# 2FA Authenticator (2FAS) vs Expansion Bellow Development

The clearest difference is price: 2FA Authenticator (2FAS) at Free against Expansion Bellow Development's $3.99. 2FA Authenticator (2FAS) also leads on update cadence (monthly vs every 47 months). Expansion Bellow Development's advantage is iOS requirement (16.1 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

2FA Authenticator (2FAS) is free to download; Expansion Bellow Development costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

2FA Authenticator (2FAS) ships an update monthly, Expansion Bellow Development every 47 months. The most recent releases landed on November 12, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 2FA Authenticator (2FAS) | Expansion Bellow Development |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.7 (36K ratings)](https://appshunter.io/ios/app/2fa-authenticator-2fas/id1217793794/reviews)** | — |
| Number of ratings | **36K** | — |
| Positive reviews | 77.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 47 months |
| Monetization | Free | — |
| Size | 81 MB | 1 MB |
| Requires iOS | 18.6 | **16.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Two Factor Authentication Service Inc.](https://appshunter.io/developer/1217793793) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### 2FA Authenticator (2FAS)

[App page](https://appshunter.io/ios/app/2fa-authenticator-2fas/id1217793794)

This app provides an easy and secure way to enable two-factor authentication for your online accounts. It offers features like token restoration, biometric protection, and offline functionality to keep your personal data and passwords safe from cyber threats.

**Highlights:** Two-factor authentication, Token backup and restore, Biometric app protection, Open-source and transparent, Cross-device sync, Offline functionality

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient and fast
- 🔒 Secure and private
- 👍 Simple and intuitive UI
- 💡 Customizable icons and folders
- 🔒 iCloud backup and sync

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔒 Lack of password/PIN protection
- 🕰 No Apple Watch app
- 🐛 Issues with push notifications
- 🕰 Missing desktop/web app

**Reported bugs**

- Tokens disappearing after device changes
- Push notification failures
- Incompatibility with older devices

**Requested features**

- Alphanumeric passcode option
- Custom icon uploads
- Apple Watch app
- Desktop/web app
- Improved support and communication


### Expansion Bellow Development

[App page](https://appshunter.io/ios/app/expansion-bellow-development/id1527383442)

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

**In-app purchases:** none


## Frequently asked questions

### Is 2FA Authenticator (2FAS) free?

2FA Authenticator (2FAS) is free to download, with no in-app purchases.

### Is Expansion Bellow Development free?

Expansion Bellow Development costs $3.99, with no in-app purchases.

### Do 2FA Authenticator (2FAS) or Expansion Bellow Development have ads?

Neither 2FA Authenticator (2FAS) nor Expansion Bellow Development shows ads.

### Which is updated more often, 2FA Authenticator (2FAS) or Expansion Bellow Development?

2FA Authenticator (2FAS) ships an update monthly, and Expansion Bellow Development every 47 months. Most recently, 2FA Authenticator (2FAS) was updated on November 12, 2026 and Expansion Bellow Development on November 3, 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.*