Practice basic addition and subtraction concepts. Discs are counted, then covered, and some slide out from under the cover. Your job is to tell how many are still hidden under the cover. Work with numbers 1-5 or 1-10. Discs are displayed in a 5-frame or 10-frame format.

The iPad version includes an option to use numbers to 20 in two 10 frames. This option was added at the request of elementary education teacher candidates at Augustana College in Rock Island, IL who were working with kindergarten students. The iPad version also includes an option to count or subtilize the number of discs. That option was added in response to a user request.

Developed as part of the NumberSense Project at Augustana College in Rock Island, IL.

What’s New

Version 1.5.6

• Updated to support iOS12 - thank you for your patience.
• A few other minor tweaks
• As time allows, I'd enjoy hearing how you're using this app in the classroom and at home.

Ratings and Reviews

2.0 out of 5
3 Ratings

3 Ratings

June's MAma ,


Dear fellow educators:
Do not waste $.99 on this! Created in 2012 and still so riddled with bugs that I don't believe anyone has attempted to fix the issues.

zznimue ,

Great support for developing number sense

Love the way this app helps children truly understand what numbers mean. Five can also mean 1&4; 2&3, and 5&0! Additionally, the app allows parents and educators to adjust the difficulty as the learner’s skill improves. I do wish it included a pictorial or auditory indicator of success or failure as the children using this app are usually not yet readers.

App Privacy

The developer, Classroom Focused Software, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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