For people living with hidradenitis suppurativa (HS)
Your diary for hidradenitis suppurativa.
Document your symptoms in 30 seconds a day, recognize your personal patterns — and go into your next appointment better prepared.
The app is in open beta: it works and your data is safe, but there may still be bugs and features can change. Feedback helps a lot.
Trigger detected
Dairy · +1 day
Protective factor detected
Mediterranean days
Does this sound familiar?
Living with HS often means:
lots of questions, few answers.
The next flare comes whenever it wants. And once again I'm searching in the fog for whatever might have triggered it.
Ten minutes with the doctor — and I'm supposed to remember off the top of my head how the last three months really were.
Everyone says something different. Diet, forums, guidebooks. But none of them know my data.
MySkinWarrior turns that feeling into data — your own.
How a gut feeling becomes a pattern
Three steps, 30 seconds a day
You don't have to analyze anything. You briefly log how your day was — the app does the rest.
- 1
Log
Pain, flare, sleep, food, stress — captured in a quick daily check. Faster than a voice message.
- 2
Analyze
The app compares your days statistically — including with a time lag, since many triggers only show an effect 1–3 days later, and checks for confounders.
- 3
Understand
You see which patterns are in your data — and take them to your next appointment as a report.
Shows correlations, not diagnoses. Discuss anything notable with your doctor.
Less guessing. More clarity.
30-second check-in
Pain, flares, sleep, food, stress — once a day, faster than a voice message. Works offline too, as an app on your home screen.
Trigger analysis with time lag
Many triggers only show an effect days later. The analysis accounts for that, checks for confounders, and shows you which patterns are in your data — including your IHS4 trend.
Doctor's report as PDF
Your trend, DLQI, and notable patterns as a clear report — so those 10 minutes with your doctor really count.
A look inside the app
Real screenshots from the app — this is what your everyday life with MySkinWarrior looks like.
Log today
30 seconds a day
Your triggers
Time-lag analysis
For your appointment
Doctor's report as PDF
Built by someone who lives with it
I built this app because I needed it myself.
I'm Robin, I live with hidradenitis suppurativa myself, and I write the My Skin Warrior zines. I wanted patterns instead of confusion — so I built the tool I was looking for myself.
No corporation, no ads: just someone who lives with HS and built a tool he uses himself every day.
Read my story →Together, we understand HS better
If you'd like, you can donate your entries anonymously — without your name, email, or notes — to help recognize patterns across everyone using the app. It's voluntary, revocable anytime, and the app works fine without it too.
Your data. Your control.
Servers in Frankfurt, Germany (EU)
Your account and health data stay in Germany; only your account can access them.
Ad-free, no tracking
No ads, no analytics cookies, no selling your data behind your back.
Delete anytime
One click in your profile deletes your account and all data — permanently. You can export everything as a backup first.
Guided by clinical guidelines
Our knowledge content and scores (IHS4, DLQI) follow the German S2k guideline for HS/hidradenitis suppurativa (AWMF 2024). Source: AWMF register
MySkinWarrior is a documentation and self-monitoring tool, not a medical device. It does not provide diagnoses and is no substitute for medical advice or treatment.
Frequently asked questions
What is MySkinWarrior?
A digital diary for people with hidradenitis suppurativa (HS, also known as acne inversa). You document your symptoms and daily life in about 30 seconds a day — the app shows you statistical patterns and prepares everything as a report for your next appointment. It's a documentation tool, not a medical device.
Is the app free?
Yes, you can use MySkinWarrior for free — ad-free and without tracking.
What is the IHS4 score?
The IHS4 (International Hidradenitis Suppurativa Severity Score) is a dermatology score based on the number of inflammatory nodules, abscesses, and fistulas. MySkinWarrior calculates it automatically from your entries — so you can show your doctor how things have changed over time.
How does the trigger analysis work?
The app compares your entries statistically over time — including with a delay, since many factors only show an effect 1–3 days later. It shows correlations, not proven causes, and doesn't give treatment recommendations. It's best to discuss any patterns you notice with your doctor.
Where is my data stored?
On servers in Frankfurt, Germany (EU). Only you have access to your entries; you can export them as a backup at any time and delete your account and all data yourself.
Does the app replace seeing a doctor?
No. MySkinWarrior doesn't provide diagnoses and is no substitute for medical advice or treatment — the app helps you go into your appointments better prepared.
Start understanding yourself today.
Free, ad-free, set up in two minutes.
Start for freeBe here from the start — the app is new, and your first entries help shape it.