Digital Sales

Who runs this site?

Digital Sales is operated by the Digital Sales editorial team. The site began in 2020 and publishes Japanese resources and free tools for sales, marketing, AI, digital transformation and customer success. This English section offers a selection of our chart tools.

How we build tools

We explain what each tool does, how it uses your data and where its limits are. Before publishing changes, we check example results, boundary cases and exported files. Each tool shows its update date and links to relevant sources.

Charts are created in your browser. You can try them without registering, paying or uploading your chart data to us. Read about data and analytics.

Report a problem or suggest an improvement

Please use our contact form (Japanese). Include the tool name and what happened. Do not send confidential chart data. The form uses HubSpot to process your message.

Using the tools

Individuals and businesses may use these free tools for work. Check the result and its assumptions before using it in an important decision. Read our terms of use for details.