Daily Math
10 questions a round. About 3 minutes.
For parents
Answer the math problems that appear on the blackboard. Tap the number keys, then tap “Enter”. That’s all.
The problems you find hard show up more often. Get several right in a row and you win a picture.
A drill for elementary-school arithmetic. A round is 10 questions and takes about 3 minutes. Addition, subtraction, multiplication and division — 42 types in all, including problems with a box (□ + 5 = 12).
Play now → Open the app → No sign-in needed
Tap the numbers, then tap “Enter”. That’s it. Your answer shows up big at the bottom right of the blackboard.
Addition, subtraction, multiplication and division — 42 kinds in all. Some problems use a box: □ + 5 = 12.
When you get it right on the first try, the mark depends on how fast you were.
The bar at the top of the blackboard shows how fast you are going. A wrong answer never gets an ✕ — if no mark appears, just think again.
Every 5 correct answers in a row, you win one picture. Your pictures go into the Collection — 58 in all.
Once you have a picture, it stays yours forever.
A “?” is a picture you have not won yet. You never know which one is coming until you get it.
The bar at the top shows how many you have collected so far.
The app remembers the problems you got wrong or answered slowly, and gives you more of them next time.
Leave it on “Auto” and it picks for you. Want to choose yourself? Use “Choose myself”.
Miss a problem twice and it shows you the answer, then brings that problem back 3 questions later.
How many you answered, how fast you were, and how many you got right — every day is recorded.
Play every day and your “day streak” keeps growing.
Answer with the number keys (0-9), or pick from 4 numbers if that is easier. You can also change how many questions come in a round, and turn sound and vibration on or off.
You can turn on “See answer” too. But looking is recorded as a wrong answer, and that problem will come back to you later.
No name, no password. Just open it and start.
Sign in with Google and your record is saved, so you can carry on from another device such as a tablet or a computer. Everything you did before signing in comes with you.
The app records which problems were answered wrongly or slowly, and weights the next round towards them. “Auto” is the default, so nothing needs to be chosen. You can also pick types by hand.
The range is split into three bands — Beginner, Intermediate and Advanced — and they do not overlap (choose Advanced and single-digit addition will not appear). Intermediate is the default.
The original app picked at random. Years of per-type results had piled up but were never fed back into what came next. This uses them.
Miss the same problem twice and the app shows the answer, then brings that problem back three questions later, so a child is not left stuck.
“See answer” is recorded as a wrong answer the moment it is used. In the original app, looking at the answer recorded nothing and moved on — skip all 10 and the day’s record stayed empty. Now it is recorded, and the problem comes back.
A wrong answer never shows an “✕”. It is the same glyph as the multiplication sign, and right under the expression it reads as “7 × 8 … × 12”. Instead, no mark appears, with a sound and a vibration.
Each day’s question count, average time and accuracy are kept. The 30-day chart shows the days kept up. Each of the 42 types is shaded by how weak it is — darker means weaker.
Red and green are not used as a pair. Colour vision differs from person to person, so the scale is shades of a single colour.
No name, no password — open it and start. Without signing in, the record is tied to the browser session.
As a guest, the record is lost if the browser’s data (cookies) is cleared. Sign in with Google to keep it. Everything played as a guest carries over to the account, and can be continued on another device.
Note that a guest record is not merged into an account that already has one (there is no right answer to which numbers to keep). One account is one child — for siblings, sign in with separate accounts.
The app itself is available in Japanese and English (the JA / EN switch in its header).
Every 5 correct answers in a row wins one hand-drawn picture — 58 in all. Once won, a picture never goes away. (The original faded them out after 40 days; that was dropped — there is no reason to take away what a child has collected.)
The marks work the same way: under 4 seconds gets a thumbs-up, under 10 seconds a flower, slower but correct still gets a circle. Speed only counts on a first-try answer — a correct answer after a miss gets a different-coloured circle, however fast.
More apps from the same team
The sister apps to Daily Math
Daily Kanji
An app for learning to read and write kanji. Just like the math app, the ones you find hard come up more, and a streak of correct answers wins a picture.
A kanji drill built the same way. It covers all 1,026 characters and about 5,750 questions of school years 1–6, in both reading and writing. Weak spots come up more, and no sign-in is needed, the same as this app.
Daily Proverbs
An app for learning what proverbs mean and when to use them. Answer the blackboard by picking one of four cards, and the ones you find hard come up more.
A drill covering 130 Japanese proverbs, asked in three ways — fill in the blank, match a meaning, or match a scene — and answered by picking one of four cards. A round is 10 questions, about three minutes. Weak spots come up more, and no sign-in is needed, the same as this app.
Ready to try? Try a round together
Play now → Open the app →No name, no password. Open it and start.
This page is part of the development docs. The screens are work in progress and show sample data.