Comparison

DOS Focus vs Markdown Viewer

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

Head to head
About

DOS Focus

Enhance concentration with nostalgic computer sounds and a distraction-free environment. Customize focus sessions, track progress, and personalize your interface with classic DOS themes for improved productivity.

Highlights
  • Retro soundscapes
  • Customizable focus sessions
  • Focus progress reports
  • Classic DOS themes
  • Offline and minimal design
Features
Read full description

Defragment your mind and restore clarity — one retro beep at a time. DOS Focus helps you stay in the zone using nostalgic computer sounds that bring a calm, distraction-free atmosphere. Whether you’re working, studying, or just taking a digital detox, this app turns your focus sessions into a retro experience. Features: • Retro Soundscapes — Immerse yourself in the soothing hum of old-school computers. • Custom Focus Sessions — Choose from quick 15-minute sprints to deep 4-hour marathons. • Focus Report — Track your sessions and see how your concentration improves over time. • Retro Themes — Personalize your screen with classic DOS colors — from Cyan to Magenta. • No distractions — Simple, offline, and minimal. Just focus. Why it works: Retro sounds evoke a sense of calm and simplicity. DOS Focus eliminates digital clutter so your brain can reboot, recharge, and refocus — like defragmenting your hard drive. Whether you’re a developer, writer, student, or anyone craving quiet productivity, DOS Focus brings back the feeling of working on a clean, timeless system — where nothing interrupts your flow. - Reboot your focus. Reclaim your clarity. - Welcome to DOS Focus.

About

Markdown Viewer

Features
Read full description

See your Markdown the way it's meant to look. Open any README, note or doc and get a clean, formatted page: headings, tables, checklists and code, without the clutter. Jump anywhere with the outline, find any word, and export to PDF when you need to share. Built for developers, technical writers, and anyone who regularly opens README files or documentation and wants something better than a plain text editor. WHAT IT DOES · Renders GitHub Flavored Markdown — headings, tables, code blocks, task lists, blockquotes, links, and web images · Table of contents — auto-generated from your headings, tap to jump to any section (side panel on iPad, sheet on iPhone) · Raw source view — Markdown source, read-only · Full-text search — with match counter and navigation · Export to PDF — share your document as a formatted, print-ready PDF · Refresh — reload after editing in another app · Recents — your recently opened documents one tap away WHAT IT DOESN'T DO This is a viewer, not an editor. It opens files you already have and presents them clearly. Supports .md, .markdown, .mdown, and .mkd files. Open Markdown files from the Files app or other apps.

Screenshots

DOS Focus4 screens
Markdown Viewer4 screens

Verdict

The call

The clearest difference is in-app purchases: Markdown Viewer at none against DOS Focus's 2. On price, update cadence, ads 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. DOS Focus sells 2 in-app purchases, starting at $17.99 per year. Markdown Viewer asks for nothing beyond the download.

UpkeepUpdate frequency

DOS Focus ships an update every 3 months, Markdown Viewer every 2 months. The most recent releases landed on September 18, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 8 level
DOS Focus versus Markdown Viewer: the parameters behind the verdict, then further details
ParameterDOS FocusMarkdown Viewer
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS18.617.0 — better
Further details — not scored
Size105 MB2 MB
Age rating4+4+
DeveloperNguyen Vu ThaiMircules

In-app purchases

2 purchases

DOS Focus

Subscriptions1
  • Try DOS FOCUS PRO$17.991 Year
One-time1
  • Try DOS FOCUS PRO$8.99
None

Markdown Viewer

No in-app purchases

Questions

Is DOS Focus free?
DOS Focus is free to download, with in-app purchases available.
Is Markdown Viewer free?
Markdown Viewer is free to download, with no in-app purchases.
Do DOS Focus or Markdown Viewer have ads?
Neither DOS Focus nor Markdown Viewer shows ads.
Which is updated more often, DOS Focus or Markdown Viewer?
DOS Focus ships an update every 3 months, and Markdown Viewer every 2 months. Most recently, DOS Focus was updated on September 18, 2026 and Markdown Viewer on October 12, 2026.

Other comparisons