Simple 3D Geometry Discover

Simple 3D Geometry Discover is an educational Android app by Kindergarten that teaches 3D shapes through a sandbox-style town with cubicle characters and short missions. It addresses the difficulty of making early geometry lessons concrete for young children: instead of abstract diagrams, the app places spheres, cubes, cones, cylinders, toruses, pyramids, and prisms in a navigable environment where each shape is tied to an activity. A guided voice-over assistant explains the town as children explore, and dynamic weather such as snowfall, wind, and fog changes the look of the scene while keeping the shape-recognition tasks intact. Missions range from bowling with spheres in a parking lot and moving a boat into the water to starting a street race, matching colored balls on a beach, and building pyramids downtown. The app also shows how flat nets fold into solids, for example turning a circle into a sphere, a triangle into a cone, rectangles into a cylinder, and a cube net into a cube. Controls cover touch pads on phones and tablets, a physical gamepad, and keyboard and mouse on a TV-connected mini-PC. The current version is 1.57, released on 2026-03-08, and the package is 59 MB.

Key features

• Explorable sandbox town filled with 3D shapes and objects to discover
• Guided voice-over assistant that narrates the exploration
• Dynamic weather effects including snowfall, wind, and fog
• Cubicle characters and missions that unlock additional heroes
• Shape-based activities such as sphere bowling, boat movement, street racing, beach color matching, pyramid building, and prism collecting
• Net-to-solid demonstrations: circle to sphere, triangle to cone, rectangles to cylinder, circle to torus, and nets to pyramid, prism, and cube
• Touch controls for phones and tablets, gamepad support, and keyboard and mouse input for TV-connected mini-PCs
• HD cubicle-style graphics aimed at preschool and kindergarten audiences

How to install

1. Tap the download button on this page to get the 59 MB APK file.
2. When Android prompts you, allow your browser or file manager to install apps by enabling the Install unknown apps setting.
3. Open the downloaded APK file from your notifications or file manager.
4. Tap Install and wait for the package to finish installing.
5. Open the app; it requires Android 11 or later.

Recent Changes · 1.57

Version 1.57 includes an update related to Unity’s platform security and integrity. No other gameplay, content, or feature changes are noted for this release.

This app suits parents, caregivers, and early-education teachers looking for a playful way to introduce 3D geometry to toddlers, preschoolers, and kindergarten-aged children. It is also a reasonable fit for households that play Android games on a TV-connected mini-PC, since the controls support a gamepad or keyboard and mouse. Children who respond well to open sandbox exploration with light mission structure will get more out of it than those expecting a strict step-by-step curriculum.

Let a child explore the town freely before starting missions, so the voice-over can establish shape names in context. If you use a TV-connected mini-PC, connect a gamepad or keyboard and mouse for smoother navigation. Review the permission requests during installation and decide whether they match your comfort level for a child's device.

Simple 3D Geometry Discover offers a focused, activity-based approach to early shape learning with clear guidance and flexible controls. It is a sensible free option for families and classrooms that want geometry practice wrapped in sandbox play, provided the permission list is acceptable.