The AI that knows your child

Every mom already asks AI. No AI knows your child — firstk does.

Ask anything about your child's development and get an answer grounded in their own assessment — not generic advice. Then one 2-minute step, every day.

AI that knows your child · free · no card · 5 minutes

Maria's mom · 2y 4m
Maria bit a friend at school today. How should I handle it?
A generic AI

Biting is common at this age and usually passes. Every child develops at their own pace. Stay calm, firmly say “we don't bite,” and offer a toy instead. If it continues, talk to your pediatrician.

kfirstk — knows Maria

Language is where Maria needs you most right now — her assessment scored 40% there — so the biting is likely her way of saying something she doesn't have words for yet. Instead of just “no biting,” name the feeling for her: “You got upset because you wanted the toy.” Tomorrow I'll send you a 2-minute game to build on it.

Don't believe it? Paste the same question into ChatGPT and compare.

Illustrative product example.

Why it knows your child

What makes every answer about your child

The assessment and the daily plan aren't the product — they're how the AI learns your child.

1

The assessment teaches the AI

A free 5-minute assessment maps 6 developmental domains (based on Denver II). That's how the AI gets to know your child — not children in general.

2

Ask anything

Biting, sleep, tantrums at the store. Every answer cites what's specific to your child — their domains, their age, their history.

3

A daily nudge

One 2-minute suggestion a day, the kind only someone who knows your child could make. Never just another to-do list.

The difference, side by side

Same question. Only one knows your child.

Théo's dad · 3 years
My son still won't give up the pacifier. Should I take it away?
A generic AI

It's best to drop the pacifier by age 3 to avoid dental effects. Do it gradually and with plenty of reassurance.

kfirstk — knows Théo

Théo is very strong in social-emotional skills, but speech is where he needs you most — the pacifier may be competing with his babbling. Try trading it for face-to-face talking moments. I'll send you a script today.

Don't believe it? Paste the same question into ChatGPT and compare.

Alice's mom · 18 months
She throws big tantrums at bedtime.
A generic AI

Tantrums are normal at this age. Keep a consistent routine and clear limits at bedtime.

kfirstk — knows Alice

Alice is in a gross-motor growth spurt (her assessment showed 88%) — right now her body wants to move and resists winding down. Burn that energy 40 minutes earlier with the activity I suggested on Tuesday.

Don't believe it? Paste the same question into ChatGPT and compare.

Your child's brain will never learn this fast again

In the first years of life, the brain forms more than a million new connections per second — the fastest pace it will ever reach. Every game, every word, every cuddle becomes structure. It's not about doing everything perfectly, or rushing. It's about seeing the best window the two of you will ever have — while it's open.

Source: Center on the Developing Child, Harvard University.

Pricing

Start free. Keep going for less than a coffee a day.

Cancel anytime.

Free

The first step, free forever

$0

  • Full profile across all 6 domains, read by the AI
  • Your child's profile radar
  • Personalized narrative letter
Chat with the AI — free
🎉 Save 50%

firstk Plus

$7.42/mo

$89/yr · save $91

  • Personalized weekly AI activities
  • AI Coach specialized in your child
  • FADA milestones + achievements + gamification
  • Progress tracking by domain

PRO

For moms with more than one child

$16.58/mo

$199/yr

  • Everything in Plus, plus:
  • Follow up to 3 children in one account

🛡 Unconditional 7-day guarantee — if you don't love it, we refund 100%. No questions asked.

Want to feel it first? Let the AI get to know your child →

Mothers already living the difference

★★★★★

I felt lost. I compared Theo to the babies from the maternity ward and froze with anxiety. The assessment showed me exactly where he was and what to do today, not "someday." In three weeks he was sitting up steadily. For the first time I knew I was truly helping.

CACamila Andrade
Theo (8 months)
★★★★★

Helena didn't point, didn't imitate sounds, and the pediatrician just said "each child in their own time." I wanted to do something concrete. The progressive exercises were a turning point — within a month she started pointing and saying her first syllables. I cried.

JPJuliana Prado
Helena (1 year 2 months)
★★★★★

Davi had tantrums that left me exhausted and guilty. The social-emotional part taught me that it was development, not a "badly behaved child." The regulation exercises cut the meltdowns in half. I got my patience — and my bond with him — back.

RVRenata Vieira
Davi (3 years)
★★★★★

Miguel walked late and I felt like the worst mother in the world. The assessment showed that what he lacked was a base of balance, not "strength." We followed the steps and he walked within two weeks. The difference is having a path, not just a problem.

AFAline Ferreira
Miguel (1 year 8 months)
★★★★★

Enzo was "too quiet" and no one took me seriously. Tracking by area showed me that his language really was delayed and what to do about it. Today he says "mama" the right way. I feel heard and capable.

LCLarissa Cunha
Enzo (1 year 5 months)
★★★★★

We tried expensive, disconnected therapies. Here everything connects: motor, speech, cognition, emotion. For the first time I had a whole map of my son, not scattered pieces. I saved money and, above all, precious time.

DSDaniela Souza
Pedro (3 years)

Frequently asked questions

Do I have to pay to use the AI?

No. You start free: answer 5 minutes about your child and chat with the AI right away, no card. The full plan is optional, whenever you want.

How does the guarantee work?

Try Plus for 7 days. If it's not for you, one email gets you a 100% refund — no questions, no forms.

Can I cancel anytime?

Yes, in two clicks from your account. You keep access until the end of the period you've paid for.

What's the difference between monthly and annual?

The features are identical. The annual plan costs half as much per month and locks in your price.

What ages is it for?

From birth to about age 3 — the first 1,000 days, when the brain develops fastest. The plan adapts as your child grows.

Is payment secure?

Yes. Payments are processed by Stripe, the same infrastructure behind millions of businesses. We never see or store your card.

Start now

Meet the AI that knows your child.

Five minutes, free, no card — and you'll see the difference.