# Layout Calc Pro vs FlowLine Isometric

The clearest difference is in-app purchases: FlowLine Isometric at none against Layout Calc Pro's 7. Layout Calc Pro's advantage is update cadence (every 6 days vs every 6 weeks) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Layout Calc Pro sells 7 one-off in-app purchases. FlowLine Isometric asks for nothing beyond the download.

Layout Calc Pro ships an update every 6 days, FlowLine Isometric every 6 weeks. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Layout Calc Pro | FlowLine Isometric |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 6 weeks |
| Size | 49 MB | 23 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [思源 李](https://appshunter.io/developer/1704804704) | [Joshua Parkin](https://appshunter.io/developer/1495725832) |

## What reviewers say

### Layout Calc Pro

[App page](https://appshunter.io/ios/app/layout-calc-pro/id6476074424)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Day VIP | $5.00 | one-time |
| 1-Year VIP Membership | $19.99 | one-time |
| 2-Year VIP Membership | $34.99 | one-time |
| 3-Year VIP Membership | $44.99 | one-time |
| 1-Year VIP Membership | $55.00 | one-time |
| 2-Year VIP Membership | $104.99 | one-time |
| 3-Year VIP Membership | $154.99 | one-time |


### FlowLine Isometric

[App page](https://appshunter.io/ios/app/flowline-isometric/id6762237039)

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

**In-app purchases:** none


## Frequently asked questions

### Is Layout Calc Pro free?

Layout Calc Pro is free to download, with in-app purchases available.

### Is FlowLine Isometric free?

FlowLine Isometric is free to download, with no in-app purchases.

### Do Layout Calc Pro or FlowLine Isometric have ads?

Neither Layout Calc Pro nor FlowLine Isometric shows ads.

### Which is updated more often, Layout Calc Pro or FlowLine Isometric?

Layout Calc Pro ships an update every 6 days, and FlowLine Isometric every 6 weeks. Most recently, Layout Calc Pro was updated on September 17, 2026 and FlowLine Isometric on September 11, 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.*