日常物理 vs NETURAKU
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。
NETURAKU
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NETURAKU is an interactive educational simulation app for experiencing thermodynamics phenomena hands-on. The 5th app in the RAKU series following SUUGAKU (math), BUTURAKU (physics), DENRAKU (electricity), and HARAKU (waves). This time, the theme is heat. Learn and enjoy the wonders of heat and the depth of physical laws through 10 simulations. [10 Simulations] 1. Particle Motion (Ideal Gas) Observe particle motion in real time based on temperature. Change volume and temperature to measure pressure from wall collisions and experience the ideal gas law (PV = nRT). 2. Heat Conduction Simulate heat diffusion using a 2D finite difference method. Adjust heat source temperatures and thermal conductivity to observe temperature distribution changes based on Fourier's law in real time. 3. Phase Transition Matter changes state between solid, liquid, and gas as temperature varies. Intuitively experience the differences in particle behavior from lattice vibrations to free motion. Visually understand the concepts of melting and boiling points. 4. Carnot Cycle Follow the 4 processes - isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression - on a PV diagram. Visualize the efficiency of an ideal heat engine (eta = 1 - T_L/T_H). 5. Entropy Simulate the mixing process of two types of gas separated by a partition. When the partition is removed, observe entropy increasing in real time on a graph. 6. Thermal Radiation (Blackbody Radiation) Visualize the blackbody radiation spectrum (Planck distribution) in real time based on temperature. As temperature changes, the peak wavelength shifts (Wien's displacement law) and radiant energy is proportional to the fourth power of temperature (Stefan-Boltzmann law). 7. Speed Distribution (Maxwell-Boltzmann) View the speed distribution of gas particles as a histogram alongside the theoretical curve. As temperature rises, watch the distribution broaden and its peak shift to the right. Build intuition for the most probable, mean, and root-mean-square speeds. 8. Brownian Motion Visualize a large particle (pollen grain) undergoing irregular motion as it is buffeted by countless invisible smaller molecules. The path is drawn in real time, revealing the random-walk trajectory and how temperature and molecule count affect the motion. 9. Cooling Law (Newton's Law of Cooling) Simulate how a hot object cools at a rate proportional to its temperature difference with the surroundings. Adjust the cooling coefficient, initial temperature, and ambient temperature to watch the exponential decay curve on the temperature-time graph approach equilibrium. 10. Diffusion (Fick's Law) Simulate how a concentration imbalance, like a drop of ink, spreads from high to low until it becomes uniform. Tap to add ink and watch the center cross-section profile flatten (peak lowering and widening toward a uniform state). [Features] - Adjust parameters in real time across all simulations - Real-time display of physics formulas and numerical values - Dark mode / Light mode support - Clean home screen organized by category - Intuitive and beautiful UI - Only a banner ad at the bottom of the home screen - No in-app purchases or subscriptions [Recommended For] - Students studying thermodynamics or statistical mechanics in physics class - Anyone who wants to intuitively understand the properties of heat - Teachers looking for educational tools - Everyone interested in thermodynamics and statistical physics
Screenshots
Verdict
The clearest difference is update cadence: NETURAKU at every 4 days against 日常物理's every 28 months. NETURAKU 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, NETURAKU every 4 days. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.
| Parameter | 日常物理 | NETURAKU |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 28 months | Every 4 days — 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 | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Shosuke Sato | Fuji Bit Inc. |
In-app purchases
日常物理
No in-app purchases
NETURAKU
No in-app purchases









