# Ghostreader AI vs Koham

The clearest difference is update cadence: Koham at every 2 days against Ghostreader AI's every 10 days. Ghostreader AI's advantage is iOS requirement (17.0 vs 27.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Ghostreader AI sells 1 in-app purchase, starting at $6.99 per month and Koham sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Ghostreader AI ships an update every 10 days, Koham every 2 days. The most recent releases landed on September 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Ghostreader AI | Koham |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/koham/id6792972491/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 23 MB |
| Requires iOS | **17.0** | 27.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [lauren brendle](https://appshunter.io/developer/6780510752) | [统伟 陈](https://appshunter.io/developer/1766625276) |

## What reviewers say

### Ghostreader AI

[App page](https://appshunter.io/ios/app/ghostreader-ai/id6780510750)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Avid Reader | $6.99 | per month |


### Koham

[App page](https://appshunter.io/ios/app/koham/id6792972491)

Engage in deep conversations with your books using AI. Import your EPUBs and explore their content through interactive dialogue, fostering self-understanding. The app also features a calm EPUB reader and remembers your discussion history.

**Highlights:** AI-powered book conversations, Import personal EPUB collections, Real-time voice interaction, EPUB reader with customization, Discussion memory and editing, API key configuration for AI

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Koham Supporter | $6.99 | one-time |


## Frequently asked questions

### Is Ghostreader AI free?

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

### Is Koham free?

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

### Do Ghostreader AI or Koham have ads?

Neither Ghostreader AI nor Koham shows ads.

### Which is updated more often, Ghostreader AI or Koham?

Ghostreader AI ships an update every 10 days, and Koham every 2 days. Most recently, Ghostreader AI was updated on September 24, 2026 and Koham on October 8, 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.*