Comparison

IDFA Checker byNSDev vs HTML Opener

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

Head to head
About

IDFA Checker byNSDev

Easily view and copy your device's Identifier for Advertisers (IDFA). This tool is useful for developers registering test devices for advertising platforms like AdMob.

Highlights
  • View IDFA
  • Copy IDFA to clipboard
  • Share IDFA
  • Test device registration aid
  • AdMob integration support
Features
Read full description

You can view the IDFA and copy it to your clipboard or forward it using the share feature. You can check and obtain the IDFA, advertising ID, when registering a test device for AdMob, etc.

About

HTML Opener

This app renders local HTML, CSS, and JavaScript files in a real browser on your iPhone and iPad. It allows you to test web prototypes and view interactive pages without needing a computer or local server. Easily open entire project folders and toggle between desktop and mobile views.

Highlights
  • Renders local HTML, CSS, JavaScript
  • Opens entire project folders
  • Desktop and mobile view toggle
  • Fullscreen mode for web apps
  • Quick switcher for recent projects
  • Auto-launch primary tool
Features
Read full description

When you open an HTML file in the iPhone Files app, iOS just dumps lines of raw code on your screen. Buttons do not work, styles break, and Safari cannot open local file links. HTML Opener fixes that. It runs your local HTML, CSS, JavaScript, and images in a real WebKit browser directly on your iPhone and iPad. No Mac, no terminal, and no local server required. WHAT IT SOLVES - Files app dumps raw code and text on screen instead of rendering the webpage - Safari has no address bar option to open local file:// links - Opening a single file breaks CSS styles and image assets in neighboring folders - Setting up a local server on your computer just to check mobile layout is tedious REAL WEBKIT BROWSER RENDERING Built on iOS's native WKWebView engine. Buttons, forms, CSS styling, canvas animations, and modern JavaScript run exactly as they would in Safari. OPEN AN ENTIRE PROJECT FOLDER Select a folder containing style.css, script.js, and an images directory alongside your HTML file. All relative file paths resolve automatically with zero broken images or missing styles. DESKTOP & MOBILE VIEW TOGGLE Switch between phone layout and 1024px desktop view with a single tap. Review horizontal dashboards, data tables, and desktop web tools without broken layouts. FULLSCREEN MODE Hide navigation bars and margins to give your web content the entire display. Web apps and tools feel like installed native apps. FOUR SIMPLE ACTIONS 1. Open a local file or folder 2. Quick Switcher to jump between recent projects 3. Auto-launch your primary tool as soon as the app starts 4. Clear cache, toggle dark theme, and customize display options WHO IT IS FOR - Anyone stuck when iPhone opens HTML as raw code - Developers and designers testing web prototypes on actual iOS hardware - Anyone running self-built dashboards, calculators, or tools on the go - Students learning web development who want instant mobile testing PRO (ONE-TIME PURCHASE, NEVER A SUBSCRIPTION) Removes ads completely. Pay once, use forever. Compatible with iPhone and iPad, iOS 17.0 or later. Stop dealing with raw code dumps. Open real interactive web pages with HTML Opener.

Screenshots

IDFA Checker byNSDev4 screens
HTML Opener4 screens

Verdict

The call

The clearest difference is in-app purchases: IDFA Checker byNSDev at none against HTML Opener's 1. IDFA Checker byNSDev also leads on iOS requirement (15.6 vs 17.0). On price, ads and device support 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

Both are free to download. HTML Opener sells 1 one-off in-app purchase. IDFA Checker byNSDev asks for nothing beyond the download.

Scorecard3 real differences · 7 level
IDFA Checker byNSDev versus HTML Opener: the parameters behind the verdict, then further details
ParameterIDFA Checker byNSDevHTML Opener
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequency—Every 4 days
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size3 MB12 MB
Age rating4+4+
DeveloperNIHON SYSTEM DEVELOPER CORPORATIONGASHIMA LAB

Customer experience

IDFA Checker byNSDev

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HTML Opener

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

IDFA Checker byNSDev

No in-app purchases

1 purchases

HTML Opener

One-time1
  • HTML Opener PRO$4.99

Questions

Is IDFA Checker byNSDev free?
IDFA Checker byNSDev is free to download, with no in-app purchases.
Is HTML Opener free?
HTML Opener is free to download, with in-app purchases available.
Do IDFA Checker byNSDev or HTML Opener have ads?
Both IDFA Checker byNSDev and HTML Opener show ads.

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