Comparison

GAllery 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

GAllery

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生成AIに書いてもらったコードを、貼り付けるだけでiPhoneの中で動かせます。パソコンは要りません。 生成AIにアプリを作ってもらったものの、動かす場所がなくて困ったことはありませんか。GAlleryは、その受け皿です。コードをコピーして貼り付け、実行を押すだけ。言語は自動で見分けます。 HTML、CSS、JavaScript、Pythonに対応。作ったものはアプリとして保存され、ホーム画面のような一覧からいつでも開けます。 主な機能 ・コードを貼り付けて、その場で実行 ・HTML、CSS、JavaScript、Pythonに対応 ・言語の自動判定 ・複数ファイルや画像をまとめて保存 ・コードの表示、編集、複製、削除 ・実行中の一時停止と速度変更 ・アイコン、名前、並び順を設定 ・コードと設定は端末内に保存 ・利用者のコードから外部ネットワークへの通信を遮断 ・広告、アカウント登録、アクセス解析なし こんな方に ・生成AIでアプリやツールを作ってみたい方 ・パソコンを持っていない、または手元にない方 ・プログラミングを学びはじめた方 ・思いついた小さな道具を、その場で形にしたい方 無料プランでは、アプリを1つ保存できます。 有料プラン「GAllery Pro」では、保存できるアプリ数の制限がなくなり、壁紙、テーマカラー、アイコンのサイズと名前表示をカスタマイズできます。GAllery Proは1か月ごとに自動更新されます。価格は購入画面に表示され、Apple Accountの設定からいつでも管理・解約できます。 利用規約: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ プライバシーポリシー: https://sites.google.com/view/tworks-gallery-6799646416

About

HTML Opener

Features
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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 — built with your favorite AI coding assistant — as a real browser (WebKit) directly on iPhone. No computer required. WHAT IT SOLVES - The Files app only shows HTML as a static document — 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 — 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.

Screenshots

GAllery3 screens
HTML Opener3 screens

Verdict

The call

The clearest difference is ads: GAllery at none against HTML Opener's shown. On price, update cadence, 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

GAllery ships an update every 5 days, HTML Opener every 4 days. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 5 level
GAllery versus HTML Opener: the parameters behind the verdict, then further details
ParameterGAlleryHTML Opener
PriceFreeFree
Update frequencyEvery 5 daysEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS17.017.0
Further details — not scored
Size16 MB11 MB
Age rating4+4+
DeveloperDaisuke TsurukawaGASHIMA LAB

In-app purchases

None

GAllery

No in-app purchases

None

HTML Opener

No in-app purchases

Questions

Is GAllery free?
GAllery is free to download, with no in-app purchases.
Is HTML Opener free?
HTML Opener is free to download, with no in-app purchases.
Do GAllery or HTML Opener have ads?
HTML Opener shows ads; GAllery does not.
Which is updated more often, GAllery or HTML Opener?
GAllery ships an update every 5 days, and HTML Opener every 4 days. Most recently, GAllery was updated on October 6, 2026 and HTML Opener on October 15, 2026.

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