Science-Based Cognitive Training Games

Cognitive decline is not inevitable.

CoDo's brain training is grounded in decades of cognitive neuroscience research. Each of the four exercises is derived from a validated clinical assessment. Train daily on iPhone or iPad, and step into the fully immersive version on Apple Vision Pro or Meta Quest. Train solo, or with the people you love, and with regular practice, you could help reduce your risk of dementia by up to 25%.

How Does Cognitive Training Help Prevent Dementia?

The approach is informed by the ACTIVE trial, an NIH-funded study of 2,832 adults. Its 20-year follow-up (published February 2026) found that speed-of-processing training was associated with a 25% lower risk of dementia. Research suggests that just a few minutes of training, at regular intervals, may be enough to produce meaningful, lasting cognitive benefit.

Learn more about the ACTIVE Study

4 Pillars of Cognitive Health

Each exercise targets a specific cognitive domain essential for maintaining mental sharpness.

Useful Field of View

Based on the speed-of-processing paradigm from the ACTIVE trial. This exercise trains your peripheral vision and visual processing speed. By identifying objects that appear briefly in your peripheral vision, you enhance your ability to process visual information quickly and accurately.

Selective Attention

Based on the Stroop effect (1935). This task challenges your brain to ignore conflicting information and focus on relevant details. This improves your ability to maintain focus in distracting environments and enhances cognitive flexibility.

Working Memory (N-back)

Based on the dual N-back task studied by Jaeggi et al. (2008). By remembering and comparing information from two steps ago, you strengthen the neural pathways responsible for short-term memory retention and fluid intelligence.

Divided Attention

Multi-modal attention splitting task. Trains your brain to process multiple streams of information simultaneously. By tracking current objects in space while simultaneously recalling and identifying previously displayed items, you develop better multitasking abilities and improve overall cognitive flexibility.

Frequently Asked Questions

What is the best science-based brain training app?

CoDo is a science-based cognitive training platform whose four exercises (Useful Field of View, Selective Attention with Stroop, Working Memory with N-back, and Divided Attention) are derived from validated clinical cognitive assessments, not casual game mechanics. CoDo's approach is informed by the ACTIVE trial.

Can brain training apps actually help prevent dementia?

It depends on the type of training. A 20-year follow-up of the ACTIVE trial found that speed-of-processing training, the same type used in CoDo's Useful Field of View exercise, reduced dementia risk by 25% when practiced with regular booster sessions.

How many minutes of brain training per day do I need?

Research from the ACTIVE trial suggests 15 minutes of focused cognitive training, 5 times per week, is effective for producing meaningful and lasting cognitive benefits.

Does CoDo work on Meta Quest?

Yes. CoDo is available as a free download on Meta Quest 2, Quest 3, Quest 3S, and Quest Pro. The VR version includes all four science-based cognitive training exercises plus social features.

Science-Based Cognitive Training