# Order Flow Master vs Klack Sort

The clearest difference is in-app purchases: Order Flow Master at none against Klack Sort's 1. Order Flow Master also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Klack Sort sells 1 one-off in-app purchase. Order Flow Master asks for nothing beyond the download.

Order Flow Master ships an update every 10 days, Klack Sort every 6 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Order Flow Master | Klack Sort |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 6 days** |
| Size | 102 MB | 47 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [STARREALM INTERACTIVE LIMITED](https://appshunter.io/developer/1826686201) | [Zico Bakker](https://appshunter.io/developer/1801191299) |

## What reviewers say

### Order Flow Master

[App page](https://appshunter.io/ios/app/order-flow-master/id6748628720)

**Features:** macOS Compatibility

**In-app purchases:** none


### Klack Sort

[App page](https://appshunter.io/ios/app/klack-sort-color-puzzle/id6786612509)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Frequently asked questions

### Is Order Flow Master free?

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

### Is Klack Sort free?

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

### Do Order Flow Master or Klack Sort have ads?

Both Order Flow Master and Klack Sort show ads.

### Which is updated more often, Order Flow Master or Klack Sort?

Order Flow Master ships an update every 10 days, and Klack Sort every 6 days. Most recently, Order Flow Master was updated on October 28, 2026 and Klack Sort on October 31, 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.*