Literacy
EVI
Choose a topic, main character, emotion and AVI reading level. EVI creates a practice story you can read with your child. You can save or print the story.
- 3 free stories
- No ads
- Available in the App Store
Software with
social impact.
I’m Jolyon Oattes. With graimatter, I build software inspired by situations I experience myself or see around me. Reading with your child, keeping track of headaches or finding the right support: everyday things where a little help can be welcome. That is what I hope my apps can offer people and families.
cardiology
Health
When you have health problems, keeping an overview can be difficult. I build tools to record symptoms and find information again for a conversation with your healthcare provider.
visibility
Accessibility
Software should be clear and easy to use, including when seeing, reading or navigating takes more effort. That is why I pay attention to readable text, calm screens and straightforward controls.
menu_book
Literacy
With EVI, you create practice stories about topics your child enjoys. You can use them to practise reading together.
What I have built
Health & self-management
HeadYogi
With HeadYogi, you can complete a full headache entry in under ten seconds, including severity and medication. You can look back at your notes and share a report with your doctor.
- No account needed
- No ads
- Available in the App Store
How I work
I develop my apps in short rounds. In each round, I work on a specific improvement, test how it works and gather feedback. That helps me decide what takes priority in the next round.
Get in touch
Have a question about an app, want to share your experience or build something together? Feel free to send me a message.
Send a message