigma-lock/id909638699/reviews.md

## What is Sigma Lock?

Sigma Lock is an app to manage OTP accounts and get OTP code for third party application authentication. OTP code is a six digit password that is used as a second factor authentication for secured applications.
Six digit OTP Code is generated after every 30 seconds without connecting with internet.

## Key features

- OTP account management
- Generate six-digit OTP codes
- Offline code generation
- Supports third-party authentication
- Codes refresh every 30 seconds


## Frequently asked questions about Sigma Lock

### What is Sigma Lock used for?

Sigma Lock is an app designed to manage your One-Time Password (OTP) accounts and generate the six-digit codes required for second-factor authentication on various third-party applications.

### How does Sigma Lock generate OTP codes?

Sigma Lock generates a new six-digit OTP code every 30 seconds. This process does not require an active internet connection, ensuring you can always access your codes.

### Is Sigma Lock free to use?

Yes, Sigma Lock is available for free. It is listed as a free application with no mention of in-app purchases or subscription fees.

### What devices is Sigma Lock compatible with?

Sigma Lock is compatible with Apple devices, including iPhone, iPad, and iPod. It is suitable for users within the 4+ age rating.

### How often is Sigma Lock updated?

The latest version of Sigma Lock is 1.9, and it was last updated on July 21, 2020. While updates may not be frequent, the app is functional for its core purpose.

### What is the user rating for Sigma Lock?

Sigma Lock has received a perfect rating of 5.0 stars from one review, indicating a highly positive user experience for at least one user.

### Does Sigma Lock have ads?

The provided data does not specify whether Sigma Lock contains advertisements. However, given its free status and lack of in-app purchases, it is possible it may include ads.

### What is the developer of Sigma Lock?

Sigma Lock is developed by Croem Inc. The application was initially released on August 27, 2014.

## Version history (last 1 release)

### 1.9 — 2020-07-21

Minor bug fix.

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## More apps by Croem Inc.

- [CellPago](https://appshunter.io/ios/app/cellpago/id608819017)
- [Mi Wallet Nacional](https://appshunter.io/ios/app/mi-wallet-nacional/id1640804148)

All apps by Croem Inc.: https://appshunter.io/developer/547165584

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-24.*