Rosea
Your personal rosacea diary — private, on-device, no account
What it does
Rosea started as an app I built for my wife — diagnosed with rosacea after a lifetime of facial redness, asked by her dermatologist to track daily triggers. An Excel sheet lasted a week. So I built something better. Log daily severity, symptoms, and triggers (weather, food, emotions, cosmetics, activity, medication). Get weekly pattern reports. Export a PDF or CSV for your dermatologist. Everything stays on your device. No account. No cloud. No subscription.
Does the same job
all alternatives →- IMI made a privacy friendly and simple app to track my menstruation2024 · play.google.com · ▲732
Hey HN, after the app I actually used to track my period wanted me to log in and save my data in the cloud, I decided to write my own. Most apps in this area are based on a subscription model and display far too much information anyway. For me, a simple calendar is enough where I can add a few notes if necessary. So that is the result of my work - a simple design and the data is only saved on the smartphone.
- IBI built a daily sunlight tracker2025 · lumehealth.io · ▲46
I kept trying to explain how important outdoor light is and how most people aren’t getting enough. Eventually I figured that showing is more effective than telling. So we built a free app that uses your Apple Watch or iPhone to automatically track your light exposure throughout the day. It tells you if you’re getting enough, shows you how consistent you are, and rewards habits that support hormone balance. It's in beta on TestFlight, let me know what you think!
Primrose & Eve: MenopauseJun 2026 · apps.apple.com · ▲11Privacy-first self-advocacy tool for perimenopause.
More life & fun this month
the category →- TL
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Photosynthesis fires two of your iPhone
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Your multimedia mentor that takes you from mid to great
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Launched alongside, April 2026
the whole month →
- AG
Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
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Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
- BC
Life & fun · Apr 2026 · sam-burns.com
- IB
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app