Maribel Ferreira

Product Designer and creator of Bluma

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About

I started in UX/UI design, picked up code along the way, and realised I could just… build the things I kept designing. Now I'm an indie maker combining 6+ years of product design experience, rooted in real user research and visual craft, with hands-on development to create tools that are genuinely useful and a joy to use. Currently launching Bluma, a privacy-first period tracking app that keeps your personal data exactly where it belongs, on your device.

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Maker History

BlumaPrivate period tracker that works offline
May 2026

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Joined Product HuntApril 23rd, 2026

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9d ago

Bluma - Private period tracker that works offline

Most period apps send your health data to a server. Bluma doesn't. Track your periods, ovulation, symptoms, and moods without worrying about where your health data ends up. Get predictions, spot patterns, and better understand your menstrual cycle. Everything stays on your device, offline and encrypted. No account. No ads. No leaks. Open source and available on Android, with iOS support coming soon.