Comparison

One Markdown vs Inbox Zero

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

One Markdown

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
Read full description

One Markdown is a simple and fast editor that supports plain text, Markdown and Textbundle. It has the following features: * Base on CommonMark syntax and GitHub Flavored Markdown (GFM) extended syntax, supporting TOC, tables, code blocks, math formulas, task lists, footnotes, etc. * Display the text of the Markdown document completely without any deletion. * Images can be displayed directly in the Editor, supporting jpg, png, gif, webP, HEIC and etc. * Math formulas, mermaid and Echarts drawings can be previewed in the editor. * You can set your favorite font or multiple fonts for writing. * You can choose from 11 light themes and 21 dark themes, and also support custom themes. * There is a menu to facilitate the input of Markdown syntax, and a special Markdown syntax keyboard is also provided in iOS. * Convenient tools for generating and formatting Markdown table syntax. * You can view the outline and word count of Markdown documents. * Markdown documents can be previewed and support Editor & Preview mode. Terms of Use: https://www.mweb.im/onemarkdown-terms.html Privacy Policy: https://www.mweb.im/onemarkdown-policy.html PS: The lightweight choice is One Markdown. If you need a complete and powerful app, please take a look at MWeb, I hope you like it!

About

Inbox Zero

Features
Read full description

Inbox Zero — Email Sorter is a reply-time tracker for busy professionals. Log incoming emails, set response targets per priority, snooze for follow-up, and watch your Inbox Score climb as you reply on time. WHAT YOU CAN DO: • Track every pending email with priority, age, and missed-target badges • Set per-priority response windows (Urgent / High / Medium / Low) with on-time reminders • Snooze emails into a Follow-Up list grouped Overdue / Today / Later • Build auto-sorting rules that classify new emails by keyword • Watch your weekly Inbox Score with a four-quadrant breakdown • Smart tips appear when your backlog grows or targets are missed • No account, no email sync — your data stays on your device FREE PLAN: • 20 emails tracked per week • 4 starter sorting rules • 7-day statistics history • Core response targets and Follow-Up list INBOX ZERO PREMIUM — $2.99/month: • Unlimited email tracking (no weekly cap) • Unlimited sorting rules • Custom email categories • Full Inbox Score breakdown with per-priority on-time rate • All-time reply-time charts and category trends • CSV export of your full history • Ad-free experience PERFECT FOR: Busy professionals, remote workers, freelancers, customer-success managers, founders, and anyone who needs to reply on time without missing follow-ups. Choose the plan that suits you: monthly, yearly, or a one-time Lifetime purchase that never renews. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your Apple ID subscription settings. The Lifetime option is a single purchase with no renewal. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tabishapps.com/privacy-policy.html

Screenshots

One Markdown4 screens
Inbox Zero4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
One Markdown versus Inbox Zero: the parameters behind the verdict, then further details
ParameterOne MarkdownInbox Zero
PriceFreeFree
Rating4.6 (149 ratings) — better—
Positive reviews81.9% of reviews—
Number of ratings149 — better—
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS14.5 — better17.0
Further details — not scored
Size50 MB30 MB
Age rating4+4+
Developer禄海 区Tabish Hassan

In-app purchases

3 purchases

One Markdown

Subscriptions1
  • One Markdown Yearly Subscribe$3.991 Year
One-time2
  • One Markdown for Mac$9.99
  • One Markdown for iPhone/iPad$9.99
3 purchases

Inbox Zero

Subscriptions2
  • InboxZero Premium$2.991 Month
  • InboxZero Premium Yearly$29.991 Year
One-time1
  • Premium Lifetime$99.99

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.

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