A. We prioritize user privacy and completely avoid collecting personal data. Furthermore, by removing the "cognitive load" associated with account registration and password management, we provide an environment where you can focus entirely on training the moment you open the site.
A. To cover server and domain maintenance costs, allowing us to keep this platform entirely free. To ensure minimal disruption to your cognitive training, ad placement is strictly restricted to the bottom banner area of the screen.
A. Yes, it is a general-audience app available for a wide range of age groups to use at their own risk. It is not specifically targeted at children under 13. Because it relies on working-memory tasks, you can apply a cognitive load tailored to your individual span, whether you are a student, an adult, or a senior.
A. We recommend progressing in this order: Reverse Digits → Ascending Digits → Dual-Task Reverse → Filtered Digits → Transform Digits. Reverse Digits is your entry point into working-memory training—holding information while reversing its order. Ascending Digits adds the more advanced challenge of sorting multiple items by magnitude. Dual-Task Reverse trains divided attention by combining reverse recall with a simultaneous cognitive task. Filtered Digits engages inhibitory control by requiring you to suppress irrelevant digits and recall only the ones that pass the filter rule. Finally, Transform Digits is the culmination of the series—a combined working-memory and executive-function task in which you apply a transformation rule to each digit and recall the converted sequence, simultaneously engaging all three of Miyake's common executive functions: updating, shifting, and inhibition.
A. For feedback, feature requests, or bug reports, please visit the Contact page.