# Peco Douwes vs FabCalc

The clearest difference is in-app purchases: Peco Douwes at none against FabCalc's 4. Peco Douwes also leads on iOS requirement (13.0 vs 16.0). FabCalc's advantage is update cadence (weekly vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. FabCalc sells 4 in-app purchases, starting at $4.99 per month. Peco Douwes asks for nothing beyond the download.

Peco Douwes ships an update every 6 weeks, FabCalc weekly. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Peco Douwes | FabCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 15 MB | 3 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lizard Apps BV](https://appshunter.io/developer/813507312) | [Double Vision USA LLC](https://appshunter.io/developer/1894678139) |

## What reviewers say

### Peco Douwes

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

**Features:** macOS Compatibility

**In-app purchases:** none


### FabCalc

[App page](https://appshunter.io/ios/app/fabcalc-flat-pattern-dxf/id6781708798)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FabCalc Pro Monthly | $4.99 | per month |
| FabCalc Pro Yearly | $29.99 | per year |
| Fab Shop Bundle | $119.99 | one-time |
| ShopCalc Pro Lifetime | $129.99 | one-time |


## Frequently asked questions

### Is Peco Douwes free?

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

### Is FabCalc free?

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

### Do Peco Douwes or FabCalc have ads?

Neither Peco Douwes nor FabCalc shows ads.

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

Peco Douwes ships an update every 6 weeks, and FabCalc weekly. Most recently, Peco Douwes was updated on October 18, 2026 and FabCalc on October 5, 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.*