# Tenohira Lab — A Pocket Science Museum

> A Pocket Science Museum (iPhone/iPad app by Daisaku Seto.)

- Source: https://appshunter.io/ios/app/tenohira-lab/id6766134357 (this page in markdown: same URL + `.md`)
- Developer: [Daisaku Seto](https://appshunter.io/developer/1889853807)
- Category: Education, Entertainment
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.4 · 13 MB
- Languages: American English
- Released: 2026-05-06
- Data updated: 2026-07-11
- User reviews in markdown: https://appshunter.io/ios/app/tenohira-lab/id6766134357/reviews.md

## What is Tenohira Lab?

Reach out to everyday wonder, and feel the beauty of equations.
A pocket-sized science museum.

THREE EXHIBIT HALLS

[Celestial Hall]
Solar systems and galaxies running on Metal compute.
- Solar System: 8 planets + Moon + Galilean moons + Titan, with real-time moon phases.
- Milky Way: 19 named real stars (Sirius, Vega, Betelgeuse, Polaris, ...).
- Big Galaxy: ~5000 stars on stable orbits around a supermassive black hole. Side view reveals the lens-shaped galactic structure.

[Chaos Room]
Deterministic, yet unpredictable. Four flavors of chaos.
- Three-body problem: figure-8 orbit (Chenciner-Montgomery), Pythagorean (Burrau), random.
- Double pendulum: Lagrangian mechanics, RK4 integration.
- Lorenz attractor: two orbits 0.001 apart, diverging exponentially before your eyes — the butterfly effect, visualized.
- Magnetic pendulum: which magnet captures it, mapped as a fractal across the entire screen.

[Fluid Lab]
Cloud simulation + AI Cloud Lens.
- Three sliders (water temp, sky temp, humidity) generate all 10 cloud types.
- Photograph the real sky — Gemini AI identifies the cloud type and re-creates the same conditions in simulation.

FEATURES
- iPhone and iPad (Big Galaxy is stunning on iPad).
- Japanese, English, Chinese.
- Each exhibit has a "Go Deeper" section with related books (Principia, Cosmos, A Brief History of Time, The Fractal Geometry of Nature, ...).
- Explanation level toggle: Kids / Standard.
- Zero ads, zero tracking. The only purchase is a one-time ¥300 supporter pack that unlocks unlimited AI Cloud Lens (free 5 uses per day).
- Designed quietly, with care, to reach children and curious minds alike.

May this become a starting point for reaching toward everyday wonder.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Supporter Pack | $1.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-05-06

No release notes.

## More apps by Daisaku Seto

- [ToneCraft](https://appshunter.io/ios/app/tonecraft/id6761473626)
- [ScoreLibrary](https://appshunter.io/ios/app/scorelibrary/id6761536209)
- [SAPIENTIA Research](https://appshunter.io/ios/app/sapientia-research/id6761721069)
- [A.L.I.S.](https://appshunter.io/ios/app/alis/id6762501528)
- [Ruten](https://appshunter.io/ios/app/ruten/id6763751678)

All apps by Daisaku Seto: https://appshunter.io/developer/1889853807

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-11.*