# CEMS@FEO vs ServiceKey Nucleus

The clearest difference is update cadence: ServiceKey Nucleus at monthly against CEMS@FEO's every 18 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.

CEMS@FEO ships an update every 18 months, ServiceKey Nucleus monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | CEMS@FEO | ServiceKey Nucleus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Monthly** |
| Size | 40 MB | 39 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Far East Organization](https://appshunter.io/developer/762154117) | [NTT DATA](https://appshunter.io/developer/1236266706) |

## What reviewers say

### CEMS@FEO

[App page](https://appshunter.io/ios/app/cemsfeo/id1519288507)

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

**In-app purchases:** none


### ServiceKey Nucleus

[App page](https://appshunter.io/ios/app/servicekey-nucleus/id1519423338)

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

**In-app purchases:** none


## Frequently asked questions

### Is CEMS@FEO free?

CEMS@FEO is free to download, with no in-app purchases.

### Is ServiceKey Nucleus free?

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

### Do CEMS@FEO or ServiceKey Nucleus have ads?

Neither CEMS@FEO nor ServiceKey Nucleus shows ads.

### Which is updated more often, CEMS@FEO or ServiceKey Nucleus?

CEMS@FEO ships an update every 18 months, and ServiceKey Nucleus monthly. Most recently, CEMS@FEO was updated on November 3, 2026 and ServiceKey Nucleus on November 3, 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.*