# TwinKey vs Auth Sync

The clearest difference is in-app purchases: Auth Sync at none against TwinKey's 6. TwinKey's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TwinKey sells 6 one-off in-app purchases. Auth Sync asks for nothing beyond the download.

TwinKey ships an update every 6 weeks, Auth Sync every 3 months. The most recent releases landed on September 22, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | TwinKey | Auth Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/twinkey-two-factor-security/id6450484235/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 59 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Artem Bolotov](https://appshunter.io/developer/901756576) | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) |

## What reviewers say

### TwinKey

[App page](https://appshunter.io/ios/app/twinkey-two-factor-security/id6450484235)

This app securely stores and manages your authentication codes for two-factor authentication. It offers easy setup through QR code scanning or manual entry, with options to migrate from other authenticator apps and perform backups. The interface is designed for simplicity and efficiency.

**Highlights:** Secure data storage in Keychain, Easy account setup via QR code or manual entry, Migration from Google Authenticator, Full or partial backup and restore, Simple, efficient user interface

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer — Small | $0.99 | one-time |
| Support the Developer — Medium | $0.99 | one-time |
| Support the Developer — Light | $0.99 | one-time |
| Support the Developer | $5.99 | one-time |
| Support the Developer — Large | $9.99 | one-time |
| Support the Developer — Extra | $59.99 | one-time |


### 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 TwinKey free?

TwinKey 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 TwinKey or Auth Sync have ads?

Neither TwinKey nor Auth Sync shows ads.

### Which is updated more often, TwinKey or Auth Sync?

TwinKey ships an update every 6 weeks, and Auth Sync every 3 months. Most recently, TwinKey was updated on September 22, 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.*