Making girls' health make sense.
Girls' don't need 'more' health information. There's already a LOT of it. We need to get better at translating it into something that actually makes sense in the context of real life.
There's a gap between: “Oestrogen fluctuates throughout the menstrual cycle” and “Why did I feel amazing three days ago and now I want everyone to stop speaking to me?!”
Girls don't always have the words.
Parents don't always have the answer.
Schools don't always have the resources.
Support for Girls 8-16
From her first period to her latest "is this a thing?!" moment. Periods, puberty, hormones, body image and everything in between, explained through games, girl talk and real science that actually makes sense.
Support for Parents
& Carers
A space for understanding what she's going (growing) through. Support for the tricky topics and knowing where to turn when something needs a little more support.
Support for Schools
& Teachers
The lesson planning bit? We've got that covered. Deliver statutory RSHE and health education in an enaging, interactive, and safe way6x Ready-to-teach, interactive health education packs to use alongside your
The gap between “they covered it” and “I get it”
They taught the class, but did it click?"
From her first period to her first day at secondary school, changing friendships, teenage hormones and everything in between. Body OS by Rerein makes growing up a little easier to understand, for girls aged 8 to 16 and the people growing alongside them.
“Is this normal?”
A safe place to explore periods, hormones, body changes & body image.
Meet Body OS by Rerein 📱

POV: you have just had the biggest software update
Also known as puberty. Body OS turns all the new settings, changes and surprise notifications into something she can actually understand.

The Girls Glossary
The words she hears at school, online or in a doctor’s room, translated into language that makes sense in actual girl world.

Hormone HQ
Meet the hormones running the group chat, the messages they send and why her mood, skin, energy or appetite can suddenly switch up.

From textbook terminology to girl talk
She gets the proper science, the translation and the easily missed real life bit, so she can understand what a term might actually mean for her.

SOS chat search
For the “I need to know this right now” moments. She can type what is happening and find the part of Body OS that can help her make sense of it.

The Thought Translator
For when one thought starts sounding suspiciously like a fact. She can slow it down, look at what is underneath it and find a kinder way to speak to herself.
Free support for the stuff nobody properly explains
Pick your current “wait, what?” and let’s figure it out together.
Free interactive tools and resources for the body stuff, life stuff and awkward stuff everyone assumes and expects you to already know.
Girls Glossary
A list of words nobody explained properly, translated into what they actually feel like. "
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Hormone HQ
Meet the hormones behind moods, growth, skin, periods, and more.
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Eating Disorder Support
Whether you’re 14 and drowning in school and social media or 34 and untangling your 'healthy era' this space is for you.
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