
About
This educational app helps children ages 3-7 develop foundational number recognition and mathematical reasoning skills. Designed by a neuroscientist, it uses a proven cognitive model to build genuine understanding through progressive exercises.
What's New in Rocket 123s
2.1
May 11, 2026
What's New • Updated number library • Improved progression • Stability fixes
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FAQ
What ages is Rocket 123s designed for?
Rocket 123s is designed for children ages 3–7, including pre-K and kindergarten learners. It is also beneficial for children with learning differences who require explicit practice with numbers.
What specific math skills does Rocket 123s teach?
Rocket 123s teaches number recognition from 1–10 and beyond, form constancy (recognizing numbers across different fonts), number sorting, basic sequencing, and the foundations of mathematical reasoning and visual processing of numerical symbols.
What is the cognitive model behind Rocket 123s?
Rocket 123s is built on a three-pillar neurocognitive model: Attention, Intention, and Rehearsal. This model, used by Dr. Donalee Markus, focuses on building genuine skill through hierarchical and progressive exercises.
Who developed Rocket 123s?
Rocket 123s was designed by Dr. Donalee Markus, a neuroscientist with 40 years of experience working with children. She earned her Ph.D. at Northwestern University and completed post-doctoral training under Reuven Feuerstein.
What devices does Rocket 123s support?
Rocket 123s is available on iPhone, iPad, and iPod. It is designed for iOS devices.
How much does Rocket 123s cost?
Rocket 123s is a paid app priced at $5.99. There are no in-app purchases or advertisements.
How often is Rocket 123s updated?
The latest version of Rocket 123s is 2.1, which was last updated on May 11, 2026. The app was originally released on March 3, 2018.
Does Rocket 123s have ads?
No, Rocket 123s does not contain advertisements. It is a paid application focused on providing an uninterrupted learning experience for children.





