Vanko — Terms of Use

Last updated: 19 October 2026 · Applies to the Vanko mobile app

Vanko is free to learn with: every child gets the whole reading path, one session a day, with every hint and both voices. The optional Family plan adds more practice and tools for parents; it never locks a lesson.

1. Agreeing to these terms

By installing or using Vanko you agree to these terms. If you do not agree, do not use the app. Vanko is published by BrotherAI ("we", "us"). These terms come in addition to the terms of the store you installed from.

2. Who sets it up

Vanko is made for children aged 4 to 8. It must be installed and set up by a parent or another adult who cares for the child, who accepts these terms on the child's behalf and decides on any purchase, the anonymous statistics and the microphone. Purchases, settings and links sit behind a parental gate.

3. What Vanko is

Vanko teaches a child to read Vietnamese in short daily sessions: sounds, rimes and tones, building syllables, reading words, sentences and stories, then passages with questions. It follows the order of the lessons of the grade 1 reading book used in Vietnamese schools, and the way schools spell a syllable aloud. The voice is synthetic, made in advance and checked by machine.

It is practice, not a replacement for school, a teacher or a parent, and we do not promise any particular result. If a word, a story or a voice clip looks or sounds wrong to you, report it in the parent area or write to us, and we will fix it.

4. What is free

Every child gets one full session every day, for free and for good, along the whole path, with every hint, the slow spelling and both voices. A child who never has the Family plan can still reach every lesson. Brothers and sisters each get their own profile at no cost.

5. The Vanko Family plan

The Family plan is optional. It adds more practice after the day's session, within the daily play time you set; a shelf of extra stories for every lesson; the reading history of the minutes you listen to your child read; and printable handwriting sheets for each lesson. It can be bought by an adult in the parent area as:

Prices are shown in the app, in your currency, as the store gives them. Subscriptions renew automatically at the end of each period unless you cancel them in your App Store or Google Play account settings at least 24 hours before the period ends; cancelling keeps the plan until the end of the period already paid for. If you do not cancel during the free trial, the yearly subscription starts at the end of it, and the parent area shows the day it ends.

If the plan ends, the child keeps all their progress, stickers and pictures, the reading history is hidden but not deleted, and the free daily session stays as it was.

6. Price changes

If we change the price of a subscription, the store will tell you and, where its rules require, ask for your agreement before any renewal at the new price.

7. Your child's data

A child's progress is stored on your device, and in your own iCloud on Apple devices where iCloud is on, as the Privacy Policy explains. We cannot recover it: if the app is deleted or the device is lost, whatever your own backup did not keep is gone.

8. Acceptable use

Do not try to reverse engineer, decompile or tamper with the app beyond what your local law expressly allows, and do not try to get the Family plan without paying for it. The app and its content (lessons, stories, pictures, voices and text) belong to us or to those who licensed them to us. You may use them for your family's own learning, not copy or sell them.

9. Availability and changes

We may change, add or remove lessons and features in future versions, and we may stop publishing Vanko. If we stop, we will take no further subscription payment, and the version on your device keeps working as it is.

10. Disclaimer of warranties

Vanko is provided "as is" and "as available", without warranties of any kind, express or implied, including fitness for a particular purpose. We work to keep every lesson, story and voice clip correct, but we do not promise that the app is free of errors.

11. Limitation of liability

To the fullest extent the law allows, we are not liable for indirect, incidental, special or consequential damages, or for lost data, arising from the use of Vanko. Our total liability for any claim is limited to the amount you paid for the Family plan in the twelve months before the claim.

Nothing in these terms limits a liability that the law does not allow to be limited, or any right you have under the mandatory consumer law of your country.

12. Changes to these terms

We may update these terms. A material change will appear on this page with a new "Last updated" date before the version it applies to ships. Using the app after that means you accept the updated terms.

13. Governing law

These terms are governed by the laws of Vietnam, without regard to conflict-of-law rules. This does not take away any protection you have under the mandatory consumer law of the country you live in.

14. Contact

brotheraicompany@gmail.com