# Octolith vs Muster Army Builder

The clearest difference is iOS requirement: Octolith at 15.0 against Muster Army Builder's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Octolith sells 2 in-app purchases, starting at $3.99 per month and Muster Army Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Octolith ships an update every 6 days, Muster Army Builder every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Octolith | Muster Army Builder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Size | 89 MB | 7 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Octocode](https://appshunter.io/developer/1896334577) | [JAMES ROBERT DE RUYTER](https://appshunter.io/developer/6786275348) |

## What reviewers say

### Octolith

[App page](https://appshunter.io/ios/app/octolith/id6766886743)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Octolith Premium Monthly | $3.99 | per month |
| Octolith Premium Yearly | $44.99 | per year |


### Muster Army Builder

[App page](https://appshunter.io/ios/app/muster-army-builder/id6786288983)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Muster Pro | $4.99 | one-time |


## Frequently asked questions

### Is Octolith free?

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

### Is Muster Army Builder free?

Muster Army Builder is free to download, with in-app purchases available.

### Do Octolith or Muster Army Builder have ads?

Neither Octolith nor Muster Army Builder shows ads.

### Which is updated more often, Octolith or Muster Army Builder?

Octolith ships an update every 6 days, and Muster Army Builder every 3 days. Most recently, Octolith was updated on October 24, 2026 and Muster Army Builder on October 24, 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.*