SIS Women's Health
Track symptoms & patterns
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
If you've been told it's hormones.
Or your weight. Or your age. Or stress.
If your tests came back "normal" — but your body says otherwise.
If you've left appointments feeling misunderstood, wondering why no one is putting the pieces together…
You are not alone. And you are not making it up.
Your body knows. SIS helps you trust that.
SIS stands for more than one thing.
Sisters in Solidarity.
Seen. Informed. Supported.
And quietly, it stands for sister — the one who believes you, the one who's been there too.
SIS is a calm, private space to record what's been happening — over time.
Symptoms. Appointments. Medications. Procedures and devices. What you've been told.
Whether you're living with endometriosis, PCOS, adenomyosis, perimenopause, chronic pain — or something no one has put a name to yet.
When everything is spread across months and conversations, patterns get missed. SIS brings those patterns back into view.
WHAT SIS DOES
- Tracks symptoms, appointments, medications, procedures and devices
- Captures anything the moment it happens with the Whenever Log — no daily pressure
- Stores important documents and letters
- Surfaces patterns across your experience over time
- Builds a clear, structured summary to take to your doctor — as a PDF, by email, or copied
- Connects you to support organisations, advocacy groups and communities
WANT A HAND?
Big Sis, an optional premium companion, can help you understand medical terms, prepare for appointments and reflect on your journey. Before anything is sent, she shows you exactly what would be shared — and you decide.
WHAT SIS DOES NOT DO
- No medical advice
- No suggested diagnoses
- It does not replace your doctor
- It does not share your data — your record stays on your device. The one optional exception is Big Sis: only the details you approve are sent, with personal identifiers removed, and never stored.
WHY SIS EXISTS
SIS was built from lived experience. From years of being told nothing was wrong — while something clearly was. From appointments where pieces were missed, and stories retold again and again.
SIS exists so the next woman doesn't have to start from zero. Because the burden of being believed should not fall on the person who is unwell.
"This is not just a tracker. It's a record of being heard — even when no one was listening."
Privacy Policy: https://bigsis.health/privacy
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A calmer, warmer, smarter SIS.
What's new:
- A gentler new look — softer colours and a cleaner, less cluttered feel
- A simpler home that starts with what matters to you today
- A friendly welcome for anyone opening SIS for the first time
- Big Sis — your optional, private companion — ready when you'd like a hand
- Smarter symptom detection: if you write that something ISN'T happening ("no weight loss"), SIS understands, and won't add it to your record
- Urgent alerts now look clearly different from everyday reassurance notes
- Report a problem from inside the app — we read every one
- Smoother typing when adding appointment dates
As always, your story stays yours — kept on your own device, seen only by you.
The developer, Tamalyn Milligan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tamalyn Milligan
- Size
- 15.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Big Sis Annual $29.99
- Big Sis Monthly $3.99
- Copyright
- © 2026 Tamalyn Milligan