BrainWave by Sazinga
Parent portal · Android app

Reading they choose.
Rewards they earn.

Where reading takes off.

BrainWave wraps points, stars and streaks around the books your child already reads — story books and school work both count. You write the lessons, set the tasks and decide what every reward costs.

Sign in to the parent portal Get it on Google Play
Sign in with Google · Free to use · No subscription
A mother and her daughter sitting together on a sofa, reading a lesson from a tablet
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+15 stars Chapter 4 quiz — 3 out of 3 right

Built around one idea

Every reading app decides what your child reads. BrainWave doesn't.

A pile of well-thumbed story books

Any book, any lesson

Paste a chapter, import a markdown file, or draft one with AI. Fiction they love and the worksheet due Friday feed the same reward system.

A girl at her desk holding a tablet, a notebook and a stack of books beside her

Rewards that mean something

Points, stars and streaks — earned by finishing a short comprehension quiz, not by tapping through screens. You decide what each quiz is worth and what those points buy.

A mother and daughter sharing an open book on the sofa

Your child never signs in

You get an account. Your child is a name you add — no email, no login, no birth date, no photo. No ads and no analytics on anything they see.

How it works

A browser, a Google account, and about five minutes to set up.

Sign in and add your family

Open the parent portal, sign in with Google, and name your household. Add your children, and invite the other parent with a link — you both get the same view.

Add something to read

Paste a chapter, import a markdown file, or chat with AI using your own free key to draft a lesson. Nothing is published until you say so — you review every word.

A quiz is written for you

AI drafts multiple-choice questions from the lesson text, pitched at the age you set and spread across the whole piece rather than one paragraph of it. Keep the ones you like, edit any of them, write your own, or ask for more.

Set the tasks and the prices

Decide what earns points — reading, homework, practice — and what those points buy: screen time, a toy, whatever you agreed on. You set every number.

They read, quiz, and earn

Lessons land on your child's device and keep working with no signal. A finished quiz is marked and paid straight away; a chore that needs your eyes waits in your review queue until you approve it.

You set the rules and the prices

A quiz marks itself and pays out the moment it's finished, so a child isn't left waiting for a grown-up to find their phone. Everything else is yours: a chore comes to your review queue when you've set it to need your eyes, and no reward is ever spent until you approve it. AI can draft and suggest — it never decides, and it never pays.

Open the parent portal

What we can and can't see

A privacy promise that hides its edges isn't one. Here are ours, in plain language.

What we never ask for

  • An account, email or login for your child
  • Your child's birth date, photo or contacts
  • A payment method — there's nothing to pay
  • Location, contacts or your address book
  • Any advertising or analytics on a child's screen

What our server does hold

  • Your name and email, from Google sign-in
  • The lessons and quizzes you write
  • Your children's display names
  • Their answers, scores, points and rewards
  • Your AI key, encrypted
This changed, and we'd rather say so. Earlier BrainWave kept everything encrypted on your own devices, and our server genuinely could not read it. Running lessons, tasks and rewards across two parents and several devices meant moving that to accounts on a server we operate — so we can now read the lesson text you write and your children's progress. What we gave up in return is listed on the left, and it is the part we won't move: no ads, no analytics on a child's screen, nothing sold or shared, and no account for your child. When you use the AI features your lesson text goes to the provider under your own key. We never send your children's names, answers or progress to any AI.

Getting in

The portal is open. Everything runs in your browser — there's nothing to install to start.

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Sign in with Google

Use the Google account you want to manage your household with. The first parent to sign in creates the household; the second joins from an invite link you send them.

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Two apps, one household

Run the parent side on your phone, or the same portal in any browser. Your child uses the BrainWave app on their own tablet, paired by scanning a QR code you show them — and a lesson keeps working once it has arrived, with no signal. Get it on Google Play.

💸

No subscription, ever

The AI runs on a free key you create in a few minutes, and it's optional — you can write every lesson yourself. We don't charge to read with your own child.

Sign in to the parent portal

Questions parents ask

The things worth knowing before you set it up.

Is BrainWave free?

Yes. There is no subscription and nothing to buy inside the app. The AI features are optional and run on your own API key from a provider you choose — Google Gemini, Groq, OpenRouter, Cerebras or Anthropic — most of which have a free tier. You can also write every lesson yourself and never add a key at all.

Does my child need an account?

No. Only a parent signs in, with Google. Your child is a name you add inside your household: no email, no password, no birth date and no photograph. Their tablet joins by scanning a QR code you show it from your phone, which pairs the device without creating an account for them.

What can BrainWave see?

The lessons and quizzes you write, your children's display names, and their answers, scores and points — stored in plain text on our server, so we can read them. We show no advertising anywhere, run no analytics or tracking on any screen a child sees, and never sell or share anything. The privacy policy lists every field and why it exists.

What does the AI do, and what does it see?

It drafts lesson text and multiple-choice questions when you ask it to. It receives the lesson text and the instruction you typed, under your own provider account. It never receives your children's names, answers, scores or progress, and it never decides anything — every draft is shown to you and saved only if you accept it.

Does it work without internet?

A lesson your child has already opened once keeps working with no signal — it is saved on the tablet and can be read anywhere. Finishing a quiz needs a connection, because the points are awarded by the server.

What age is BrainWave for?

Roughly six to twelve. You set an age band per lesson, which is what the AI pitches its language to, and the child's side is designed for the younger end of that range — every icon carries a word rather than expecting a six-year-old to decode a glyph.

Can both parents use it?

Yes. Invite the other parent with a link and you both see the same children, lessons, tasks and approvals. If one of you later closes their account, the household stays with the other.

How do I delete everything?

In the parent app, go to More and then Delete account, and confirm by typing your own email address. It happens immediately, with no waiting period. If you no longer have the app installed, the account deletion page explains how to ask us by email.