15 fifteen

For IB Diploma students, their parents and their schools

IB subjects, fifteen minutes a day.

Most students who “can’t do maths” are missing a few building blocks, not the whole subject. Fifteen finds the exact one, fixes it in about two minutes, and follows the order your class is being taught in.

Start your free week I’m from a school

No test to start. No timers. No leaderboards.

Thursday · Maths

6-day streak

Today’s fifteen

✓

Warm-up

Gradient as rise over run

2

Lesson

Perpendicular bisectors

3

Teach it back

Explain it in your own words

Follows your class’s unit plan

Why it’s an easy addition

The IB is already full. Fifteen doesn’t add to the pile. It makes the pile lighter.

15 min

A day, then stop

Short enough to start on a bad day, with a 5-minute version when energy is low. Sessions end on time, by design.

In step

Follows your class, not a new syllabus

Fifteen follows the school’s unit plan, so practice is on the topic being taught now. Soon it will link to ManageBac and react to what teachers set.

Upload

Uses the tests you already haveComing soon

Snap a photo of a marked test and Fifteen turns the lost marks into the next few days’ practice. No extra worksheets.

Alongside

Works with what you use now

Keep your tutor, question bank and teacher. Fifteen fixes the basics underneath, so their time goes on teaching, not finding the gap.

Any screen

Phone or laptop, pen and paper

Do it on the bus or at a desk. Work it out on paper the way the exam expects, then answer line by line.

No test

Nothing to sit before you start

It starts gently at the right level, with a win in the first five minutes. Students sign up in a minute and invite a parent if they want to.

How it works

One daily fifteen, in three parts

1

Warm-up

Two minutes on the building block today’s topic rests on, so the gaps get fixed first.

2

Lesson and questions

One step per screen. Each step shows what to do, why it’s needed and what it builds on, with “I don’t understand” always there.

3

Teach it back

Explain it in your own words, on paper or out loud. If you can teach it, you know it.

Stuck? From stuck to fixed in about two minutes.

1 · Point

Tap the first step that stops making sense.

2 · Why or how?

A missing idea gets a picture and a real example.

3 · Check down

One quick question per building block until one comes back right.

4 · Fix

A short lesson and three practice questions on that block.

5 · Climb back

Rung by rung back to the original question, solved.

Who it helps

One app, three ways to win

For students

Stop feeling lost. Start feeling ready.

  • Small daily wins on the exact thing you were missing
  • “I don’t understand” at every step, with no judgement
  • Private: friends see “studying” or “done”, never your scores
  • No racing, no timers, no leaderboards
  • Plain English: tap any maths word for a simple meaning
  • Test sprint: three weeks out, the plan counts down to your test

For parents

Know how they’re doing, without the nagging.

  • See progress, or the lack of it, week by week
  • Find out in days, not when the mark comes back
  • An “ask them” question to start a calm conversation
  • Agree real rewards together, for effort, never grades
  • Your child signs up and invites you, so it’s theirs

For schools

Support every student, without extra marking.

  • Follows your own unit plan; ManageBac linkComing soon
  • Gap reports students can share with their teacherComing soon
  • Built for anxious students, ADHD and slow processing
  • Original content written for Fifteen and checked against the IB subject guides
  • A ready answer for learning support’s “which tools?” list
  • Free pilot for a class or year group

Built on how learning works

Not more hours. Better fifteen minutes.

Fifteen is built on the study techniques with the strongest evidence from classroom research, and leaves out the ones that only feel productive, like re-reading and highlighting.

Retrieval practice

Pulling it out of your head, not reading it again.

Little and often

Ideas come back over days and weeks, so they stick.

Feedback that explains

Every wrong answer says why, straight away.

Small steps

One idea per screen, at the student’s own pace.

Subjects

Maths: Applications & Interpretation SL

Psychology SL

Your other four subjects: coming

Each subject has its own gentle start and its own progress. The plan is all six of a student’s IB subjects in one app.

“When I try hard, I get bad grades, the same as when I don’t.”
An IB student, and the reason Fifteen exists. What he needed was small, daily, private wins on the exact thing he was missing.

Fifteen minutes. Starting tonight.

Join the pilot. Fifteen is free while the pilot runs, for students, families and schools.

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Schools: book a pilot call