# Two factor authenticator vs Auth Sync

The clearest difference is in-app purchases: Auth Sync at none against Two factor authenticator's 3. Auth Sync also leads on ads (none vs shown). Two factor authenticator's advantage is update cadence (monthly vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Two factor authenticator sells 3 in-app purchases, starting at $1.99 per 7 days. Auth Sync asks for nothing beyond the download.

Two factor authenticator ships an update monthly, Auth Sync every 3 months. The most recent releases landed on September 23, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Two factor authenticator | Auth Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Size | 45 MB | 59 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [nguyen thanh](https://appshunter.io/developer/1481436893) | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) |

## What reviewers say

### Two factor authenticator

[App page](https://appshunter.io/ios/app/two-factor-authenticator/id6742745017)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week Premium | $1.99 | per 7 days |
| One Month Premium | $4.99 | per month |
| 1 Year Premium | $19.99 | per year |


### Auth Sync

[App page](https://appshunter.io/ios/app/auth-sync-safe-and-secure-2fa/id6751329938)

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

**In-app purchases:** none


## Frequently asked questions

### Is Two factor authenticator free?

Two factor authenticator is free to download, with in-app purchases available.

### Is Auth Sync free?

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

### Do Two factor authenticator or Auth Sync have ads?

Two factor authenticator shows ads; Auth Sync does not.

### Which is updated more often, Two factor authenticator or Auth Sync?

Two factor authenticator ships an update monthly, and Auth Sync every 3 months. Most recently, Two factor authenticator was updated on September 23, 2026 and Auth Sync on August 22, 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.*