# Merkdown vs DiagramFlow Studio

The clearest difference is in-app purchases: Merkdown at none against DiagramFlow Studio's 1. DiagramFlow Studio's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. DiagramFlow Studio sells 1 one-off in-app purchase. Merkdown asks for nothing beyond the download.

Merkdown ships an update every 3 months, DiagramFlow Studio every 5 weeks. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Merkdown | DiagramFlow Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 33 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [HYUNWOO LEE](https://appshunter.io/developer/1592216709) | [Yu Shiung Jiang](https://appshunter.io/developer/612234939) |

## What reviewers say

### Merkdown

[App page](https://appshunter.io/ios/app/merkdown/id6760243765)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Merkdown free?

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

### Is DiagramFlow Studio free?

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

### Do Merkdown or DiagramFlow Studio have ads?

Merkdown shows ads; DiagramFlow Studio does not.

### Which is updated more often, Merkdown or DiagramFlow Studio?

Merkdown ships an update every 3 months, and DiagramFlow Studio every 5 weeks. Most recently, Merkdown was updated on October 17, 2026 and DiagramFlow Studio on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*