Luna - Private Period Tracker

Luna - Private Period Tracker

Your period data never leaves your phone. 100% private.

17 followers

Visit website
Luna is the period tracker that actually respects your privacy. With 99% accurate predictions powered by on-device AI, your intimate health data never leaves your phone. No cloud, no sharing, no ads. Track periods, ovulation & symptoms with complete privacy.
Luna - Private Period Tracker gallery image
Luna - Private Period Tracker gallery image
Luna - Private Period Tracker gallery image
Luna - Private Period Tracker gallery image
Free Options
Launch tags:Health & Fitnessā€¢Privacyā€¢Artificial Intelligence
Launch Team / Built With
Framer
Framer
Launch websites with enterprise needs at startup speeds.
Promoted

What do you think? ā€¦

Pedro Mamare
Maker
šŸ“Œ
Hey Product Hunt! šŸ‘‹ I'm Pedro, the maker of Luna. I built this after my wife asked me a simple question: "Why does my period app need internet to tell me when my next period is coming?" That got me thinking... and worried. Period tracking apps collect incredibly intimate data - cycles, symptoms, sexual activity, pregnancy attempts. Recent events (Roe v. Wade, data breaches) have shown this data can be weaponized. So I built Luna with one core principle: YOUR DATA NEVER LEAVES YOUR PHONE. šŸ”’ How Luna is different: - 100% on-device processing (using Core ML) - Works perfectly in airplane mode - No account required - No cloud, no servers, no analytics - Optional encrypted backup (you control the keys) šŸ“Š But still accurate: - 99% prediction accuracy after 3 cycles - Symptom pattern recognition - Fertility window calculations - All using the same scientific methods as other apps I'd love to hear your thoughts on privacy in health apps. What features would you want in a truly private period tracker? P.S. - For today only, everyone who upvotes gets 50% off lifetime premium! Just DM me your email šŸŽ
Joana Pessoa

Is there an Android version?

Pedro Mamare
Maker

@joana_pessoaĀ Hi Joana! Yes, Android version is coming in January 2025! šŸš€

We're taking extra time to ensure the same privacy standards using Android's Private Compute Core.

Thanks for your interest! šŸ’œ

Guilherme Mamare

How do you make money if you don't collect data?

Pedro Mamare
Maker

@guilherme_mamareĀ Great question Guilherme! We use a simple, honest subscription model:

- Free: Basic tracking, predictions & calendar

- Premium: $4.99/mo or $29.99/year - advanced analytics, extended predictions, PDF exports

- Lifetime: $99 one-time purchase

No ads, no data selling, just software you pay for. We believe privacy shouldn't be a luxury feature!

The old model of "free app = selling your data" needs to end, especially for health apps šŸ”’

Agendoor

Can you sync between devices?

Pedro Mamare
Maker

@agendoorĀ Yes! But privacy-first šŸ”’

Two options:

1. iCloud Sync: End-to-end encrypted using your iCloud Keychain

2. Local WiFi Sync: Direct device-to-device, no internet needed

Both methods mean we NEVER see your data - the encryption keys stay with you. Think Signal-level encryption but for period tracking!

Your data, your control šŸ’œ

Pedro Santos

What happens if I lose my phone?

Pedro Mamare
Maker

@pedro_santos30Ā Hi Pedro! (great name btw šŸ˜„)

If you enabled encrypted backup:

- iCloud backup restores everything automatically

- Only YOU have the encryption keys - we can't access even if we wanted

If you didn't enable backup:

- Data is lost (that's the trade-off for true privacy)

- But Luna learns your patterns quickly when you start fresh!

We recommend enabling encrypted backup for peace of mind - best of both worlds! šŸ™‚

Chilarai M
Swytchcode

Congrats on the launch!

Pedro Mamare
Maker

@chilaraiĀ thanks!