As era names have changed from Meiji, Taisho, Showa, Heisei, and Reiwa, it has become difficult to instantly determine the age of a person or the year of an event.In the Showa era, if you were born in XX Showa, you could easily tell how old you were by saying, ``Its XX Showa now, so if you subtract it, youll be XX years old. However, since there are multiple era names, calculating the year becomes very confusing.Thats where this app "Age Quick Reference Chart" comes in handy!◎What you can do with the age chartTap the era name or date to switch. When switched, it will automatically calculate your age and year.1. You can tell your age from your era name and birthday.2. The Western calendar can be determined from the era name and year.3. Know the age of your pet (dog, cat, rabbit, small bird).4. The year of school admission and graduation can be determined from the date of birth. (Resume information)5. You can find out your wedding anniversary from the year you got married.6. You can find out your childs celebration date (approximate) from the date of birth.7. You can tell the celebration of longevity from the year you were born.8. The date (approximate) of the memorial service can be determined from the date of death.9. You can see how many days have passed with the date and date.10. You can tell the day of the week from the year, month, and day.11. You can tell the zodiac sign from the era name.12. I can understand the name of age.13. An unlucky year can be determined from the year of birth.14. The lucky direction of the year can be determined from the name of the era.15. You can find out your zodiac sign from your birthday.16. You can simulate the age of the parent and child based on the year of birth.17. You can calculate elapsed days and anniversaries from your birthday.18. You can tell the lunar calendar from the era name.19. Rokuyo (Daian, Akakuchi, Sakisho, Tomobiki, Sakime, Butsumetsu) can be determined from the era name.You can also see the conversion (comparison) of other era names and a list of era names.◎A little “consideration = commitment” in the age chart1. Consideration has been given to the new era name Reiwa.It also supports the new era name Reiwa, so you can use it forever.2. Consideration was given to the elderly.As a developer myself (born in the mid-Showa era), I made the fonts to be tapped larger because I thought it would be used more often by people born before the Showa era who have difficulty seeing due to presbyopia. We have also made the operation method intuitive and simple so that anyone can use it easily.3. Consideration was given to Osaifu.At first, we considered whether to make it a paid app, but we decided that it would be better to use it for free, so we decided to make it a free app that is powered by advertising revenue.