# CharityEngine MobilePay vs SkyOS

The clearest difference is iOS requirement: CharityEngine MobilePay at 8.0 against SkyOS's 15.1. On price, update cadence, ads 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.

CharityEngine MobilePay ships an update every 2 weeks, SkyOS every 3 weeks. Both last shipped on October 18, 2026.

## The numbers

| Metric | CharityEngine MobilePay | SkyOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 52 MB | 40 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BIS Global, Inc.](https://appshunter.io/developer/1035287045) | [ODP Solutions, Inc](https://appshunter.io/developer/1439602319) |

## What reviewers say

### CharityEngine MobilePay

[App page](https://appshunter.io/ios/app/charityengine-mobilepay/id1526683543)

**Features:** macOS Compatibility

**In-app purchases:** none


### SkyOS

[App page](https://appshunter.io/ios/app/skyos/id6760689659)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CharityEngine MobilePay free?

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

### Is SkyOS free?

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

### Do CharityEngine MobilePay or SkyOS have ads?

Neither CharityEngine MobilePay nor SkyOS shows ads.

### Which is updated more often, CharityEngine MobilePay or SkyOS?

CharityEngine MobilePay ships an update every 2 weeks, and SkyOS every 3 weeks. Most recently, CharityEngine MobilePay was updated on October 18, 2026 and SkyOS on October 18, 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.*