# mos.viewer vs hexJapality

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

Both are free to download. hexJapality 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, hexJapality every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | mos.viewer | hexJapality |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 23 MB | 44 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fabrik 19 AG](https://appshunter.io/developer/501964744) | [Japality Limited](https://appshunter.io/developer/1574046707) |

## What reviewers say

### mos.viewer

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

**In-app purchases:** none


### hexJapality

[App page](https://appshunter.io/ios/app/hexjapality/id6763886006)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $1.99 | per month |
| Remove Ads (Yearly) | $9.99 | per year |


## Frequently asked questions

### Is mos.viewer free?

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

### Is hexJapality free?

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

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

hexJapality shows ads; mos.viewer does not.

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

mos.viewer ships an update every 4 months, and hexJapality every 2 months. Most recently, mos.viewer was updated on November 3, 2026 and hexJapality on October 31, 2026.

---

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