# mos.viewer vs Vultry

The clearest difference is in-app purchases: mos.viewer at none against Vultry's 2. Vultry's advantage is update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Vultry sells 2 in-app purchases, starting at $1.99 per month. mos.viewer asks for nothing beyond the download.

mos.viewer ships an update every 4 months, Vultry fortnightly. The most recent releases landed on September 11, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | mos.viewer | Vultry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 23 MB | 28 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fabrik 19 AG](https://appshunter.io/developer/501964744) | [Kristof Kowalski](https://appshunter.io/developer/306599174) |

## What reviewers say

### mos.viewer

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

**In-app purchases:** none


### Vultry

[App page](https://appshunter.io/ios/app/vultry/id6764737999)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vultry Pro Monthly | $1.99 | per month |
| Vultry Pro Yearly | $9.99 | per year |


## Frequently asked questions

### Is mos.viewer free?

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

### Is Vultry free?

Vultry is free to download, with in-app purchases available.

### Do mos.viewer or Vultry have ads?

Neither mos.viewer nor Vultry shows ads.

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

mos.viewer ships an update every 4 months, and Vultry fortnightly. Most recently, mos.viewer was updated on September 11, 2026 and Vultry on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*