# PrivyMermaid vs CodePad!

The clearest difference is in-app purchases: CodePad! at none against PrivyMermaid's 2. PrivyMermaid's advantage is update cadence (every 2 weeks vs every 4 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PrivyMermaid sells 2 one-off in-app purchases. CodePad! asks for nothing beyond the download.

PrivyMermaid ships an update every 2 weeks, CodePad! every 4 weeks. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | PrivyMermaid | CodePad! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Free | — |
| Size | 39 MB | 6 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GUOYU WANG](https://appshunter.io/developer/1873302677) | [JIN SIK CHOI](https://appshunter.io/developer/6792992919) |

## What reviewers say

### PrivyMermaid

[App page](https://appshunter.io/ios/app/privymermaid-ai-diagram/id6758518978)

This privacy-focused editor allows developers and technical writers to create, edit, and preview diagrams completely offline. Your sensitive data remains on your device, ensuring maximum security and control over your diagrams.

**Highlights:** 100% Private & Offline diagram editing, Instant offline diagram rendering, No cloud sync for enhanced data privacy, Live preview of diagram changes, Multiple theme selections, Full Mermaid syntax support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PrivyMermaid Pro | $4.99 | one-time |
| PrivyMermaid Pro | $9.99 | one-time |


### CodePad!

[App page](https://appshunter.io/ios/app/codepad/id6792992917)

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

**In-app purchases:** none


## Frequently asked questions

### Is PrivyMermaid free?

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

### Is CodePad! free?

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

### Do PrivyMermaid or CodePad! have ads?

Neither PrivyMermaid nor CodePad! shows ads.

### Which is updated more often, PrivyMermaid or CodePad!?

PrivyMermaid ships an update every 2 weeks, and CodePad! every 4 weeks. Most recently, PrivyMermaid was updated on October 26, 2026 and CodePad! on October 29, 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.*