Danielius Studio · iOS
Pink Aura
One letter a day. From your body. On-device.
Open Pink Aura once a day. It reads yesterday's sleep, heart rate variability, steps, active energy, and resting heart rate from Apple Health, and writes you a short warm paragraph about what your body was telling you. The writing happens entirely on your iPhone, with Apple's on-device language model. By the end of the year you have 365 short letters from your own body.
How it works
- Open Pink Aura once a day, ideally in the morning.
- Tap the + and grant Pink Aura read-only access to the five Health metrics it uses. Nothing else is read.
- Tap Write today's essay. Apple's on-device language model writes a short three-to-four sentence paragraph from yesterday's metrics.
- Edit the paragraph if you want, then save. It is filed under today's date.
- Open Pink Aura at the end of the year to read your 365 letters back.
What stays on your device
- No accounts, no email, no signup.
- No analytics, no third-party SDKs.
- Apple Health metrics are requested read-only and never leave your iPhone.
- The language model runs on your device through Apple's Foundation Models. Your essays are not sent to any server.
- Essays are stored on-device with SwiftData. Nothing leaves your phone.
- The only network calls Pink Aura makes are to Apple's StoreKit when you choose to subscribe or buy Lifetime.
What you need
- An iPhone that supports Apple Intelligence (iPhone 15 Pro, iPhone 16 family, or newer) running iOS 26 or later.
- Apple Health metrics on the device. Pink Aura uses sleep, heart rate variability, steps, active energy burned, and resting heart rate. The more of these you record, the richer the essay.
- Pink Aura works without an Apple Watch, but with a Watch the essays usually have more to say.
Pricing
Pink Aura writes a free essay every day. Pro unlocks unlimited rewrites, the full year archive, and the end-of-year letter:
- Pro Monthly: $3/month, with a 14-day free intro on the first subscription.
- Pro Annual: $13/year.
- Pro Lifetime: $29 one-time.
All purchases are handled by Apple and managed under your Apple ID. Pro is Family-Shareable through Apple's standard Family Sharing.
Pink Aura is not a medical app. The essays are reflections, not advice. If something in your body worries you, talk to a doctor.
Support
Questions, bugs, or a feature request? support@danielius.studio. Replies typically within a day or two.
To restore a purchase on a new device, open Pink Aura, tap the settings icon, open the paywall, and tap Restore Purchases. Apple will re-verify your Apple ID's entitlements.
To cancel an auto-renewing subscription, open the Settings app on iPhone, tap your name at the top, then Subscriptions, then Pink Aura Pro.