# BulkSMS.App vs Auth Sync

The clearest difference is device support: Auth Sync at 3 against BulkSMS.App's —. BulkSMS.App's advantage is iOS requirement (13.0 vs 15.1). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | BulkSMS.App | Auth Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 3 months |
| Size | 15 MB | 59 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ayman ABUOWDA](https://appshunter.io/developer/1239764677) | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) |

## What reviewers say

### BulkSMS.App

[App page](https://appshunter.io/ios/app/bulksmsapp/id1239764678)

**In-app purchases:** none


### 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 BulkSMS.App free?

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

### Is Auth Sync free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*