# CBM FMS vs EverSafe OS

The clearest difference is update cadence: CBM FMS at every 2 months against EverSafe OS's every 4 months. CBM FMS also leads on iOS requirement (11.0 vs 13.4). 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.

CBM FMS ships an update every 2 months, EverSafe OS every 4 months. The most recent releases landed on May 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | CBM FMS | EverSafe OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 38 MB | 36 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IBASE Technology Pte Ltd](https://appshunter.io/developer/387147768) | [ARAMARK Corporation](https://appshunter.io/developer/541912853) |

## What reviewers say

### CBM FMS

[App page](https://appshunter.io/ios/app/cbm-fms/id1222540329)

**Features:** macOS Compatibility

**In-app purchases:** none


### EverSafe OS

[App page](https://appshunter.io/ios/app/eversafe-os/id1516953805)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CBM FMS free?

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

### Is EverSafe OS free?

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

### Do CBM FMS or EverSafe OS have ads?

Neither CBM FMS nor EverSafe OS shows ads.

### Which is updated more often, CBM FMS or EverSafe OS?

CBM FMS ships an update every 2 months, and EverSafe OS every 4 months. Most recently, CBM FMS was updated on May 16, 2026 and EverSafe OS on September 14, 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.*