"Sato-san " tells you the calories of PET bottled beverages by the number of sugar cubes. This iOS app, which has been a hot topic around Twitter since the middle of last month, has appeared on the App Store.

■ How does it work?

An app that allows you to visually understand "Don't drink anymore today!" Accumulates and records the sugar intake (1 day's worth) from the user's PET bottled beverage. Specifically, the WHO recommended daily sugar intake of 25 grams is set as the "standard value", and does it exceed that? Is displayed so that you can see at a glance.

■ How do you use it?

To use, scan the barcode of the PET bottled beverage. Then, the name of the drink and the amount of sugar contained will be displayed. For example, if you scan the barcode of ITO EN "Raw Orange Tea", the calorie display screen will be displayed.



Tap "OK" here. Then, on the next screen, how many sugar cubes are there and what percentage of the "standard value" is? It is a mechanism that displays.

By the way, it seems that the calorie of one sugar cube is roughly set to 16.2 kcal.

■ Is it accurate?

To check the accuracy of the app, I tried "Sato-san" with some bottles of drinking water.


First, scan Suntory's "oolong tea" with the app.


It was displayed as 0 sugar cubes. Suntory "Oolong Tea" is a sugar-free beverage, so it's natural, but it's a little fun.


Then check Asahi's "Calpis Soda" and "Dark Calpis". It is displayed as 11.1 and 18.4, respectively.



"Calpis Soda" has 180 calories. Dividing this by the 16.2 kcal mentioned earlier gives 11.1. You can see that the display of 11.1 pieces by the "Sato-san" app is accurate.


"Dark Calpis" has 300 calories. Divide this by 16.2 kcal to get 18.5. Since the number displayed in the app is 18.4, it can be said that it is within the margin of error.



By the way, the total number of sugar cubes at the time of drinking two bottles of "Calpis Soda" and "Dark Calpis" is about 30. According to WHO standards, the daily sugar intake is about 6 sugar cubes, so only 2 sugar cubes have reached the sugar intake for 5 days.

■ The display may not be correct

Even if you scan the barcode with "Sato-san", neither the product name nor the calories may be displayed. Also, although the product is displayed, the calories are not correct? There is also something that seems to be.

This is probably because the calories displayed by "Sato-san" were manually entered by someone. The calories of beverages that no one has registered yet will not be displayed, and incorrect numbers will be displayed for beverages that have been entered incorrectly. It is a phenomenon similar to that that the song title of the CD automatically acquired by iTunes is different from the album display.

For example, Ito En's "Raw Orange Tea" did not display calories at the start of this verification (it was displayed at the end. Thank you to those who registered).

Also, Suntory's "Craft Boss Black" has 0 calories, but it is displayed that it contains sugar equivalent to 1.3 sugars.


Probably the result of being mistyped as another product in the "Craft Boss" series, but I couldn't find a way to fix it from the app.

■ However, it is an epoch-making app!

Although there is room for improvement as described above, this is a groundbreaking app. This is because you can scan every time you drink a PET bottle drink and switch the drink to sugar-free when the sugar cube exceeds 5.

It's great to be able to manage calories with this ease. If you are concerned about sugar intake, why not install it?