# Izoler Pro vs FabCalc

The clearest difference is price: FabCalc at Free against Izoler Pro's $33.99. FabCalc also leads on update cadence (weekly vs every 5 weeks). Izoler Pro's advantage is in-app purchases (none vs 4) and iOS requirement (8.0 vs 16.0). On ads and device support there is nothing between them.

FabCalc is free to download; Izoler Pro costs $33.99 up front. FabCalc sells 4 in-app purchases, starting at $4.99 per month. Izoler Pro asks for nothing beyond the download.

Izoler Pro ships an update every 5 weeks, FabCalc weekly. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Izoler Pro | FabCalc |
| --- | --- | --- |
| Price | $33.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 24 MB | 3 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Rafal Grobelny](https://appshunter.io/developer/1023229430) | [Double Vision USA LLC](https://appshunter.io/developer/1894678139) |

## What reviewers say

### Izoler Pro

[App page](https://appshunter.io/ios/app/izoler-pro/id1023485776)

**Features:** Vision Pro support

**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 Izoler Pro free?

Izoler Pro costs $33.99, with no in-app purchases.

### Is FabCalc free?

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

### Do Izoler Pro or FabCalc have ads?

Neither Izoler Pro nor FabCalc shows ads.

### Which is updated more often, Izoler Pro or FabCalc?

Izoler Pro ships an update every 5 weeks, and FabCalc weekly. Most recently, Izoler Pro was updated on September 16, 2026 and FabCalc on September 18, 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.*