Comparison

コード学習 vs dev HTML Playground

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

Head to head
About

コード学習

Features
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エディタタブにhtmlコードを書くと、プレビュータブで実行されます。 iPhoneやiPadでhtmlを学習することができます。 また、書いたコードは共有ボタンから共有して実際にWebアプリ開発で活用することができます。

About

dev HTML Playground

Features
Read full description

dev HTML Playground (dHP) runs HTML written by any AI chatbot on your iPhone: free, no ads, and no coding knowledge needed. No computer required. Copy the AI's reply, paste it, and it becomes your own app. Its data stays on your phone, and it opens from your Home Screen like a regular app. IF YOU'RE LOOKING FOR - A way to run HTML that an AI made, on an iPhone, for free, with no ads and no programming knowledge - A place to keep the budget tracker or diary an AI built for you, with its data, and use it every day - A way to save the code an AI wrote, then fix it or grow it later - A way to build your own tools without owning a computer - A quick way to view HTML documents an AI wrote for you FEATURES Code Editor A syntax-highlighted editor for HTML, CSS and JavaScript with autosave and file management (add, rename, delete). Smart quotes and other typing "corrections" that break code are disabled. Instant Preview Run your code with one tap. console.log output and errors appear in a built-in console, so you can debug entirely on your phone. AI Integration A ready-made environment prompt for the AI chatbot you already use. Paste it, and the AI asks "What would you like to build?" — just answer in plain words. Bring the returned code in with one tap using "Paste & Replace All". You can finish real apps with zero programming experience. Safe Data Storage Every project ships with storage.js, a simple persistence library. Your apps' data is stored safely and kept separate per project. It also works in regular browsers, so your creations are portable. 7 Templates - Game (Crowd Rush): the real version of that "grow your crowd" ad game - Game (Pull the Pin): the real version of that pull-the-pin puzzle from the ads - Empty Project: start from a clean slate - Basic Sample: learn the ropes with a counter and notes - To-Do List: a practical task app - Habit Calendar: a monthly habit tracker - Game (NEON RUSH): a full neon mini-game demo Add to Home Screen Register your apps as Home Screen icons via Shortcuts and launch them like regular apps. Export Export as ZIP (for backup) or a single HTML file (for sharing). Send your work via AirDrop, save to Files, or continue editing on a Mac. Opening a saved .html file is just as easy: share it from the Files app and choose dHP. HTML that an AI exported "as a file", or that you received via AirDrop, becomes one of your apps. HTML Viewer Copy any HTML (like a document an AI wrote) and view it with one tap. Everything you view is kept in a history, and you can import it as a project to edit. Built-in Browser A browser tab for research or chatting with AI sites, so the whole loop stays in one app. About your AI Works with any AI chatbot you like. dHP does not connect to or integrate with any AI service; you simply paste what the AI wrote. Free AIs are fine; smarter ones just nail it on the first try more often. And if something breaks, dHP catches the error for you — copy it, paste it back to your AI, and it gets fixed. Everything is free, with no ads. Your "I want to build something" — right in your pocket.

Screenshots

コード学習2 screens
dev HTML Playground4 screens

Verdict

The call

The clearest difference is update cadence: dev HTML Playground at weekly against コード学習's every 9 months. コード学習's advantage is iOS requirement (15.2 vs 17.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

コード学習 ships an update every 9 months, dev HTML Playground weekly. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 4 level
コード学習 versus dev HTML Playground: the parameters behind the verdict, then further details
Parameterコード学習dev HTML Playground
PriceFreeFree
Update frequencyEvery 9 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.2 — better17.0
Further details — not scored
Size2 MB3 MB
Age rating4+17+
DeveloperKuniaki FujimotoKOICHIRO YAMAMOTO

In-app purchases

None

コード学習

No in-app purchases

None

dev HTML Playground

No in-app purchases

Questions

Is コード学習 free?
コード学習 is free to download, with no in-app purchases.
Is dev HTML Playground free?
dev HTML Playground is free to download, with no in-app purchases.
Do コード学習 or dev HTML Playground have ads?
Neither コード学習 nor dev HTML Playground shows ads.
Which is updated more often, コード学習 or dev HTML Playground?
コード学習 ships an update every 9 months, and dev HTML Playground weekly. Most recently, コード学習 was updated on September 17, 2026 and dev HTML Playground on September 10, 2026.

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