# Backup Disk vs PMS电子流

The clearest difference is in-app purchases: PMS电子流 at none against Backup Disk's 3. PMS电子流 also leads on iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Backup Disk sells 3 in-app purchases, starting at $2.99 per month. PMS电子流 asks for nothing beyond the download.

## The numbers

| Metric | Backup Disk | PMS电子流 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Size | 4 MB | 32 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Muharrem Ozkan](https://appshunter.io/developer/443806426) | [Shenzhen Atess Power Technology Co.,Ltd](https://appshunter.io/developer/1669387102) |

## What reviewers say

### Backup Disk

[App page](https://appshunter.io/ios/app/backup-disk/id6444174393)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backup Disk PRO Monthly | $2.99 | per month |
| Backup Disk PRO Annual | $9.99 | per year |
| Backup Disk PRO Lifetime | $19.99 | one-time |


### PMS电子流

[App page](https://appshunter.io/ios/app/pms/id6667098380)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Backup Disk free?

Backup Disk is free to download, with in-app purchases available.

### Is PMS电子流 free?

PMS电子流 is free to download, with no in-app purchases.

### Do Backup Disk or PMS电子流 have ads?

Neither Backup Disk nor PMS电子流 shows ads.

---

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