Gensogoyomi
One element and one equation, every day.
A daily chemistry calendar that takes one to three minutes a day. Each day, open the card for today's element, answer a quiz, and balance a chemical equation. The app is in Japanese only: all cards, quizzes and menus are written in Japanese.
App StoreComing soon
iPhone, iOS 17 or later
Free
Japanese only
Daily flow
Four steps make up one day.
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Today's Element
Read how the element was discovered, where its name comes from, where it is used, and some trivia
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Today's Quiz
One question with four options about the element, followed by an explanation
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Today's Reaction
Set the coefficients so the atoms match on both sides. Three tries
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Result and Share
See your result and streak, and share it as text
Features
Cards for all 118 elements (discovery, name origin, uses, trivia)
137 chemical equations that start from the basics and get harder over time
An element collection that fills in on the periodic table. You can reread any card you have collected
Everyone gets the same puzzles on the same day. The day changes at midnight on your device's clock
Content is built into the app, so it works offline
Streaks to help you build a daily habit. The daily reminder arrives only when you turn it on, at the time you choose
No account required. Your records are stored only on your device
Free to use
Download
Coming soon to the App Store. Requirements: iPhone with iOS 17.0 or later. The app is in Japanese.