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Everyone
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About this app

This is a support app for those who work on intermittent fasting under the guidance of the JIF Association, as well as ambassadors, advisors, and counselors of the Association.

Specifically, explanations using video teaching materials and PDF files (knowledge of nutrition, specific methods of intermittent fasting, before and after, etc.) as support tools for those who work on intermittent fasting. In addition, ambassadors (people who promote public relations and dissemination activities), advisors (people who have knowledge of intermittent fasting and who can give advice), counselors (people who actually work on fasting), specific support and guidance. You can always see materials such as educational videos and presentation files for those who can.

Intermittent fasting is famous for 16-hour fasting, but if you want to lose 10 to 20 kilograms and change your constitution in the long run, it is more effective to do 2 fasting a week than 16-hour fasting.

That is, eat as usual for 5 days in a week (alcohol is OK), choose a non-consecutive day only 2 days a week, and have the calories limited to 500 to 700 kcal on that day. It is.
In order to continue this method, a counselor (leader) is absolutely necessary, and the counselor (leader) will guide the client to achieve the goal using this app.

First of all, I would be grateful if you could download the app and take on the challenge of the Ambassador Test (free of charge).

If you want to acquire the knowledge of intermittent fasting (5: 2 fasting) by this test and try it from there, please try it.
Support app that provides intermittent fasting
Updated on
Aug 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    App info and performance
  • This app may collect these data types
    Personal info, App activity, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

・軽微な不具合修正
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Everyone
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App support

About the developer
ASTOSYSTEM CO.,LTD.
support@asto-system.com
1-4-7, KAJICHO HIKOTABLDG.2F. CHIYODA-KU, 東京都 101-0044 Japan
+81 70-5588-5010