# One Markdown vs Arkheon AI

The clearest difference is ads: One Markdown at none against Arkheon AI's shown. One Markdown also leads on device support (4 vs 1) and iOS requirement (14.5 vs 17.0). Arkheon AI's advantage is update cadence (daily vs monthly). On price and in-app purchases there is nothing between them.

Both are free to download. One Markdown sells 3 in-app purchases, starting at $3.99 per year and Arkheon AI sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

One Markdown ships an update monthly, Arkheon AI daily. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | One Markdown | Arkheon AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (141 ratings)](https://appshunter.io/ios/app/one-markdown/id1507139439/reviews)** | — |
| Number of ratings | **141** | — |
| Positive reviews | 81.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 15 MB |
| Requires iOS | **14.5** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [禄海 区](https://appshunter.io/developer/954188947) | [Pavel Plotnikov](https://appshunter.io/developer/1879777091) |

## What reviewers say

### One Markdown

[App page](https://appshunter.io/ios/app/one-markdown/id1507139439)

A fast and simple editor for plain text, Markdown, and Textbundle formats. It offers full Markdown display, image previews, math formula rendering, and extensive customization options for themes and fonts. Includes tools for syntax input, table generation, and document outlining.

**Highlights:** Supports CommonMark and GitHub Flavored Markdown, Full Markdown document display, Image and math formula previews, Customizable themes and fonts, Markdown syntax input menu and keyboard, Outline and word count view, Editor & Preview mode

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Markdown Yearly Subscribe | $3.99 | per year |
| One Markdown for Mac | $9.99 | one-time |
| One Markdown for  iPhone/iPad | $9.99 | one-time |


### Arkheon AI

[App page](https://appshunter.io/ios/app/arkheon-ai/id6809068148)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack S — 150 credits | $2.99 | one-time |
| Pack M — 450 credits | $6.99 | one-time |
| Pack L — 1000 credits | $12.99 | one-time |


## Frequently asked questions

### Is One Markdown free?

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

### Is Arkheon AI free?

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

### Do One Markdown or Arkheon AI have ads?

Arkheon AI shows ads; One Markdown does not.

### Which is updated more often, One Markdown or Arkheon AI?

One Markdown ships an update monthly, and Arkheon AI daily. Most recently, One Markdown was updated on October 13, 2026 and Arkheon AI on October 6, 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.*