# Markdown Mermaid vs BDUI Go

The clearest difference is update cadence: BDUI Go at weekly against Markdown Mermaid's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Markdown Mermaid ships an update every 3 months, BDUI Go weekly. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Markdown Mermaid | BDUI Go |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 44 MB | 61 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mark Duenas](https://appshunter.io/developer/1083533055) | [Yuriy Zhelannov](https://appshunter.io/developer/6796796590) |

## What reviewers say

### Markdown Mermaid

[App page](https://appshunter.io/ios/app/markdown-mermaid/id6757712908)

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

**In-app purchases:** none


### BDUI Go

[App page](https://appshunter.io/ios/app/bdui-go/id6796796588)

**In-app purchases:** none


## Frequently asked questions

### Is Markdown Mermaid free?

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

### Is BDUI Go free?

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

### Do Markdown Mermaid or BDUI Go have ads?

Neither Markdown Mermaid nor BDUI Go shows ads.

### Which is updated more often, Markdown Mermaid or BDUI Go?

Markdown Mermaid ships an update every 3 months, and BDUI Go weekly. Most recently, Markdown Mermaid was updated on October 17, 2026 and BDUI Go on October 24, 2026.

---

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