高校数学電卓 vs Answer Hider

高校数学の計算を手軽にサポートする電卓アプリです。 ▼ 2次関数 ・たすきがけによる因数分解（過程を図で表示） ・平方完成（a(x-p)²+q 形式で表示） ▼ 整数 ・組合せ nCr ・順列 nPr ・階乗 n! ・素因数分解 ▼ 積分 ・不定積分（3次関数まで） ・定積分 ▼ 数列の和 Σ ・Σ(k=1〜n) の展開形と因数分解形を同時表示 ・Σ(k=1〜n-1) も自動計算 ・数値代入による検算機能 ▼ 三角形の面積 ・3点の座標から面積を計算 ▼ その他 ・ライト／ダークテーマ切替 【特長】 ・登録不要・広告なし・完全オフラインで動作 ・すべての機能が無料です。

Answer Hider is a simple study app that helps you organize exam materials, hide answers in study photos, and review them before a test. Add photos of worksheets, notes, printed handouts, vocabulary lists, or problem sets. Then hide the answers or key terms you want to memorize. Tap to reveal the answer, mark it as difficult or correct, and focus your review on what you need to remember. ■ Recommended for ・Students who study from printed worksheets ・Hiding answers and reviewing them like flashcards ・Organizing range sheets and study photos separately ・Preparing for midterms, finals, and regular exams ・Studying from notes, handouts, and problem sets ・Keeping exam materials organized by subject or course ■ Main features ・Organize by exam period ・Organize by subject or course ・Separate range sheets from study photos ・Manually hide answers in photos ・Tap to reveal hidden answers ・Mark answers as difficult, correct, or removed ・Review only difficult items ・Modes for school and college use ・No ads, so you can stay focused ■ Free plan The core hide-and-review flow is available for free. The free plan includes up to 30 photos and 1 exam period. ■ Premium Premium unlocks unlimited photos and unlimited exam periods. Choose a 30-day pass, a 60-day pass, or Lifetime Pro. 30-Day and 60-Day Passes are non-renewing and do not auto-renew. Lifetime Pro is a one-time purchase. ■ Privacy This app does not show ads. It does not use external AI or automatic answer generation. Your study photos and exam materials are not uploaded to an external server. ■ Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ■ Privacy Policy https://docs.google.com/document/d/e/2PACX-1vQM37OvTcHoNAevOTIl5I1Tt3hE3vktVhNAJ63hYVhcMYRbg3_ItqM2wfe1CZg8X_xACNQheT7HYuDl/pub Study from your own photos. Hide answers, reveal them, and review what you missed.