Comparison

HTML Viewer vs JS Server

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

Head to head
About

HTML Viewer

This app is a fast and lightweight HTML editor and viewer for iOS devices. It allows developers to write, edit, and preview HTML code in real-time with a built-in web view engine, offering a clean and focused development environment.

Highlights
  • Live HTML preview
  • Syntax highlighting code editor
  • Auto indentation
  • Dark and Light themes
  • Save and manage multiple files
  • Create, open, and manage HTML files
Features
Read full description

The HTML viewer and editor for iPhone and iPad. Open, write, preview and debug HTML, CSS and JavaScript. Free to start, with an optional Pro upgrade. See your page update live as you type, test it on phone and tablet sizes, then fix problems with built-in DevTools and one-tap tools. No computer needed. FREE FOR EVERYONE • Code editor with syntax highlighting, line numbers, find & replace and auto indent • Live preview of your page • 3 projects, plus any file you open from Files or share from another app • 6 editor themes (light and dark) and 10 fonts • 20+ everyday tools: format code, find syntax problems, color picker, contrast checker, QR codes, regex tester and more • Starter templates to begin from • Learn: a free step-by-step HTML, CSS and JavaScript course with quizzes, practice and a certificate • No ads GO PRO FOR THE FULL TOOLKIT • Unlimited projects and unlimited open tabs • Split view: code and preview side by side • Device frames: iPhone, iPad and desktop sizes with a live status bar • Smarter autocomplete for tags, classes, CSS properties and file paths, plus the full symbol row • 50+ tools: SEO, accessibility and performance audits with one-tap fixes, Color Studio, Image Studio with background removal • Export as ZIP, PDF or a single file, and share your projects • 80+ ready-made templates, all with light and dark themes • Open on another device over Wi-Fi with a QR code • All themes and fonts, and alternate app icons BUILT FOR REAL WORK • Console, Network, Elements and Storage inspector for your page or any live website • Open URL: load any website, view its source and save it as a project • Connect to a server over SFTP or FTP and edit files directly • Preview Markdown and JSON as well as HTML • Home Screen widgets and Siri shortcuts • Archive keeps deleted files for 30 days • Available in 32 languages WHO IT'S FOR Students learning to code, web designers, and developers who want to fix a page away from their desk. PRO PLANS Choose monthly, yearly or a one-time lifetime purchase. A free trial may be available on subscriptions for new subscribers. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Payment is charged to your Apple ID at confirmation of purchase. Lifetime is a single payment with no renewal. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://attractive-basket-ce6.notion.site/Privacy-Policy-Html-Editor-30d5cd442d3280b49b72e9a2436c853e

About

JS Server

Features
Read full description

Server turns your iPhone or iPad into a developer-friendly HTTP host. Point a listener at a file and it gets served. Write JavaScript and it runs. WHAT YOU CAN DO Serve static files Pick a file from the Files app, or edit one inline. Custom Content-Type per listener. A default HTML page is provided for quick smoke tests. Write JavaScript routes Every JavaScript listener gets an Express-like surface running inside JavaScriptCore. Register routes with server.get, server.post, server.all, and respond with res.html, res.json, res.text, res.send. Set status and headers fluently. No Node dependency. Your code evaluates on device. Read and write files from JS A sandboxed fs module is bridged through Swift: readFile, writeFile, exists, mkdir, readdir, unlink, stat. Every listener gets its own private directory. Any path that tries to escape the sandbox is rejected. Call external APIs Outbound fetch is bridged too. Pass a URL, optionally a method, headers, or a body, and get back status, ok, headers, text, and json. Perfect for proxies, webhooks, or quick integrations. Run multiple listeners at once Each listener runs on its own port, started and stopped independently. Bonjour advertises them on your local network so peers can find them by name. Live Activities A listener running in the background shows up in the Dynamic Island and on the Lock Screen with the port and request count. Inspect every request The Console panel logs every HTTP request, every console.log, and every runtime error. Tap an HTTP row to expand the full request (method, URL, headers, body) and response (status, headers, body, timing). Syntax highlighting In-app editor with an IDE-style dark theme for JavaScript, Python, and HTML. WHO IT IS FOR Developers prototyping APIs on the go. QA engineers testing mobile clients against a controllable backend. Anyone who needs to serve a JSON blob, a mock endpoint, or a small HTML page from their iPad without setting up a real server. PRIVACY No accounts, no telemetry, no analytics. Nothing leaves the device except the HTTP responses you explicitly send. All code, data, and logs live in your app sandbox. Questions or feedback: server@cyber-man.pl

Screenshots

HTML Viewer4 screens
JS Server4 screens

Verdict

The call

The clearest difference is price: HTML Viewer at Free against JS Server's $4.99. HTML Viewer also leads on chart position (#82 vs unranked). JS Server's advantage is in-app purchases (none vs 9) and update cadence (daily vs every 3 weeks). On 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

CostPrice · In-app purchases · Ads · Monetization

HTML Viewer is free to download; JS Server costs $4.99 up front. HTML Viewer sells 9 in-app purchases, starting at $2.99 per month. JS Server asks for nothing beyond the download.

UpkeepUpdate frequency

HTML Viewer ships an update every 3 weeks, JS Server daily. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 7 level
HTML Viewer versus JS Server: the parameters behind the verdict, then further details
ParameterHTML ViewerJS Server
PriceFree — better$4.99
Rating4.5 (102 ratings) — better—
Positive reviews84.6% of reviews—
Number of ratings102 — better—
Update frequencyEvery 3 weeksDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
Best chart rank#82 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size108 MB3 MB
Age rating17+4+
DeveloperHardik KhanesaTomasz Dbrowski

In-app purchases

9 purchases

HTML Viewer

Subscriptions5
  • Student Monthly Subscription$2.991 Month
  • Monthly Subscription$2.991 Month
  • Monthly Subscription$4.991 Month
Show 2 more
  • Student Yearly Subscription$9.991 Year
  • Yearly Subscription$19.991 Year
One-time4
  • Student Offer Lifetime$9.99
  • Student Lifetime Offer$14.99
  • Lifetime$19.99
Show 1 more
  • Lifetime$29.99
None

JS Server

No in-app purchases

Questions

Is HTML Viewer free?
HTML Viewer is free to download, with in-app purchases available.
Is JS Server free?
JS Server costs $4.99, with no in-app purchases.
Do HTML Viewer or JS Server have ads?
Neither HTML Viewer nor JS Server shows ads.
Which is updated more often, HTML Viewer or JS Server?
HTML Viewer ships an update every 3 weeks, and JS Server daily. Most recently, HTML Viewer was updated on October 31, 2026 and JS Server on October 25, 2026.

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