# 4 Quadrant Rule vs Structured Flow

The clearest difference is price: Structured Flow at Free against 4 Quadrant Rule's $1.99. 4 Quadrant Rule's advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Structured Flow is free to download; 4 Quadrant Rule costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 4 Quadrant Rule | Structured Flow |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 24 MB | 56 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) | [Jorge Alves](https://appshunter.io/developer/1838093137) |

## What reviewers say

### 4 Quadrant Rule

[App page](https://appshunter.io/ios/app/4-quadrant-rule-task-planner/id6786556931)

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

**In-app purchases:** none


### Structured Flow

[App page](https://appshunter.io/ios/app/structured-flow/id6789644116)

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

**In-app purchases:** none


## Frequently asked questions

### Is 4 Quadrant Rule free?

4 Quadrant Rule costs $1.99, with no in-app purchases.

### Is Structured Flow free?

Structured Flow is free to download, with no in-app purchases.

### Do 4 Quadrant Rule or Structured Flow have ads?

Neither 4 Quadrant Rule nor Structured Flow shows ads.

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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.*