# SOS Online Backup vs EMP

The clearest difference is update cadence: EMP at every 2 months against SOS Online Backup's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

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

SOS Online Backup ships an update every 8 months, EMP every 2 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | SOS Online Backup | EMP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 10 MB | 90 MB |
| Requires iOS | 12.3 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Infrascale, Inc.](https://appshunter.io/developer/328057516) | [林 邓](https://appshunter.io/developer/1825517381) |

## What reviewers say

### SOS Online Backup

[App page](https://appshunter.io/ios/app/sos-online-backup/id328057513)

Securely back up and restore data from your mobile devices, laptops, and remote offices to the cloud. Protect your information against accidental deletion, device loss, or cyberattacks. Access and manage your backed-up files from any device.

**Highlights:** Direct-to-cloud backup, Data recovery, Cross-device access, Protection against data loss, Mobile, laptop, and office support

**Features:** macOS Compatibility

**In-app purchases:** none


### EMP

[App page](https://appshunter.io/ios/app/emp-cloud/id6748625196)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SOS Online Backup free?

SOS Online Backup is free to download, with no in-app purchases.

### Is EMP free?

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

### Do SOS Online Backup or EMP have ads?

Neither SOS Online Backup nor EMP shows ads.

### Which is updated more often, SOS Online Backup or EMP?

SOS Online Backup ships an update every 8 months, and EMP every 2 months. Most recently, SOS Online Backup was updated on October 6, 2026 and EMP on October 9, 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.*