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Licenses and notices

Last reviewed October 26, 2026

Withya, the website and the apps, is built partly on work other people gave away. These are the notices that work asks us to carry, along with a note on the reference data the apps use and on what belongs to Withya.

Typefaces

Both typefaces are served from this domain, and both are licensed under the SIL Open Font License, Version 1.1. The full license text is published alongside each font file and linked below.

Newsreader

Copyright 2020 The Newsreader Project Authors (https://github.com/productiontype/Newsreader).

This font software is licensed under the SIL Open Font License, Version 1.1. Read the full license: /fonts/Newsreader-OFL.txt.

Used for: headings and display text.

Plus Jakarta Sans

Copyright 2020 The Plus Jakarta Sans Project Authors (https://github.com/tokotype/PlusJakartaSans).

This font software is licensed under the SIL Open Font License, Version 1.1. Read the full license: /fonts/PlusJakartaSans-OFL.txt.

Used for: body text and interface.

The SIL Open Font License permits free use, study, modification and redistribution of the fonts, including bundling them with software and serving them from a website, provided the fonts are not sold on their own and the copyright and license notices travel with them. The license and its FAQ are published at openfontlicense.org.

Neither the Newsreader project authors nor the Plus Jakarta Sans project authors endorse Withya, and neither is connected to it.

Site software

Astro

Copyright the Astro Technology Company and Astro contributors ( https://github.com/withastro/astro).

Licensed under the MIT license. Permission is granted, free of charge, to any person obtaining a copy of the software and associated documentation files to deal in the software without restriction, subject to the copyright notice and permission notice being included in all copies or substantial portions of the software. The software is provided as it is, without warranty of any kind.

Used for: building these pages into static HTML.

Astro and the packages it depends on run only while the site is being built. Their code is not shipped to your browser.

The Withya apps

The Withya apps are also built partly on open-source software, under licenses such as the MIT, Apache 2.0 and BSD licenses.

The Newsreader and Plus Jakarta Sans fonts above, under the SIL Open Font License, are bundled in the apps as well as served from this website. The apps also bundle one more typeface, which this website does not load.

Atkinson Hyperlegible Next

Created by the Braille Institute of America, Inc. Copyright the Braille Institute of America, Inc. and the Atkinson Hyperlegible Next project authors ( https://github.com/googlefonts/atkinson-hyperlegible-next).

This font software is licensed under the SIL Open Font License, Version 1.1. Read the full license: https://openfontlicense.org/open-font-license-official-text/.

The Braille Institute of America does not endorse Withya and is not connected to it.

Used for: text in the apps.

Growth reference data

The growth charts and percentiles in the apps use, as reference data, the WHO Child Growth Standards published by the World Health Organization and the CDC 2000 growth charts published by the US Centers for Disease Control and Prevention. Withya calculates percentiles from these references and the measurements you enter. They are reference values, not a diagnosis.

These references remain the work of their publishers. Our use of them does not mean that the World Health Organization or the Centers for Disease Control and Prevention endorse Withya, its apps or any result shown in them, and neither is connected to Withya.

What this website loads

No JavaScript framework, no advertising tag, no hosted font service and no embedded media player. Fonts, images and styles are served from this domain. The only third-party script we add ourselves is Google Analytics, which loads after you accept our cookie notice. That keeps this page, and the rest of the site, close to a performance and privacy default.

Withya's own work

The Withya name, the wordmark, the W mark, the app icon and the words Withya writes for this site and the apps belong to Withya and are not covered by the licenses above. The app store badges are the property of Apple and Google and are used under their respective brand guidelines.

Some materials in the apps are licensed from others. We do not claim ownership of material that belongs to someone else, and material licensed from others remains the property of its owners.

Store badges

App Store and the Apple logo are trademarks of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC. They appear here to point to the stores and imply no endorsement.

Corrections

If a notice on this page is wrong, out of date, or missing something we should be crediting, write to [email protected].

Withya

Last feed. First laugh. Same place. A shared baby tracker and journal for your child's first five years.

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