Comparison

SaferHands vs MDViewer

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

Head to head
About

SaferHands

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Explore how hand tracking can be used for machine safety with your phone camera! When a hand is visible sound will play and the device will vibrate. If the hand is inside an orange warning zone the sound playing will be lower volume. When a hand is inside the red danger zone the sound and vibrations will stop completely.

About

MDViewer

Instantly view Markdown, Mermaid diagrams, and JSON files with this native iOS app. It offers syntax highlighting for over 180 languages, LaTeX math rendering, and PDF export. Your documents remain private and accessible offline.

Highlights
  • Markdown viewing with GFM support
  • Mermaid diagram rendering
  • Syntax highlighting for 180+ languages
  • LaTeX math formula support
  • Interactive JSON viewer
  • PDF export
  • Offline functionality
Features
Read full description

MDViewer — Fast Markdown Viewer for iPhone & iPad Open Markdown (.md), Mermaid and JSON files instantly with a fast, native iOS app. MDViewer is a lightweight Markdown Viewer and Markdown Reader designed for developers, technical writers, students and anyone working with Markdown documents on the go. Preview Markdown files with GitHub Flavored Markdown support, render Mermaid diagrams, view JSON files, and export to PDF — all from your iPhone or iPad. ------ KEY FEATURES ------ Markdown Viewer & Reader • Open and preview Markdown (.md) files instantly • Full GitHub Flavored Markdown (GFM) support • Tables, task lists, code blocks, images, links and more • Fast native rendering optimized for iOS Syntax Highlighting • 180+ programming languages with automatic detection • Clean, readable code blocks with color themes Mermaid Diagrams • Render Mermaid diagrams inline: flowcharts, sequence diagrams, Gantt charts and more • Tap to zoom and explore complex diagrams • Full Mermaid.js support Math Formulas (KaTeX) • Render LaTeX math formulas with KaTeX • Inline and display math support • Perfect for academic and scientific documents JSON Viewer • Interactive collapsible JSON tree view • Syntax highlighted JSON with formatting • Expand and collapse nested objects and arrays Additional Features • PDF export — share documents as beautifully formatted PDFs • Table of Contents — navigate long documents easily • Find in document — search text with match highlighting • YAML and plain text viewing • Dark and Light mode support • Works offline — no internet connection required • Universal app — optimized for iPhone and iPad ------ WHO IS IT FOR ------ • Developers previewing README files, documentation and code notes • Technical writers reviewing Markdown documents on the go • Students reading LaTeX-formatted notes and papers • Anyone who needs a fast, reliable Markdown viewer on iOS MDViewer reads your files locally. No cloud, no account, no tracking. Your documents stay on your device. Download MDViewer and start viewing Markdown files on your iPhone and iPad today.

Screenshots

SaferHands3 screens
MDViewer4 screens

Verdict

The call

The clearest difference is update cadence: MDViewer at every 3 days against SaferHands's every 2 months. SaferHands's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SaferHands ships an update every 2 months, MDViewer every 3 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

Scorecard2 real differences Ā· 6 level
SaferHands versus MDViewer: the parameters behind the verdict, then further details
ParameterSaferHandsMDViewer
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size150 MB8 MB
Age rating+44+
DeveloperManoMotionCrocopliers

In-app purchases

None

SaferHands

No in-app purchases

None

MDViewer

No in-app purchases

Questions

Is SaferHands free?
SaferHands is free to download, with no in-app purchases.
Is MDViewer free?
MDViewer is free to download, with no in-app purchases.
Do SaferHands or MDViewer have ads?
Neither SaferHands nor MDViewer shows ads.
Which is updated more often, SaferHands or MDViewer?
SaferHands ships an update every 2 months, and MDViewer every 3 days. Most recently, SaferHands was updated on October 26, 2026 and MDViewer on October 31, 2026.

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