What Is HashMemo?

Learn. Think. Put it into your own words.

HashMemo is a learning app designed to help you gain the knowledge and wisdom you need to navigate life—and strengthen your ability to think for yourself.

Explore a wide range of topics, including great books, history, economics, science, languages, work, and relationships. Each question invites you to pause, reflect, and put your thoughts into your own words.

Here’s an example of an activity

Short Insight Drucker wrote that effective people first decide what to stop doing. You cannot add more hours to a day. To start something new, you have to let something go.

Question What is something you already sense you should stop doing?

There is no single right answer. Even a few lines, or just one, is enough.

Make Knowledge Your Own

Each HashMemo activity follows a simple format.

Read a “short insight.” Reflect on one “question.” Write down what you think in your own words.

Knowledge does not truly become your own simply because you have learned it.

Why is it the way it is? What do you think about it? How does it connect to your life or work?

Learn. Think. Put it into your own words.

By repeating this process, knowledge gradually becomes part of the way you think, decide, and act.

Start with English

One of the themes isEnglish Studio.

It starts with basics such as the verb “be” and the simple present, with 10 activities at each level. Each activity combines a short explanation with a question, helping you create English sentences in your own words. HashMemo’s activity format works naturally with language learning.

You can start with English and, as you continue, discover other topics such as work, relationships, economics, and history.

Your Words Belong to You

The answers and notes you write in HashMemo are not visible to other users unless you choose to share them.

You do not have to write for anyone else. Think freely, for yourself, and record your thoughts in your own words.

HashMemo is designed to give you space for uncertainty, unfinished thoughts, and ideas that are still taking shape.

Think for Yourself—with AI

In the age of AI, finding information and getting answers is becoming easier than ever.

That makes the ability to think and make your own judgments more important than ever.

HashMemo’s AI companions, including Hassy, are not here to decide what your answer should be. They help you organize your thoughts, consider different perspectives, and think more deeply.

HashMemo is not about letting AI think for you. It is about thinking for yourself with AI.

That’s how HashMemo approaches AI.

I Am the CEO of My Own Life

Life is full of choices with no single right answer.

What will I learn? What kind of work will I do? Who will I spend time with? What will I value most in life?

In the end, these choices are yours to make.

That is why HashMemo is guided by a simple belief:

“I am the CEO of my own life.”

Gain the knowledge and wisdom you need to navigate life. Think for yourself. Make your own choices. That is the habit HashMemo is here to help you build.

Getting Started

If you only want to browse the prompts, you can use HashMemo for free forever. No registration is required.

Start by choosing a topic that interests you and engaging with a question. If you want to begin with English, try English Studio Level 1.

The app interface and activities are available in Japanese, English, Spanish, and Korean.