MarkFlow vs Projection Mapping Toolbox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MarkFlow
A clean and fast reader for Markdown files, offering a comfortable, book-like experience with customizable themes and adjustable text. Easily navigate, search, and share your documents, with developer-friendly features like syntax highlighting.
- Book-like reading layout
- Multiple reading themes and dark mode
- Adjustable text size
- Table of contents generation
- In-document search
- Syntax highlighting for code blocks
- Export to PDF
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MarkReader is a clean, fast Markdown reader built for reading MD and README files with a comfortable, book-like layout. **Read Markdown the way you want** • Beautiful typography and multiple reading themes • Dark mode and adjustable text size • Selectable text for easy copying **Navigate and find information quickly** • Table of contents (TOC) / outline generated from headings • Search within the current document and jump between matches **Open content from multiple sources** • Open local .md / .markdown files • Browse folders and read documents from a directory **Rich content rendering** • Full GitHub Flavored Markdown (GFM) — headings, bold, italic, strikethrough, blockquotes, tables, task lists, and more • Syntax highlighting for code blocks • Footnotes rendering • LaTeX math formulas — inline and block equations • Mermaid diagrams (flowcharts, sequence diagrams, and more) • HTML tags support — text styles, links, images, lists, tables, and more **Developer-friendly reading** • Rendered view, raw Markdown view, and side-by-side compare mode MarkReader is optimized for focused reading, whether you are browsing documentation, reading a README, or reviewing notes. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yuwang001.github.io/xm/mf_privacy_policy.html
Projection Mapping Toolbox
This utility app assists projection mapping, AV, and live production professionals with on-site calculations. It offers tools for projector placement, throw distance, surface dimensions, and multi-projector layouts, streamlining workflows for technicians and designers.
- Throw Distance Calculator
- Multi-Projector Layouts
- Surface Dimension Tool
- Aspect Ratio Estimator
- CAD PDF Import
- Projector Inventory
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Projection Calculator Toolbox is a mobile utility for projection mapping, AV, and live production workflows. It is designed for on-site calculations where speed and accuracy matter. The app provides tools to calculate projector placement, throw distance, surface dimensions, and multi-projector layouts using real-world measurements and manufacturer specifications. Tools Included Throw Distance Calculator Calculate projector-to-surface distance using lens throw ratios. Multi-Projector Calculations Plan multi-projector layouts with support for edge blending. Surface Dimension Tool Convert physical surface measurements into pixel width and height. Aspect Ratio Estimator Estimate surface aspect ratio using live view or photo reference. CAD PDF Import Import technical drawing PDFs and visualize projector photometrics over layouts. Projector Inventory Store commonly used projector specifications and reuse them across calculations. Projection Calculator Toolbox is intended for technicians and designers who need reliable calculations on site without spreadsheets or desktop software. The interface prioritizes clarity and fast input to minimize setup time. Built with React and Capacitor for native iOS performance.
Screenshots
Verdict
The clearest difference is rating: Projection Mapping Toolbox at 5.0 against MarkFlow's 4.5. Projection Mapping Toolbox also leads on in-app purchases (none vs 3). MarkFlow's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (4 vs 1). On price, ads, 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
Both are free to download. MarkFlow sells 3 in-app purchases, starting at $2.99 per month. Projection Mapping Toolbox asks for nothing beyond the download.
Projection Mapping Toolbox holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
MarkFlow ships an update weekly, Projection Mapping Toolbox every 3 weeks. The most recent releases landed on September 16, 2026 and July 17, 2026 respectively.
| Parameter | MarkFlow | Projection Mapping Toolbox |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 45 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | 望 余 | Joseph Shea |
Customer experience
MarkFlow
Projection Mapping Toolbox
In-app purchases
MarkFlow
- Monthly Premium$2.991 Month
- Yearly Premium$19.991 Year
- Lifetime Access$12.99
Projection Mapping Toolbox
No in-app purchases





