# DiagramFlow Studio vs K37 Simple Flows

DiagramFlow Studio and K37 Simple Flows are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. DiagramFlow Studio sells 1 one-off in-app purchase and K37 Simple Flows sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DiagramFlow Studio | K37 Simple Flows |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yu Shiung Jiang](https://appshunter.io/developer/612234939) | [K37 Software LLC](https://appshunter.io/developer/1886297629) |

## What reviewers say

### DiagramFlow Studio

[App page](https://appshunter.io/ios/app/diagramflow-studio/id6780979641)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 圖流 DiagramFlow Studio Pro 解鎖 | $2.99 | one-time |


### K37 Simple Flows

[App page](https://appshunter.io/ios/app/k37-simple-flows/id6800538438)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Flows Full Unlock | $2.99 | one-time |


## Frequently asked questions

### Is DiagramFlow Studio free?

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

### Is K37 Simple Flows free?

K37 Simple Flows is free to download, with in-app purchases available.

### Do DiagramFlow Studio or K37 Simple Flows have ads?

Neither DiagramFlow Studio nor K37 Simple Flows 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.*