シンプルFLASH暗算 vs FlashAnzan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
シンプルFLASH暗算
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『シンプルFLASH暗算』は、画面に一瞬ずつ表示される数字を合計して答えるトレーニングアプリです。暗算力・注意力・ワーキングメモリの向上に役立ちます。UIはスマホ縦型に最適化。学習や脳トレ、受験対策にも。 ◆ 特長 ・一桁/二桁/三桁の難易度に対応 ・ステージモードで検定試験対策 ・表示口数(最大10口)/表示時間/消灯時間を自由に調整 ・効果音ON/OFF、ダーク/ライトのテーマ切替 ・ヒント表示で直前の出題を確認可能 ・オフラインでサクサク動作、すぐ再挑戦できるシンプル設計 ◆ 使い方 1. 「スタート」をタップして数字を順番に確認 2. 表示が終わったら合計を入力して「判定」 3. 正解・不正解が大きく表示され、ヒントで出題の内訳も確認できます ◆ こんな人におすすめ ・暗算を速く・正確にしたい ・通勤通学のスキマ時間に脳トレしたい ・受験・資格の計算力を底上げしたい ◆ プライバシー ・アカウント登録不要、個人情報の収集はありません ・設定は端末内に保存されます
FlashAnzan
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Practice flash anzan (flash mental arithmetic) in the same format as the Japanese grading exam—and climb the ranks. GRADED MODE (30 RANKS, KYU 10 TO DAN 20) Each rank uses the exam's total-time format: numbers flash within a fixed total time, you answer 10 problems, and 70 points is a pass. YOUR GRADE IS KEPT Your best rank is recorded on the device and in iCloud, so it follows you to a new device. ANSWER BY VOICE Type on the number pad, or just say the answer. Speech recognition runs entirely on your device—your voice is never sent anywhere. CUSTOM PRACTICE Set digits, count, and display time yourself—from slow single digits to 3-digit numbers at 0.3 seconds. IPHONE DUO Big numbers when it's open; fold it in half and the question sits above with the number keys below. Close it and keep practicing on the outer screen. IPHONE, IPAD AND MAC Works on iPhone, iPad and Mac, and your grade follows you between them through iCloud. No ads. Available in nine languages: English, Japanese, Chinese (Simplified and Traditional), Korean, German, Spanish, French and Brazilian Portuguese. Note: This app is not affiliated with or endorsed by any certification body.
Screenshots
Verdict
The clearest difference is in-app purchases: シンプルFLASH暗算 at none against FlashAnzan's 1. シンプルFLASH暗算 also leads on iOS requirement (15.6 vs 18.0). FlashAnzan's advantage is ads (none vs shown) and update cadence (every 3 days vs fortnightly). On price 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. FlashAnzan sells 1 one-off in-app purchase. シンプルFLASH暗算 asks for nothing beyond the download.
シンプルFLASH暗算 ships an update fortnightly, FlashAnzan every 3 days. The most recent releases landed on November 8, 2026 and October 29, 2026 respectively.
| Parameter | シンプルFLASH暗算 | FlashAnzan |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 4 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | TSUKASA YONAHA | Haruhiko Kishi |
In-app purchases
シンプルFLASH暗算
No in-app purchases
FlashAnzan
- Unlock All Grades$3.99








