# Peco Douwes vs RigMaster

The clearest difference is in-app purchases: Peco Douwes at none against RigMaster's 3. Peco Douwes also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). RigMaster's advantage is update cadence (every 10 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. RigMaster sells 3 in-app purchases, starting at $4.99 per 7 days. Peco Douwes asks for nothing beyond the download.

Peco Douwes ships an update every 6 weeks, RigMaster every 10 days. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Peco Douwes | RigMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Size | 15 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lizard Apps BV](https://appshunter.io/developer/813507312) | [Grima Hdez](https://appshunter.io/developer/1741481582) |

## What reviewers say

### Peco Douwes

[App page](https://appshunter.io/ios/app/peco-douwes/id6447574734)

**Features:** macOS Compatibility

**In-app purchases:** none


### RigMaster

[App page](https://appshunter.io/ios/app/rigmaster-rigging-calculator/id6789944360)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |
| RigMaster Pro | $39.99 | one-time |


## Frequently asked questions

### Is Peco Douwes free?

Peco Douwes is free to download, with no in-app purchases.

### Is RigMaster free?

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

### Do Peco Douwes or RigMaster have ads?

RigMaster shows ads; Peco Douwes does not.

### Which is updated more often, Peco Douwes or RigMaster?

Peco Douwes ships an update every 6 weeks, and RigMaster every 10 days. Most recently, Peco Douwes was updated on October 18, 2026 and RigMaster on October 7, 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.*