素因数分解クイズ vs CharSpin
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
素因数分解クイズ
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素因数分解を見極めろ!あなたの分解力が試される! 表示される数値から正しい因数分解の解答を選び、ランキング上位を目指す脳トレ系クイズゲーム。 遊びながら数学を鍛え、瞬発力を向上させよう。 遊び方 • 画面に数値が表示される • 4つの選択肢から正しい素因数分解の解答を選ぶ • 早く答えるほどスコアが上がり、制限時間が増加 • 時間がなくなる前にできるだけ多くの問題に正解しよう ゲームの特徴 • シンプルで直感的に遊べるクイズゲーム • 初級・中級・上級の3つの難易度に挑戦可能 • 制限時間内にスコアを競うスピード感のあるルール • 全国ランキング機能で他のプレイヤーと競争 • 和風デザインと心地よいBGMで集中できる環境 こんな人におすすめ • 脳トレゲームが好きな人 • 数学力・暗算を鍛えたい人 • 素数が好きな人、または学習中の人 • シンプルなクイズゲームを楽しみたい人 • ランキングで競争するのが好きな人 今すぐダウンロードして、分解スピードに挑戦しよう。
CharSpin
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CharSpin turns Chinese characters into spinning tops. A character's strokes are its top's shape: how many there are, how lopsided they sit and how heavy the typeface is decide how long it spins and how hard it hits. THE THOUSAND CHARACTER CLASSIC Every top comes from the 1,500-year-old Thousand Character Classic. Start with its first line; knowing six in ten characters of a section opens the next, all the way to the last. Characters come in four typefaces — sans, serif, clerical and seal script — for 3,875 tops. PULL, AIM, LAUNCH Hold and pull back to start the countdown; let go right on "Shoot!" for a perfect launch. Once a match you can knock the stadium to shake a top into a pocket. FIRST TO 4 POINTS Xtreme finish 3, over finish 2, burst finish 2, spin finish 1. Your three tops go out in order; your opponent's order stays hidden until each one steps up. FACE-TO-FACE TWO-PLAYER Pair two phones with a QR code and play over a direct connection — no internet needed, just keep Wi‑Fi on. If they can't reach each other, phones signed in to Game Center pair over the internet instead. Two-player matches pay double coins. CHARACTER BOOK All 999 characters of the Classic, each with its reading (zhuyin and pinyin) read aloud, meaning, radical, stroke count, its line in the Classic and common words, from Taiwan's Ministry of Education dictionaries. The 11 hardest are replaced by an easier stand-in character, with a note on the original. LOOKS An optional Launch Set adds two skins (Dewdrop Blue Pegasus and Sky-Water Green Asura) and two stickers, and Season 2 adds two more (Frost-White Valkyrie and Desert-Ochre Wolf) and two stickers, each bought on its own. Each skin trails its own effect while it spins and bursts with a signature flourish on a hard hit. Looks only — a top plays exactly the same. A one-time purchase, not currency, with a grown-up check first. Everything else is free. No ads, no data collected.
Screenshots
Verdict
The clearest difference is in-app purchases: 素因数分解クイズ at none against CharSpin's 3. 素因数分解クイズ also leads on iOS requirement (16.6 vs 18.0). CharSpin's advantage is ads (none vs shown). On price, update cadence and device support 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. CharSpin sells 3 one-off in-app purchases. 素因数分解クイズ asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | 素因数分解クイズ | CharSpin |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 5 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 26 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | YUKI WATANABE | Nan-Kuang Lee |
In-app purchases
素因数分解クイズ
No in-app purchases
CharSpin
- Launch Set$0.99
- Valkyrie & Wolf$0.99
- S1 Pass$4.99









