Comparison

One Markdown vs HaruSync

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

HaruSync

Features
Read full description

Big goals begin with a small step today. HaruSync is a daily planner that brings your goals, calendar, to-do list, journal and notes together. Plan your studies, work and personal life, take action, then look back on what you did. Know what to do today • See today’s and tomorrow’s events, tasks and goal progress on your dashboard • Organize events in a calendar with recurring schedules and reminders • Give tasks a planned date and a separate due date • Set priorities, track status and arrange today’s tasks in your preferred order Connect goals to action • Plan daily, weekly, monthly, quarterly and yearly goals • Link events and tasks to a goal and follow your progress • Focus on one task with a stopwatch, timer or Pomodoro session Keep the story behind your plans • Write journal entries with moods and up to five photos • Create several notes on the same day and attach images or files • Find records again with search, filters and favorites • Keep important dates close with countdowns and day counters Plan together, check at a glance • Invite friends to share a planner • View your selected planner with home-screen widgets • Use layouts for phones and tablets, light and dark modes, and 13 languages • Use HaruSync in your browser with the web version. ----- One basic planner is free. Additional planners are unlocked with purchased Credits. Sharing and active-goal limits depend on your subscription; full reports require Basic or above. Check the app for purchase prices and terms. ----- • Terms of Service: https://harusync.pearrolls.com/legal/terms-of-service • Privacy Policy: https://harusync.pearrolls.com/legal/privacy-policy

Screenshots

One Markdown4 screens
HaruSync4 screens

Verdict

The call

The clearest difference is update cadence: HaruSync at weekly against One Markdown's monthly. On price, ads, in-app purchases and device support 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 HaruSync 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, HaruSync weekly. Both last shipped on October 21, 2026.

Scorecard1 real difference · 9 level
One Markdown versus HaruSync: the parameters behind the verdict, then further details
ParameterOne MarkdownHaruSync
PriceFreeFree
Rating4.6 (149 ratings) — better—
Positive reviews81.9% of reviews—
Number of ratings149 — better—
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS14.5 — better15.6
Further details — not scored
Size50 MB154 MB
Age rating4+4+
Developer禄海 区Pearrolls

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

HaruSync

Subscriptions2
  • Basic Monthly$2.991 Month
  • Basic Yearly$29.991 Year
One-time1
  • Purchase credit$0.99

Questions

Is One Markdown free?
One Markdown is free to download, with in-app purchases available.
Is HaruSync free?
HaruSync is free to download, with in-app purchases available.
Do One Markdown or HaruSync have ads?
Neither One Markdown nor HaruSync shows ads.
Which is updated more often, One Markdown or HaruSync?
One Markdown ships an update monthly, and HaruSync weekly. Most recently, One Markdown was updated on October 21, 2026 and HaruSync on October 21, 2026.

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