Baloo 2
Headings, buttons and big numbers
- Việt Nam, đẹp lắm! ExtraBold 800
- SIL Open Font License 1.1
- Source
- github.com/EkType/Baloo2
© 2019 The Baloo 2 Project Authors
Credits
Built on the work of many people and tools.
Puchi is made of open fonts, synthetic voices, AI-assisted art and open-source software. Here is everything we use, who made it, and under what licence. Thank you.
Last updated: 13 November 2026
Fonts
Both typefaces are open fonts under the SIL Open Font License 1.1, and we host them ourselves — nothing is loaded from a third-party server.
Be Vietnam Pro
Body text and lesson content
- Việt Nam, đẹp lắm! Regular 400
- Việt Nam, đẹp lắm! SemiBold 600
- SIL Open Font License 1.1
© 2021 The Be Vietnam Pro Project Authors
SIL Open Font License 1.1 → · Both were chosen because they draw every Vietnamese tone mark clearly, even at small sizes.
Voices
The spoken Vietnamese in Puchi — words, sentences and story lines in Northern and Southern accents — is generated with VieNeu-TTS, an open-source Vietnamese text-to-speech model.
VieNeu-TTS is used under the licence and with the credit its authors publish for the model version we use; we will list the exact version and terms here.
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Synthetic
These are generated voices, not recordings of real people.
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Reviewed
Every clip is listened to and approved before it is released.
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Two accents
Northern and Southern voices, at normal and slow speed.
Illustrations, mascot and logo
Puchi the panda, the logo and the illustrations were created with AI image-generation tools (the gpt-image family of models) and then cut, cleaned up, traced and assembled by the Puchi team.
Every image is approved by the product owner before it is used.
How we keep track
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1. Generate
An image model draws a concept from a written prompt.
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2. Clean up
We cut it into parts and fix edges and details by hand.
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3. Assemble
Parts are traced and put together into the final artwork.
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4. Record
We log the tool, the date and the prompt for every image.
Sound effects
The short feedback sounds were generated with ElevenLabs Sound Effects, then trimmed and level-matched by the Puchi team. They share one bamboo-xylophone sound, so right and wrong are told apart by melody, never by a harsh buzzer.
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Correct
two rising notes
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Try again
two soft falling notes
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Lesson complete
a joyful arpeggio
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Streak
a warm whoosh and flourish
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Unlock
a magical glissando
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Tap
a soft wooden knock
Software
This website is built with open-source software.
The Puchi apps and services use further open-source software under their own licences. We will publish the full list of third-party licence notices on this page as the apps are released.
Licences at a glance
| What | Made by | Licence |
|---|---|---|
| Baloo 2 (font) | The Baloo 2 Project Authors | SIL OFL 1.1 |
| Be Vietnam Pro (font) | The Be Vietnam Pro Project Authors | SIL OFL 1.1 |
| VieNeu-TTS (voices) | Its authors | As published by its authors |
| Mascot, logo, illustrations | Puchi team, with AI image tools | Part of Puchi; see the Terms |
| Feedback sounds | Puchi team, with ElevenLabs Sound Effects | Part of Puchi; see the Terms |
| Astro (website) | Astro contributors | MIT |
| Tailwind CSS (website) | Tailwind Labs and contributors | MIT |
| Phosphor Icons (website) | Phosphor Icons | MIT |
Something missing?
If you think your work should be credited here, or a credit is wrong, tell us and we will fix it promptly.
Email
support@puchi.io.vn
