# microAI vs MermaidSketch

The clearest difference is in-app purchases: MermaidSketch at none against microAI's 4. MermaidSketch also leads on update cadence (daily vs every 9 days) and iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. microAI sells 4 in-app purchases, starting at $0.99 per month. MermaidSketch asks for nothing beyond the download.

microAI ships an update every 9 days, MermaidSketch daily. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | microAI | MermaidSketch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/microai/id6744488702/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 234 MB | 33 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod** |
| Age rating | 9+ | 17+ |
| Developer | [genghong Xie](https://appshunter.io/developer/1785558382) | [duy trinh](https://appshunter.io/developer/1896492647) |

## What reviewers say

### microAI

[App page](https://appshunter.io/ios/app/microai/id6744488702)

This app provides a private, local AI workspace that organizes your thoughts, projects, and files. It allows you to run AI chat on your device, manage AI models, and build a personal memory system for enhanced productivity and offline use.

**Highlights:** Private Memory Map, Local AI Chat, Long-Term Memory, Projects With Context, Chat With Local Files, Private Journal, GGUF Model Management

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| microAI Pro – Monthly | $0.99 | per month |
| microAI Pro – Yearly | $5.99 | per year |
| Remove Ads | $4.99 | one-time |
| microAI Pro – Lifetime | $9.99 | one-time |


### MermaidSketch

[App page](https://appshunter.io/ios/app/mermaidsketch/id6767610254)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is microAI free?

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

### Is MermaidSketch free?

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

### Do microAI or MermaidSketch have ads?

Neither microAI nor MermaidSketch shows ads.

### Which is updated more often, microAI or MermaidSketch?

microAI ships an update every 9 days, and MermaidSketch daily. Most recently, microAI was updated on October 7, 2026 and MermaidSketch on October 25, 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.*