Ten minutes a day, and you can see what it bought

What you set up once

• One account holds one child on Free, or up to four on the Numbula plan. Siblings share the account, never the progress.
• Set a daily cap and a quiet time for each child. Numbula closes itself at the cap and will not reopen until the next day.
• Set extra time, declutter mode, audio, larger text, dyslexia-friendly letters, high contrast and reduced motion for each child. All of it is free on every plan.
• Placement takes sixty seconds and happens once. After that Numbula moves your child along on its own.

What you see each week

• Which facts are secure and which are slipping, written out: 14 − 9, 8 × 4, 6 × 3. Not a percentage.
• Median answer time, and what it was a month ago.
• Days practiced, counted up. There is no streak to break, so a missed Tuesday costs nothing.
• One line of advice per child that names the step they are missing, not the topic they are on.

What to do at home

• The weekly advice is written to be said out loud in a car or a grocery store line. It is usually one question repeated, not a worksheet.
• If you want paper, sheets for chapters 1 to 4 are free. The Numbula plan gives you a sheet of any stage, and one that starts from the facts that child missed or was slow on lately.
• You do not need to know the method yourself. Every sheet prints the strategy, and the answers are on page two.
• Ten minutes is the whole ask. Numbula tells your child to stop, and it means it.

What your child cannot do

• Buy anything. There is no shop, no coins for sale, and no ads of any kind.
• Be found by a stranger. Crews are invite only. Other children see only a ship name Numbula made up, never a real name.
• Message anyone. Numbula has no chat, no comments and no profile text.
• See a price. A locked chapter tells them to ask a grown-up and shows no button.

What it costs

Free, forever

The free part of every Heartbeat Kids app. In Numbula: chapters 1 to 4, stages 1 to 19, and their printable sheets. One child, every accessibility setting, one crew.

Numbula, $3.99 a month or $43.99 a year, one month free

All of Numbula: all eight chapters, through the times tables to 12 × 12, up to four children, sheets for every stage, full history, and crews you run yourself.