Comparison

HTML Opener vs HTML Web Preview

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

Head to head
About

HTML Opener

Features
Read full description

Ever had AI write you a working HTML/CSS/JavaScript app in seconds, and just wanted to run it right now, on the phone in your hand? HTML Opener is a dedicated runner that lets you execute AI-generated web code, games, tools, and dashboards โ€” built with your favorite AI coding assistant โ€” as a real browser (WebKit) directly on iPhone. No computer required. WHAT IT SOLVES - The Files app only shows HTML as a static document โ€” no buttons, no animation, no JavaScript - Safari has no address bar option to open a local file:// path - Copy-pasting a project with a separate style.css or an images folder breaks the layout - Spinning up a local server on your Mac just to check something on your phone is overkill REAL BROWSER RENDERING Built on iOS's native WKWebView engine. Tailwind CSS, Three.js, Canvas animations, and modern JavaScript all render exactly as they would in a real browser. OPEN A WHOLE PROJECT FOLDER Select a folder containing style.css, app.js, and an images directory alongside your HTML โ€” every relative path resolves automatically. The layout that broke when you copy-pasted the code now renders perfectly. FULLSCREEN MODE Hide the header and margins and let the web content fill the entire screen. AI-built games and tools feel like a real installed native app, not a preview. FOUR SIMPLE ACTIONS 1. Open a file or folder 2. Jump back to any file you've opened before (Quick Switcher) 3. Auto-launch your favorite tool the moment the app opens 4. Settings for display, dark theme, and more WHO IT'S FOR - Anyone using AI to write code who wants to test it on the spot - Students learning to code who want instant feedback - Designers and developers checking mockups on a real device - Marketers reviewing an AI-drafted landing page on their own phone PRO (ONE-TIME PURCHASE, NOT A SUBSCRIPTION) Removes ads completely. Pay once, keep forever. Compatible with iPhone and iPad, iOS 17.0 or later. Stop opening your laptop just to check something. Open it in HTML Opener instead.

About

HTML Web Preview

Features
Read full description

Open your web projects on iPhone and iPad. HTML Web Preview opens a folder of HTML and its related files, with JSON and source available alongside the page. Explore your own study materials, web documents, small tools and prototypes on your device. โ€ข Open a project folder: keep HTML, CSS, JavaScript, images and JSON together with their file structure intact. โ€ข Keep your originals: the app does not modify selected files or folders. Switch between formatted JSON and original text, and refresh after editing files in another app. โ€ข Preview before running: folders open with page JavaScript disabled. Review the contents and run only projects you trust. A separately confirmed compatibility mode is available for some web features. โ€ข Adjust the view: collapse the controls or change the display area using mobile, tablet and computer aspect ratios. Aspect ratios do not reproduce every feature of a device. โ€ข Inspect errors: distinguish missing files from page errors and check the project activity log. Before you begin Projects can work offline when all required files are stored on your device and no external services are needed. Cloud downloads, external web resources and ads may require internet access. ZIP extraction, file editing, server-side programs such as Python, PHP or Node.js, project builds and download management are not supported. Open the finished web output folder for projects that need a build step. Page inputs and runtime state are not permanently saved and may reset when a project closes or restarts. Read-only access does not block every form of external communication. Run only trusted projects without sensitive files. The version 1.1 interface supports Korean, English, Japanese, Simplified and Traditional Chinese, German, French, Spanish and Brazilian Portuguese. Your documents and code remain in their original language.

Screenshots

HTML Opener3 screens
HTML Web Preview4 screens

Verdict

The call

HTML Opener and HTML Web Preview are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

HTML Opener ships an update every 3 days, HTML Web Preview every 2 days. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

ScorecardNo meaningful differences
HTML Opener versus HTML Web Preview: the parameters behind the verdict, then further details
ParameterHTML OpenerHTML Web Preview
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days โ€” better
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details โ€” not scored
Size11 MB8 MB
Age rating4+4+
DeveloperGASHIMA LABDo Yun Kim

In-app purchases

None

HTML Opener

No in-app purchases

None

HTML Web Preview

No in-app purchases

Questions

Is HTML Opener free?
HTML Opener is free to download, with no in-app purchases.
Is HTML Web Preview free?
HTML Web Preview is free to download, with no in-app purchases.
Do HTML Opener or HTML Web Preview have ads?
Both HTML Opener and HTML Web Preview show ads.
Which is updated more often, HTML Opener or HTML Web Preview?
HTML Opener ships an update every 3 days, and HTML Web Preview every 2 days. Most recently, HTML Opener was updated on October 2, 2026 and HTML Web Preview on September 28, 2026.

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