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視覚・エイム・サウンドの3モードで反応速度をテスト。5ラウンド平均とパーセンタイルランキング付き。無料オンライン反射神経テスト — ミリ秒単位で速度を測定。
反応速度テスト is a free online ゲーム tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.
We noticed most online tools upload your files to remote servers. Since privacy is our core principle, we built this tool to process everything locally in your browser.
Students and office workers stealing a short break between tasks. A quick browser challenge clears your head without the commitment of opening a full game or installing anything on your work machine.
はい、完全無料で登録不要です。
はい、モバイルブラウザでタッチ操作に対応しています。
ゲーム
Yes. 反応速度テスト is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.
🔒 Privacy & Security：All processing happens locally in your browser. Files are never uploaded or stored.
🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.