# One Markdown vs Inbox Zero

The clearest difference is ads: One Markdown at none against Inbox Zero's shown. One Markdown also leads on device support (4 vs 2) and iOS requirement (14.5 vs 17.0). On price, update cadence 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 Inbox Zero sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

One Markdown ships an update monthly, Inbox Zero every 2 months. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | One Markdown | Inbox Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (149 ratings)](https://appshunter.io/ios/app/one-markdown/id1507139439/reviews)** | — |
| Number of ratings | **149** | — |
| Positive reviews | 81.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 30 MB |
| Requires iOS | **14.5** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [禄海 区](https://appshunter.io/developer/954188947) | [Tabish Hassan](https://appshunter.io/developer/1885918100) |

## 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 |


### Inbox Zero

[App page](https://appshunter.io/ios/app/inbox-zero-email-sorter/id6763883599)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InboxZero Premium | $2.99 | per month |
| InboxZero Premium Yearly | $29.99 | per year |
| Premium Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is One Markdown free?

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

### Is Inbox Zero free?

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

### Do One Markdown or Inbox Zero have ads?

Inbox Zero shows ads; One Markdown does not.

### Which is updated more often, One Markdown or Inbox Zero?

One Markdown ships an update monthly, and Inbox Zero every 2 months. Most recently, One Markdown was updated on October 21, 2026 and Inbox Zero on October 9, 2026.

---

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