# Renkforce SmartStorage vs Backup Disk

The clearest difference is in-app purchases: Renkforce SmartStorage at none against Backup Disk's 3. Renkforce SmartStorage also leads on update cadence (every 4 weeks vs every 9 months) and iOS requirement (8.0 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. Renkforce SmartStorage asks for nothing beyond the download.

Renkforce SmartStorage ships an update every 4 weeks, Backup Disk every 9 months. The most recent releases landed on October 5, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Renkforce SmartStorage | Backup Disk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/renkforce-smartstorage/id1300090848/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 83 MB | 4 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [CEI Conrad Electronic International (HK) Limited](https://appshunter.io/developer/756357900) | [Muharrem Ozkan](https://appshunter.io/developer/443806426) |

## What reviewers say

### Renkforce SmartStorage

[App page](https://appshunter.io/ios/app/renkforce-smartstorage/id1300090848)

Easily exchange files between devices and platforms. Back up contacts, camera roll, and calendar to dedicated hardware, maintaining control over your data. Supports a wide range of document, image, audio, and video file formats.

**Highlights:** Cross-device file exchange, Contact backup, Camera roll backup, Calendar backup, Support for numerous file formats, Data control

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Renkforce SmartStorage free?

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

### Is Backup Disk free?

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

### Do Renkforce SmartStorage or Backup Disk have ads?

Neither Renkforce SmartStorage nor Backup Disk shows ads.

### Which is updated more often, Renkforce SmartStorage or Backup Disk?

Renkforce SmartStorage ships an update every 4 weeks, and Backup Disk every 9 months. Most recently, Renkforce SmartStorage was updated on October 5, 2026 and Backup Disk on October 20, 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.*