Comparison

One Markdown vs Arkheon AI

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

Arkheon AI

Features
Read full description

Arkheon is one chat for the best AI models: GPT, Claude, Gemini, DeepSeek, Grok, Mistral and dozens more. One balance, pay as you go, no subscription for every model. WHAT IT DOES • Auto mode picks the model for the task: a quick answer, a document, code or an image. • Photos, PDF, Excel, Word and text files right in the chat: the model reads them and answers about the content. • Images from a description, and exact table images from your data. • Before an expensive task the app asks which quality you need and shows the price in credits. • Rate an answer up or down: Arkheon remembers your notes and follows them in later answers. • Incognito mode: the conversation is erased as soon as you close it. ONE ACCOUNT EVERYWHERE Conversations, settings and balance are shared between the app, the arkheon.cpl3.dev website and the Telegram bot. Start in Telegram and continue in the app. CREDITS An answer from a regular model costs about 1 credit, an image from 11. Only the actual cost of the answer is charged. Credit packs are bought right in the app. Sign in with Telegram or by email.

Screenshots

One Markdown4 screens
Arkheon AI4 screens

Verdict

The call

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.

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 Arkheon AI sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
One Markdown versus Arkheon AI: the parameters behind the verdict, then further details
ParameterOne MarkdownArkheon AI
PriceFreeFree
Rating4.6 (141 ratings) — better—
Positive reviews81.9% of reviews—
Number of ratings141 — better—
Update frequencyMonthlyDaily — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS14.5 — better17.0
Further details — not scored
Size50 MB15 MB
Age rating4+4+
Developer禄海 区Pavel Plotnikov

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

Arkheon AI

One-time3
  • Pack S — 150 credits$2.99
  • Pack M — 450 credits$6.99
  • Pack L — 1000 credits$12.99

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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