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Mini apps for curious minds

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Mini games13 games
Simulations35 simulations
Tools7 tools

Featured

Hand-picked by the Astra team

PhysicsSimulation4.829.8K

Rocket Workshop

Build a rocket, launch it and find out what it takes to reach space.

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BiologySimulation4.8135.2K

Human Body Atlas

Explore, isolate, and take apart thousands of anatomical structures.

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PhysicsSimulation4.753K

Solar System

Explore the planets, the Moon's phases, and eclipses in one 3D model.

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Today's puzzles

+20 Stars each

Logic Gates

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Sudoku 9×9

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15 Puzzle

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Nonogram

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Guess the Equation

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Geography

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Scribble Launch

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Pipes

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Hashi

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Marbleslides

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Minesweeper

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Points for where you place in each of today's puzzles

Top picks

All time, across Astra

1Human Body Atlas135.2K
2Cell 3D86.3K
3Build a Cell74K
4Smart Encyclopædia56.6K
5Solar System53K
6Build an Atom41.5K
7Virtual Lab35.8K
8Tower of Hanoi35.1K

New apps

Fresh this month

General
4.6132 ratings48.1K

Geography

Name the country, pin its capital, pick its flag.

Browse by subject

Math27 apps
Physics16 apps
Chemistry6 apps
Biology4 apps
General2 apps
Browse all55 apps