日常物理 vs HARAKU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
日常物理
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身のまわりのあらゆる現象を、物理で測り直そう。 「日常物理」は、教科書の数式を生活の物差しに変える、シンプルで美しい計算アプリです。 新幹線の速さ、雷までの距離、お湯を沸かすカロリー、月の重力—— 27の計算で、世界の見え方が少しだけ変わります。 ■ 6つのカテゴリ × 27の計算 ◇ 毎日の"動き" 速度・加速度・力・運動エネルギー・停止距離・向心加速度 歩き、自転車、ドライブ。日常の動きを数字で実感できます。 ◇ 落ちるとどうなる? 自由落下の距離・時間・速度、位置エネルギー、バネの伸び、振り子の周期 スマホを胸の高さから落としたら何秒?直感では掴みにくい現象がクリアになります。 ◇ ものを投げる 放物運動の軌道と初速度 ボール・矢・水やりまで、投げる角度と距離の関係を体感。 ◇ 音と光 雷までの距離・エコー・音速・ドップラー効果 ピカッと光ってからゴロゴロまで何秒?雷雲との距離が一瞬でわかります。 ◇ 生活のエネルギー お湯を沸かすカロリー・階段で消費するエネルギー・電気代・LED節約 家計と健康、両方に効く物理。 ◇ 宇宙スケール 惑星の重力・地球の自転速度・光年距離 月で体重は何kg?太陽までの光の旅は何分? ■ プリセットで「数字を知らなくても」遊べる 「歩き 1.4 m/s」「自転車 20 km/h」「新幹線 320 km/h」「音速 1225 km/h」—— ふだん意識しない速さや距離が、ワンタップで入力欄に入ります。 数字に詳しくなくても、すぐに物理の世界に飛び込めます。 ■ あなたの"物理ノート"が育つ ・計算履歴を自動で記録 ・お気に入り機能で、よく使う計算をすぐ呼び出し ・公式と単位の解説つきで、なぜその答えになるのかが必ずわかる ■ 美しいデザイン、心地よい操作感 カテゴリごとに異なるグラデーションカラー。 ライト/ダークモード両対応。iPhoneとiPadの両方に最適化。 広告なし。完全日本語。オフラインで動きます。 ■ こんな人におすすめ ・通学・通勤中に雑学を貯めたい大人 ・理科の宿題と日常の直感を結びつけたい中高生 ・子どもの「なんで?」に一緒に答えたい親 ・物理が好き、または「ちょっと苦手だった」すべての人へ 教科書を開かなくても、物理は今日から始められる。 日常を、物理で読み解こう。
HARAKU
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HARAKU is an interactive physics simulator that brings wave phenomena to life. Designed for students, educators, and anyone curious about how waves work, HARAKU lets you see and control wave behavior in real time. Developer: Fuji Bit Inc. Part of the educational "Raku" physics series, HARAKU is the wave-physics edition. Whether you are studying for a test, looking for a classroom demo, or simply enjoy how waves behave, HARAKU turns abstract wave equations into vivid, touchable experiences. 10 Simulations: - Superposition: Combine two sine waves and observe constructive and destructive interference. Adjust amplitude, frequency, and phase for each wave independently. - 2D Ripples: Tap to place wave sources on a 2D surface. Watch interference patterns form in real time using finite-difference wave equation solving. Multiple sources create beautiful interference fringes. - Doppler Effect: Drag a moving wave source and observe how wavefronts compress ahead and stretch behind. Two observers show the frequency shift. Push past Mach 1 to see a sonic boom. - Standing Wave: Explore harmonics on a fixed string. See nodes and antinodes appear as you change the harmonic number. Adjust tension and damping to observe how they affect the wave. - Refraction: Visualize Snell's law as a wave crosses between two media. Change the angle of incidence and wave speeds to observe refraction and total internal reflection. - Beat Frequency: Superimpose two waves with slightly different frequencies and watch beats emerge. The red envelope clearly shows the amplitude modulation. - Interference: Watch two-point-source interference fringes form bright (constructive) and dark (destructive) bands. Vary source separation and frequency to see how fringe spacing changes. - Diffraction: A plane wave passes through a slit and spreads out via Huygens' principle. Adjust the slit width relative to the wavelength to see how diffraction strength varies. - Fourier Synthesis: Build square, triangle, and sawtooth waves from a sum of sine harmonics. Increase the harmonic count to watch the synthesis approach the target waveform while seeing each harmonic's contribution. - Reflection: Watch a traveling wave hit a boundary and reflect back. Toggle between fixed-end (phase inverted) and free-end (phase preserved) boundaries to see how the standing wave forms from the incident and reflected waves. Features: - Real-time simulation with smooth 60fps animation - Intuitive parameter sliders for hands-on exploration - Physics info sheets with formulas and explanations - Beautiful dark-themed canvas visualization - Light and Dark mode support - Japanese and English localization (auto-switches by device language) - No sign-up required — open and explore instantly Pricing and Monetization: - Price: Free - In-App Purchases (IAP): None - Ads: A single AdMob banner is shown Part of the "Raku" educational series: - SUUGAKU - Mathematics - BUTURAKU - Mechanics - DENRAKU - Electromagnetism - HARAKU - Wave Physics
Screenshots
Verdict
The clearest difference is update cadence: HARAKU at weekly against 日常物理's every 28 months. HARAKU also leads on device support and iOS requirement (13.0 vs 16.0). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
日常物理 ships an update every 28 months, HARAKU weekly. The most recent releases landed on September 8, 2026 and September 17, 2026 respectively.
| Parameter | 日常物理 | HARAKU |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 28 months | Weekly — better |
| Ads | — | Yes |
| In-app purchases | No | No |
| Devices | — | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Shosuke Sato | Fuji Bit Inc. |
In-app purchases
日常物理
No in-app purchases
HARAKU
No in-app purchases









