# BigYellowBus vs Authenticator App ∞

The clearest difference is in-app purchases: BigYellowBus at none against Authenticator App ∞'s 6. BigYellowBus also leads on iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Authenticator App ∞ sells 6 in-app purchases, starting at $9.99 per 7 days. BigYellowBus asks for nothing beyond the download.

BigYellowBus ships an update every 3 months, Authenticator App ∞ every 2 months. The most recent releases landed on June 11, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | BigYellowBus | Authenticator App ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (331 ratings)](https://appshunter.io/ios/app/authenticator-app/id6742086933/reviews)** |
| Number of ratings | — | **331** |
| Positive reviews | — | 22.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 18 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Touchworld Technology](https://appshunter.io/developer/1441953087) | [Rushdata Limited](https://appshunter.io/developer/1861404410) |

## What reviewers say

### BigYellowBus

[App page](https://appshunter.io/ios/app/bigyellowbus/id1642865230)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator App ∞

[App page](https://appshunter.io/ios/app/authenticator-app/id6742086933)

This app provides robust security for your online accounts by generating secure two-factor authentication (2FA) codes. It also offers features like risky link detection, private file storage, and seamless device synchronization for comprehensive data protection.

**Highlights:** Secure 2FA code generation, Encrypted code storage, QR code scanning and generation, Risky link detection, Private file and notes storage, Seamless device synchronization, Offline 2FA code generation

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Weekly Plan | $9.99 | per 7 days |
| Authenticator Monthly Plan | $14.99 | per month |
| Authenticator Yearly Plan | $29.99 | per year |
| Authenticator Yearly PRO | $49.99 | per year |
| Authenticator Yearly Plan | $49.99 | per year |
| Authenticator Lifetime PRO | $49.99 | one-time |

**What reviewers complain about**

- 💸 Forcing to buy an app to authenticate an account
- 💸 Charged $49.99 for subscription
- 🚫 Scam app
- 🚫 Does not work as expected
- 🚫 Misleading app, not the Microsoft Authenticator

**Reported bugs**

- App does not work with work account
- Repeatedly charged for the app without delivering


## Frequently asked questions

### Is BigYellowBus free?

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

### Is Authenticator App ∞ free?

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

### Do BigYellowBus or Authenticator App ∞ have ads?

Neither BigYellowBus nor Authenticator App ∞ shows ads.

### Which is updated more often, BigYellowBus or Authenticator App ∞?

BigYellowBus ships an update every 3 months, and Authenticator App ∞ every 2 months. Most recently, BigYellowBus was updated on June 11, 2026 and Authenticator App ∞ on September 21, 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.*