EARTH SCIENCE SIMULATOR

Watch the
Earth move.

Plate tectonics, seismic waves, epicenter location, volcanic eruptions, lava flow, the rock cycle, Earth's interior, geomagnetism and atmospheric circulation. Nine simulations unfold in four phases and finish at a real landform or a representative observation.

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Free9 simulations16 languagesiPhone · iPad · Android

9simulations

4phases each

$0no in-app purchases

16languages

Simulations

Nine simulations

Moving plates and earthquakes, volcanoes and rocks, and the Earth inside and around it. Every simulation runs through four phases — start, forming, developing, complete — and ends at a real-world example.

Moving Plates & Earthquakes

Plate Tectonics

Watch divergent, convergent and transform boundaries build ridges, trenches and faults over time.

Real example: the Mid-Atlantic Ridge
Real example: the Japan Trench and the Japanese islands
Real example: the San Andreas Fault

Seismic Waves

P and S waves spread from the focus until three seismographs record the initial tremor and the main shaking.

Example: an M7-class crustal earthquake with a focus 20 km deep

Epicenter Location

Turn the S–P time into distance with Omori's formula, then find the epicenter where three circles meet.

Example: finding the epicentre by triangulation from three stations

Volcanoes & Rocks

Volcanic Eruption

Viscosity and gas content set the eruption style — from Hawaiian to Plinian in four stages.

Example: four eruption styles set by viscosity and gas content

Lava Flow

Release four lavas of different viscosity and compare their speed, thickness and how far they travel.

Example: viscosity sets the width and reach of a lava flow

Rock Cycle

Follow one rock as it turns igneous, sedimentary and metamorphic, and melts back into magma.

Example: granite → mud → mudstone → gneiss → magma, a full rock cycle

Inside and Around the Earth

Earth Interior

Crust, mantle, outer and inner core — and the S-wave shadow zone made by the liquid outer core.

Example: the S-wave shadow zone reveals a liquid outer core

Geomagnetism

The dipole field from the core's dynamo, the magnetosphere that deflects the solar wind, and field reversals.

Example: the reversal about 770,000 years ago (the origin of the name Chibanian)

Atmospheric Circulation

Three cells driven by heating at the equator, and the belts of trade winds, westerlies and polar easterlies.

Example: the rainy equator, the desert belts near 30° and the westerlies over Japan

Screenshots

Four phases you can see

The current phase and a one-line explanation are always shown at the top, and every element — plates, mantle, focus, stations — is labeled.

**Why do continents move?**Plate boundaries shape the land

**What P and S waves tell us**Seismic waves racing to the stations

**Three circles, one point**Triangulate the epicenter

**Viscosity and gas decide the eruption**From Hawaiian to Plinian

**Viscosity shapes the flow**Compare speed, thickness and runout

**Rocks are always changing**Igneous, sedimentary, metamorphic

**Seismic waves see through the Earth**The S-wave shadow zone and the liquid core

**The Earth is a giant magnet**The magnetosphere and field reversals

**Where do the wind belts come from?**Three cells, trade winds and westerlies

How it works

How to use it

Every simulation works the same way.

1
Pick a simulation
Tap one of the nine cards on the home screen.
2
"Tap to start"
Tap the "Tap to start" button in the middle of the screen to begin. Some simulations let you choose options first, such as the boundary type.
3
Follow the four phases
The dark band at the top shows "Phase N/4" and a one-line explanation. Step between phases with ◀ ▶ and set the speed from 0.5x to 3x.
4
Reach the real-world goal
In the last phase the real-world example appears in an orange band and the simulation stops. Tap "Details" on the band for the terms and formulas.

Features

Built for learning

Step by step in four phases

Every simulation runs in four phases, so you always know what is happening and where it ends.

Everything is labeled

Plates, mantle, trench, fault, focus, magnetosphere — each element on screen carries a label.

Explanations with formulas

Info sheets cover Omori's formula, Jeffreys' equation, Snell's law, the Coriolis force and more.

At your own pace

Set the speed from 0.5x to 3x, and step back and forth between phases with the ◀ ▶ buttons.

Easy to read and use

Dark and light themes, optimized for both phones and tablets.

16 languages

English, Japanese, Chinese (Simplified/Traditional), Korean, Spanish, Portuguese, German, French, Hindi, Indonesian, Russian, Italian, Turkish, Thai and Vietnamese, following your device language.

Pricing & ads

The app is free. There are no in-app purchases, subscriptions or paid unlocks.

A Pangle banner ad is shown at the bottom of the screen. On iOS, the App Tracking Transparency (ATT) prompt appears at launch, and ads are personalized only if you allow tracking. On Android, the app asks once whether ads may be personalized. Either choice can be changed later from "About this app" > "Ad settings". The app itself has no accounts and never asks for or collects personal information such as your name or email address; it stores only your theme and ad choice on the device.

Requirements: iPhone and iPad with iOS 15.0 or later; Android 7.0 (API 24) or later phones and tablets.

The Earth beneath your feet, in your pocket.