Owlet: Cube6 is an app that uses two Owlet CubeTower manipulatives. This app builds on the Cube3 app by enabling students to create six-digit numbers by stacking small cubes in the columns of two CubeTowers.

Cube6 has three modes. Each corresponds to a different topic in place value: Thousands, Money, and Decimals.

For each topic, there are five different activities.
- Explore: Students place cubes in the CubeTowers to create numbers that are shown on the computer.
- Make: Students are prompted to make a target number by placing cubes in the CubeTowers.
- Build: Students solve number puzzles. For example, students might be asked to build a number between 200,000 and 300,000 using 15 cubes.
- Compare: Students create a number in the CubeTowers and then compare it to a number generated by the app.
- Round: Students use the CubeTowers to round a number to a specified place.