Candela FD vs Read.md
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Candela FD
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Candela FD is a professional NAC (Notification Appliance Circuit) voltage drop calculator built for fire alarm technicians, engineers, and inspectors. Quickly determine if your circuit design will deliver adequate voltage to every notification appliance on the run. Candela FD uses conservative UL max current ratings — not typical manufacturer values — so your calculations meet code compliance standards. CALCULATOR - Select wire gauge (12, 14, 16, or 18 AWG) - Enter wire run length, panel voltage, and minimum operating voltage - Add devices from a built-in database of real notification appliances - Adjust quantities and override mA values per device on the fly - Instantly see voltage drop, end-of-line voltage, and pass/fail status DEVICE DATABASE - 89+ notification appliances from major manufacturers - System Sensor, Wheelock, Edwards/EST, Gentex, Bosch, Potter, Siemens, and Hochiki - Horns, strobes, horn/strobes, and speakers - Browse by manufacturer or search by model number - UL max current ratings for code-compliant calculations BUILT FOR THE FIELD - Works completely offline — no internet required - Dark interface designed for readability on job sites - Fast, focused, no account required Built by Prossess.
Read.md
This app allows you to beautifully view markdown files on your iPhone, iPad, or Mac. It offers perfect rendering of complex elements like tables, code blocks, and diagrams, with offline support and privacy in mind.
- Perfect markdown rendering
- Syntax highlighting for 180+ languages
- Mermaid diagram rendering
- GitHub repository browsing
- Export to PDF & HTML (Pro)
- Smart diagram fixing
- Auto-generated table of contents
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Open any .md file and read it beautifully — on your iPhone, iPad, or Mac. Read.md is a markdown reader. Not an editor, not a note-taking app, not a vault system. A reader. Tap a .md file, it opens, it looks great, you read it. PERFECT RENDERING Tables, code blocks, nested lists, task lists, blockquotes, images, links — everything renders correctly. Syntax highlighting for 180+ programming languages. GitHub Flavored Markdown fully supported. MERMAID DIAGRAMS Flowcharts, sequence diagrams, Gantt charts, class diagrams, and more render natively. Tap to zoom into any diagram for a detailed view. EXPORT TO WORD, PDF & HTML Turn any document into a real Word (.docx) file with proper headings, tables, lists and code blocks, a clean, paginated, print-quality PDF, or a self-contained HTML file — diagrams and images intact. Share it, print it, archive it. Or export the original Markdown source. (Word, PDF and HTML export are Read.md Pro; Markdown export is free.) OPEN FROM GITHUB Read documentation straight from the source. Browse any GitHub repository — public or private — navigate its file tree, and open any .md file with the same beautiful rendering. Sign in with a personal access token; your token stays on your device. (Read.md Pro) SMART DIAGRAM FIXER ASCII art and box-drawing diagrams that look broken in other apps? Read.md detects and corrects misaligned characters automatically so your diagrams look the way they were intended. NAVIGATE LONG DOCUMENTS Auto-generated table of contents from your headings. Search within any document with match highlighting and next/prev navigation. Your scroll position is remembered when you come back to a file. ZERO FRICTION No account needed to read. No workspace. No vault. No setup. Works as your default .md file handler — open markdown and plain-text files from Files, Finder, email attachments, AirDrop, the share sheet, or drag and drop. ADAPTS TO YOUR DEVICE iPhone: stacked navigation with a frosted-glass nav bar and bottom sheets. iPad: landscape split-view, portrait slide-over panels, trackpad and keyboard support. Mac: split-view with sidebar, reader, and table-of-contents panel, keyboard shortcuts, and translucent panels. Everything adapts automatically when you resize windows or rotate your device. DARK AND LIGHT MODES Switch between dark and light themes, or follow your system setting. Adjust font size to your preference. Everything updates live. PRIVATE BY DESIGN Opens instantly, even large files. Your markdown is rendered entirely on your device — file contents are never uploaded, and reading works fully offline. No ads. No account required to read. The only feature that touches the network is GitHub browsing, and only when you choose to use it. We use anonymous, aggregate analytics to improve the app. READ.MD PRO A one-time purchase — or a yearly subscription with a free trial — unlocks Word/PDF/HTML export and GitHub browsing. Everything else stays free, forever. WHAT PEOPLE USE IT FOR Reading AI-generated markdown exports. Turning markdown into Word documents for colleagues. Reading GitHub README files on mobile. Viewing documentation and project specs on the go. Reviewing technical docs from colleagues. Browsing personal notes written in markdown. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Candela FD at none against Read.md's 2. Read.md's advantage is device support and iOS requirement (15.0 vs 17.0). On price 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. Read.md sells 2 in-app purchases, starting at $9.99 per year. Candela FD asks for nothing beyond the download.
| Parameter | Candela FD | Read.md |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (101 ratings) — better |
| Positive reviews | — | 88.2% of reviews |
| Number of ratings | — | 101 — better |
| Update frequency | — | Fortnightly |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | — | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Saheed Adepoju | Pavel Abin |
In-app purchases
Candela FD
No in-app purchases
Read.md
- Read.md Pro Yearly3 Days trial$9.991 Year
- Read.md Pro (Lifetime)$24.99









