Practice addition with problems that scale from single digits to triple digits as your streak grows. Play in untimed practice mode or switch on a 60-second timed challenge.
Practice addition. Difficulty grows from single to triple digits as your streak builds.
Scores are saved in this browser only.
概要・使い方
Discover how Addition Game executes your workflow locally in your browser with zero server uploads and total privacy.
Addition Game on Neranjan Tools is an ultra-fast, client-side utility crafted to deliver professional-grade processing without the privacy risks or upload delays of traditional cloud services. Whether handling sensitive business contracts, personal photos, or code snippets, you can accomplish your task in seconds.
Unlike conventional web converters that upload your confidential files to remote third-party servers, this tool operates 100% inside your browser's local sandbox using HTML5 Canvas, WebAssembly, and modern JavaScript engines. Your files are loaded into your device's memory, processed instantly by your local CPU and GPU, and saved directly to your disk, ensuring zero data leaks, zero server logging, and immunity to malware execution.
使い方ガイド
Choose a Mode
Toggle "60 Second Timed Mode" on for a race against the clock, or leave it off for untimed practice.
Solve the Problem
Type the sum into the input box and press Enter or click "Check" to submit your answer.
Build Your Streak
Correct answers grow your streak and move you from single-digit to double-digit and then triple-digit numbers. A wrong answer resets the streak.
サーバー保存なし
Files never leave your device. Complete immunity from server breaches or data leaks.
瞬時に処理
Immediate processing powered by your local device hardware with zero upload wait times.
全デバイス対応
Works smoothly on iOS, Android, macOS, Windows, and Linux across all modern browsers.
永久に100%無料
No hidden subscriptions, no credit card forms, and unlimited free daily usage.
100%クライアントサイドでプライバシーを保証
Neranjan Tools guarantees that Addition Game processes your data purely in your browser memory. We never store, log, or inspect your files, protecting you fully against virus uploads and data breaches.
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