WebviewTester vs Twinin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WebviewTester
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このアプリは、WebViewを使って指定したWebページを表示し、SafariのWebインスペクタを用いて挙動を確認するためのツールです。 モバイルブラウザの表示検証や開発時のデバッグ用途に便利です。 主な機能: • WebインスペクタでWebViewを検出(iOS 16.4以降) • クッキーの有効・無効を切り替え • ローカルストレージの有効・無効を切り替え • セッションストレージの有効・無効を切り替え • 外部リンク(target=”_blank”)はSafariなど外部ブラウザで開かれます • WebViewの履歴戻り動作に対応 ※ このアプリは開発者向けの動作確認用ツールです。 ※ スワイプ操作ではページの最新状態には更新されません。
Twinin
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Twinin revolutionizes how you consume content on your device by allowing you to split your screen between video playback and web browsing. No more switching between apps - enjoy true multitasking! KEY FEATURES: ◆ Dual Screen Display Split your screen to display video and web content simultaneously. Perfect for watching tutorials while coding, enjoying videos while shopping, or keeping up with live streams while browsing social media. ◆ Flexible Split Ratio Adjust the screen division ratio with a simple drag. Make one screen larger when you need to focus, or keep them equal for balanced viewing. Three quick presets: 50-50, mostly top, mostly bottom. ◆ Instant Screen Swap Switch top and bottom content instantly with one tap. Your video moves up, web moves down - or vice versa. Seamless transition without interrupting playback. ◆ Smart Content Management - Play videos from your photo library or files - Full web browsing with bookmark support - Browse history for quick access to previous sites - Auto-play option for videos ◆ Optimized for All Orientations Works perfectly in both portrait and landscape modes. The interface adapts intelligently to give you the best viewing experience regardless of how you hold your device. ◆ Multi-language Support Available in English, Japanese, German, French, Spanish, Portuguese, and Chinese. Switch languages anytime in settings. ◆ Twinin Premium (one-time purchase) Unlocks the advanced camera features (unlimited recording, 4K, freeze frame in the document camera, text recognition, scan history and self-timer) and removes the full-screen ad before video downloads. PERFECT FOR: - Students watching lectures while taking notes - Developers following tutorials while coding - Multitaskers who hate switching apps - Anyone who wants to maximize their screen usage Twinin is designed with simplicity and efficiency in mind. The intuitive interface means you'll be multitasking like a pro within seconds of downloading. Download Twinin today and discover a whole new way to use your device!
Screenshots
Verdict
The clearest difference is in-app purchases: WebviewTester at none against Twinin's 1. WebviewTester also leads on ads (none vs shown) and update cadence (daily vs fortnightly). On price, 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
Both are free to download. Twinin sells 1 one-off in-app purchase. WebviewTester asks for nothing beyond the download.
WebviewTester ships an update daily, Twinin fortnightly. The most recent releases landed on October 8, 2026 and October 19, 2026 respectively.
| Parameter | WebviewTester | Twinin |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 18.2 | 17 — better |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 17+ |
| Developer | Seiji Fujiyama | YUUSUKE HARASAWA |
In-app purchases
WebviewTester
No in-app purchases
Twinin
- Twinin pro$1.99









