VitaChart

Why I started building it

For years, my wife and I have used the Creighton Model to chart her cycle, with the guidance of a FertilityCare practitioner and a NaProTechnology doctor. VitaChart grew out of that part of our family life and my interest in women’s health and natural fertility.

I wanted a simple place to keep daily observations, see them together and prepare the questions we take to consultations. That is where I started: a diary that is easy to keep and useful to review with the people accompanying us.

A record for the next consultation

The diary brings together observations of sensations, cervical mucus, bleeding, temperature and other information the user chooses to record. Notes and questions sit alongside the cycle, ready to return to at the next consultation.

Charts use 35 days per page and include consultation notes. They can be printed or saved as a PDF through the device’s export options. The app also calculates summaries from the recorded observations. Those interpretations remain under validation and need review with a FertilityCare practitioner or doctor. VitaChart does not diagnose conditions or replace instruction in the method.

Keeping the journal local

A fertility diary holds intimate information. I wanted to keep that record on the device and make daily recording work offline, without requiring an online account. That is how the current version works:

• Local records: observations, cycle history and the optional profile are stored on the device.
• No advertising or third-party analytics: the app does not include advertising or analytics SDKs.
• Exports you control: reports and JSON backups leave the app only when you choose to save or share them. The backup is not encrypted by the app.
• Couple sharing is future work: remote synchronisation and encrypted pairing are not available in the current version.

What is available today

Daily recording uses a grid of 12 cards. The journal includes optional local reminders, a profile photo processed on the device, consultation notes and backup and restore options. Android, iPhone and the installable web version share a React and TypeScript codebase.

• Availability: Android and iPhone versions are in private testing. Store release is in preparation; there is no public download yet.
• Validation: technical testing is ongoing and does not establish clinical accuracy or certification.
• Privacy: read the VitaChart Privacy Policy for storage, export and deletion details.