# Bondlayer Staging vs mos.viewer

The clearest difference is update cadence: mos.viewer at every 4 months against Bondlayer Staging's every 27 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.

Bondlayer Staging ships an update every 27 months, mos.viewer every 4 months. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Bondlayer Staging | mos.viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 4 months** |
| Size | 9 MB | 23 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Loba](https://appshunter.io/developer/936875622) | [Fabrik 19 AG](https://appshunter.io/developer/501964744) |

## What reviewers say

### Bondlayer Staging

[App page](https://appshunter.io/ios/app/bondlayer-staging/id1520421864)

**Features:** macOS Compatibility

**In-app purchases:** none


### mos.viewer

[App page](https://appshunter.io/ios/app/mosviewer/id6470921065)

**In-app purchases:** none


## Frequently asked questions

### Is Bondlayer Staging free?

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

### Is mos.viewer free?

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

### Do Bondlayer Staging or mos.viewer have ads?

Neither Bondlayer Staging nor mos.viewer shows ads.

### Which is updated more often, Bondlayer Staging or mos.viewer?

Bondlayer Staging ships an update every 27 months, and mos.viewer every 4 months. Most recently, Bondlayer Staging was updated on September 17, 2026 and mos.viewer on September 11, 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.*