TOMOY

Training Of Memory Operations Yard

Short sessions, repeated. Working memory training.

No instructions needed. Five tasks to repeatedly challenge the limits of your ability.

Reverse Digits

Digit Span (Backward). Foundational training to hold and manipulate numerical sequences in reverse order.

Web App The science behind this → Digit Span Task
Ascending Digits

Digit Span (Ascending). Advanced training to process and sort incoming information in real-time.

Web App The science behind this → Ascending Digit Span
Dual-Task Reverse

Dual-Task (Reverse). The ultimate cognitive challenge, combining reverse recall with secondary tasks.

Web App The science behind this → Dual-Task Training
Filtered Digits

Inhibition (Forward). Training to selectively retain target digits while suppressing inappropriate information.

Web App The science behind this → Digit Span and Inhibitory Control
Transform Digits

Working Memory & Executive Function Combined Task. Apply a transformation rule to each digit and recall the converted sequence.

Web App The science behind this → Compound Cognitive Tasks

About Working Memory and This Site

1. What Is Working Memory

Working memory is the ability to hold information in mind while using it at the same time. Following a conversation while forming a reply, keeping track of a calculation in progress, holding the next step in mind while listening to instructions — it works quietly across many everyday situations.

Working memory has a limited capacity. In cognitive psychology, this capacity is thought to be connected to sustained attention and the ability to manage several things at once.

2. Five Apps

The apps are designed around the digit span task, a format that has been used in cognitive psychology for many years. They are not clinical assessment tools — they are a practice environment.

  • Backward: Recall digits in reverse order. Remembering while transforming creates a double load.
  • Ascending: Rearrange digits from smallest to largest before answering. Practice organizing information in your head while holding it.
  • Dual-Task: Do the backward task while responding to a second task. Adds the load of handling two things at once.
  • Inhibition: Answer only the target digits from the sequence. Practice ignoring what you don't need while keeping what you do.
  • Transform: Apply a rule to each digit and recall the converted sequence. The culmination of the series — updating, shifting, and inhibition all at once.

By gradually increasing the digit count and repeatedly pushing your limits, you can sustain a consistent challenge.

3. How to Keep Going

Short daily sessions of 5–10 minutes are the easiest way to build a lasting habit. Even a few minutes before a task can help warm up your focus.

After a while, progress may seem to stall. That doesn't mean you've stopped improving — it means your brain is searching for a better approach. Stabilizing what you can already do is the foundation for moving further.

4. About the Design

The apps are visually simple. Unnecessary decoration and animation have been removed so you can focus on the task.

Ads appear only at the bottom of the page. This keeps them from interrupting your practice.

The keypad layout has been adjusted to work comfortably on both phones and computers. Less friction with input means more focus on the task itself.

In-depth explanations of working memory, executive function, and how they shape everyday cognition.

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