# DrawViewer vs K37 Simple Flows

The clearest difference is in-app purchases: DrawViewer at none against K37 Simple Flows's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. K37 Simple Flows sells 1 one-off in-app purchase. DrawViewer asks for nothing beyond the download.

## The numbers

| Metric | DrawViewer | K37 Simple Flows |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 0 MB | 4 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Florian Schwaikl](https://appshunter.io/developer/1890640691) | [K37 Software LLC](https://appshunter.io/developer/1886297629) |

## What reviewers say

### DrawViewer

[App page](https://appshunter.io/ios/app/drawviewer/id6761646654)

**In-app purchases:** none


### 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 DrawViewer free?

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

### Is K37 Simple Flows free?

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

### Do DrawViewer or K37 Simple Flows have ads?

Neither DrawViewer 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.*