Sugoku vs 高校化学 mol計算と反応式の最初の一手

Sugoku is a drill app for high school mathematics, shown the way it looks in a printed textbook: fractions stacked with a horizontal bar, √ with a vinculum, raised exponents, and ∫, Σ, lim rendered properly. Problems are generated on the fly, so you never run out of practice. WHAT YOU CAN PRACTICE - 235 topics covering the full Japanese high school curriculum (Math I, A, II, B, C, III): algebra and proof, quadratic functions, sets and logic, trigonometry, exponentials and logarithms, analytic geometry, differentiation and integration, sequences, statistical inference, vectors, complex plane, conic sections, limits and calculus. - Three difficulty levels, from fundamentals to university entrance exam level. - Answers are not forced to be integers: type fractions and radicals directly. The answer boxes show the shape of the answer, so you learn how results are written. - Figures label vertices, angles and side ratios; graphs plot key points (intercepts, vertex, center). - Missed problems come back immediately. Bookmarks and mistake analysis let you drill only your weak spots. KYOKUISEN (RANKING) - A daily rating match with a leaderboard grouped by school year. - One attempt per day; watch a video ad to add attempts, up to three per day. - Your nickname and rating are visible to other players. Do not enter your real name or anything you would not want public. - Offline, your own records are shown instead. SUGOKU PREMIUM (IN-APP PURCHASE) - Removes ads. - Three Kyokuisen attempts every day, no video ads needed. - 20 coins at the start of each Kyokuisen season. - Bookmarks up to 500 items (20 on the free tier). - Answer timer with time analysis, plus the Sakura skin. - One-time purchase. Restore from the settings screen. COMMON TEST PREP PLAN (AUTO-RENEWABLE SUBSCRIPTION) - Topic-by-topic practice booklets in the style of Japan's Common Test (in Japanese). One booklet per field (14 in total) is free; the rest are included in the Common Test Prep Plan. - Monthly plan: ¥480 per month. Yearly plan: ¥3,800 per year (prices in Japan; other regions follow the App Store price). - Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically for the same period and price unless auto-renew is turned off at least 24 hours before the end of the current period. - Manage or cancel in your device's Settings > Apple ID > Subscriptions. Restore purchases from the subscription screen. ADS - On the free tier, banner ads appear on the topic list and the result screen. - Video ads play only when you choose to add a Kyokuisen attempt. Ads never interrupt you mid-problem. PLEASE NOTE - The app is available in English and Japanese. When your device language is not Japanese, problem statements, answer fields and choices are shown in English. Hints, step-by-step explanations and Common Test prep booklets remain in Japanese. - Requires iOS 17.0 or later, iPhone and iPad. Study records are stored on your device. Leaderboard data is stored in Apple CloudKit. See the privacy policy for details, or contact us through the support page. Terms of Use: https://ottub.github.io/sugoku/terms.html Privacy Policy: https://ottub.github.io/sugoku/privacy-policy.html

化学の問題で、答えを出す前に「手が止まる」ことはありませんか。 このアプリは、問題を見た瞬間に「最初の一手」が反射で出るように鍛える練習アプリです。完答の速さより、初手の速さ。 ■ 計算は「最初の一手」を反射化（答えは機械で検算） 「数値を見たら、まず全部molに換算」「反応式の係数比＝mol比でつなぐ」——化学の計算はこうした“初手のパターン”で決まります。計算は全12単元・101パターン・771問でカバー（理論化学が中心で、有機の構造決定の入口まで）。収録する問題は、答えを機械で検算してから入れています。 ・物質の構成と化学結合／物質量と反応式／溶液と中和／気体／pH／酸化還元・電気分解／熱化学／束一性／結晶／化学平衡・反応速度／溶解度積と沈殿／有機の構造決定の入口 ■ 無機・有機は「要点カード」で穴チェック（106枚） 計算だけでは埋まらない無機・有機は、要点カードで穴をつぶせます。反応式を載せている38枚は、原子数と電荷が合っているかを機械でチェックしています。 ・無機：気体の製法/性質・金属イオンの分析・典型元素・遷移金属・電池と電気化学・工業的製法 ・有機：官能基と異性体・脂肪族・芳香族・糖類/アミノ酸/油脂・高分子 ・理論の要点：緩衝液・溶解度積・電離平衡・ルシャトリエ ■ こんな人に ・化学の問題で、何から手をつけるか迷って時間を溶かしてしまう ・受験に向けて、範囲の“抜け”を短時間で確認したい ・完答の前に、まず「解き方の入口」を体に入れたい ■ 料金について ・無料で「物質量と反応式」の単元をためせます。 ・買い切り（¥800）で、すべての単元の演習と、無機・有機の要点カードがすべて解放されます。サブスクではありません。一度購入すれば、機種変更後も「購入を復元」で引き継げます。 ・広告なし・アカウント登録なし・学習記録は端末内だけに保存（外部送信なし）。 ※中学・高校の内容に沿った練習用問題です。実在の入試問題・教科書の文章は使っていません。