Comparison

Anger Detection vs MD Preview

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

Head to head
About

Anger Detection

Features
Read full description

Determine anger level from facial expressions

About

MD Preview

This app provides a clean and elegant way to read markdown files from various cloud storage services. It offers beautiful formatting, syntax highlighting for numerous programming languages, and customizable themes. An optional one-time purchase unlocks additional features like PDF export and custom font sizes.

Highlights
  • Open .md files from cloud storage
  • Beautifully formatted markdown rendering
  • Syntax highlighting for 180+ languages
  • Toggle between preview and raw markdown
  • Collapsible table of contents
  • 6 free reading themes
  • Export to PDF (premium)
Features
Read full description

MD Preview is a fast, elegant markdown reader. Open .md files from anywhere — Files, iCloud Drive, Google Drive, Dropbox — and read them with beautiful formatting. Built for people who work with AI tools that generate markdown files. No more squinting at raw text or pasting into web tools. Just open the file and read. WHAT IT DOES - Opens .md files from any document provider on your device - Renders headings, tables, code blocks, task lists, images, and more - Syntax highlighting for 180+ programming languages - Toggle between rendered preview and raw markdown - Share files via the iOS share sheet - Collapsible table of contents with tap-to-jump navigation - Pin recent files so they stay at the top, forever 6 FREE READING THEMES - Paper — Warm cream tones with serif headings - Midnight — Dark mode, easy on the eyes - Forest — Deep greens, earthy, and calm - Rosé — Soft pinks, elegant typography - Ocean — Cool blues, modern and clean - Lavender — Purple hues, gentle and refined PREMIUM UNLOCK — $1.99 ONE-TIME Want more? Upgrade once and keep it forever: - Export to PDF — Save beautifully rendered documents as PDFs - Custom Font Size — Adjust text size to your preference - 4 Extra Themes — Solarized, Dracula, Nord, and Tokyo Night - No subscription. Just a single purchase. NO ACCOUNT. NO ADS. PRIVACY FIRST. Just open a file and read it. That's it. MD Preview doesn't store, upload, or copy your files. It reads them in place from wherever they live. Recent files are remembered by path for quick access — nothing else is saved. Supports GitHub Flavored Markdown, including tables, strikethrough, task lists, and fenced code blocks.

Screenshots

Anger Detection1 screens
MD Preview4 screens

Verdict

The call

The clearest difference is in-app purchases: Anger Detection at none against MD Preview's 1. MD Preview's advantage is ads (none vs shown) and update cadence (every 3 days vs fortnightly). On price, device support and iOS requirement 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. MD Preview sells 1 one-off in-app purchase. Anger Detection asks for nothing beyond the download.

UpkeepUpdate frequency

Anger Detection ships an update fortnightly, MD Preview every 3 days. Both last shipped on September 11, 2026.

Scorecard3 real differences · 7 level
Anger Detection versus MD Preview: the parameters behind the verdict, then further details
ParameterAnger DetectionMD Preview
PriceFreeFree
Rating—5.0 (20 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—20 — better
Update frequencyFortnightlyEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS17.7.216.6 — better
Further details — not scored
Size36 MB5 MB
Age rating4+4+
DeveloperHideaki UchikoshiGejun Zhu

In-app purchases

None

Anger Detection

No in-app purchases

1 purchases

MD Preview

One-time1
  • MD Preview Premium$2.99

Questions

Is Anger Detection free?
Anger Detection is free to download, with no in-app purchases.
Is MD Preview free?
MD Preview is free to download, with in-app purchases available.
Do Anger Detection or MD Preview have ads?
Anger Detection shows ads; MD Preview does not.
Which is updated more often, Anger Detection or MD Preview?
Anger Detection ships an update fortnightly, and MD Preview every 3 days. Most recently, Anger Detection was updated on September 11, 2026 and MD Preview on September 11, 2026.

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