Home— Case Studies— Circadian
Health & Wellness · Flutter · Location-Aware

Nature Already Knows
the Right Time.
We Built the Technology to Follow It.

Circadian is a nature-first wellness platform that helps users realign sleep, eating windows, fasting, and daily activity with their body's natural rhythm — using real-world solar events instead of arbitrary schedules.

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Industry
Health & Wellness
Solution
Circadian Lifestyle Platform
Platform
Android & iOS
Services
Strategy · UX · Flutter · Backend
GOOD MORNING
06:42
Sunrise in 18 min 06:24 → 19:48
Morning Light Exposure
06:42 – 07:10
Eating Window Opens
08:30
Wind-Down Reminder
20:30
Fasting · 14h 22m elapsed
Sunrise 06:24
Updates with location
Golden Hour Soon
19:14 today
Platform covers Circadian Dashboard Solar Event Tracking Sleep Guidance Fasting Windows Location Services Push Notifications Subscription Billing Daily Learning
365days
Dynamic Solar Calculations
1:1
Personalized Daily Guidance
6+
Solar Events Tracked
2
Platforms · Android & iOS
Circadian ScienceSolar Events Natural FastingSleep Guidance Flutter · Node.js · FirebaseHealth & Wellness Circadian ScienceSolar Events Natural FastingSleep Guidance Flutter · Node.js · FirebaseHealth & Wellness
The Challenge

Modern life works
against human biology

People have more health information than ever before. Yet sleep quality continues to decline, energy levels fluctuate, meal timing becomes inconsistent, and artificial lighting disrupts natural hormone production.

Most wellness apps simply collect more data. Few actually help users understand when their body naturally wants to sleep, wake, eat, move, recover, or fast. The challenge was to transform complex circadian science into a simple daily experience anyone could follow.

Sunrise
06:24
Solar Noon
13:06
Sunset
19:48
UVA / UVB
Peak 11:00–15:00
Golden Hour
19:14
Blue Hour
20:10
modern-life-works
Our Solution

Technology that adapts to nature,
not the other way around

Current LocationEvery recommendation begins with where the user actually is — not a generic timezone assumption.
Solar EventsSunrise, solar noon, sunset, golden hour, and blue hour calculated precisely for that exact location and date.
Seasonal Daylight ChangesAs days lengthen and shorten throughout the year, every recommendation shifts automatically alongside them.
User PreferencesPersonal constraints and lifestyle factors are layered on top of the solar baseline for a truly individual rhythm.
Circadian ScienceEvery timing decision is grounded in established research on light exposure, cortisol, and melatonin cycles.
technology-that-adapts-to-nature
Six Pillars of Natural Living

Built around how the body
actually works

Circadian Dashboard

A personalised daily timeline based on real-world solar events — exactly when light, food, movement, and rest matter most for that day.

Intelligent Sleep Guidance

Sleep and wake recommendations that adapt with seasonal daylight changes — never a fixed bedtime that ignores the season.

Natural Fasting Windows

Eating schedules aligned with circadian biology rather than arbitrary timers — built around when the body is actually ready to digest.

Solar Event Tracking

Sunrise, solar noon, sunset, UVA, UVB, and golden hour — every important environmental event automatically calculated and updated.

Daily Learning

Science-backed educational content helping users understand why timing matters — building genuine understanding, not just compliance.

Personalized Notifications

Helpful reminders delivered exactly when they're biologically relevant — not generic alerts, but moments that matter for that user's body.

From Sunrise to Sleep

Seven steps to a
rhythm that fits naturally

01

Location Detection

Platform identifies the user's exact location

02

Solar Calculations

Sunrise, sunset, and key events computed

03

Rhythm Generation

A personalised daily rhythm is built

04

Personalized Timeline

Sleep, eating, and movement windows set

05

Notifications

Reminders delivered at the right moment

06

Healthy Habits

Consistent routines form naturally

07

Improved Lifestyle

Better sleep, energy, and daily wellbeing

Every recommendation updates automatically as nature changes throughout the year.

The Platform, Screen by Screen

Calm by design.
Apple Health meets Headspace.

my-day

My Day

The daily home screen — a single calm view showing exactly what the body needs right now, based on real solar data for that location and date.

  • Personalised timeline built from solar events
  • Current rhythm phase always visible
  • Soft, calming visual language throughout
solar-dashboard

Solar Dashboard

A visual sun arc shows exactly where the sun is in its daily journey — sunrise, solar noon, golden hour, sunset, blue hour — each calculated precisely for the user's location.

  • Live solar position visualisation
  • All key events marked with exact times
  • Updates automatically by season
sleep-timeline

Sleep Timeline

Sleep recommendations grounded in actual daylight patterns rather than a fixed 10pm bedtime that ignores the season entirely.

  • Wind-down window calculated from sunset
  • Recommended bedtime and wake time
  • Adjusts automatically as seasons shift
fasting-planner

Fasting Planner

Eating windows derived from circadian biology — not arbitrary 16:8 timers, but a window aligned with when the body's metabolism is naturally most active.

  • Circular fasting progress tracker
  • Eating window aligned with daylight
  • Historical fasting cycle review
learning-centre

Learning Centre

Bite-sized, evidence-based content that explains the "why" behind every recommendation — building genuine understanding rather than blind compliance.

  • Science-backed educational articles
  • Contextually surfaced by rhythm phase
  • Plain-language explanations of complex science
The Numbers Tell the Story

Platform capabilities,
not vanity metrics

Calculation Engine
Dynamic Solar Calculations
Recommendations automatically update based on user location — accurate for any city, any season, any day of the year.
Personalisation
Personalized Daily Guidance
Every schedule adapts to the individual — their location, preferences, and the specific date — never a one-size-fits-all template.
Foundation
Science-Driven Wellness
Built around established circadian research rather than wellness trends — every recommendation has a biological basis.
Engagement
Built for Daily Habits
Designed to become part of users' everyday routines — not a one-time tracker, but a daily companion that evolves with the seasons.
Built on a Modern Wellness Stack

Every decision made
for daily reliability

Every technical decision focused on creating a responsive, reliable experience that users could depend on every single day.

Flutter
Node.js
Firebase
Location APIs
Push Notifications
Subscription Billing
Cloud Infrastructure
Content Management
Every Wellness Challenge Became a Platform Feature

Problems solved
through natural design

Challenge

Fixed schedules ignore seasonal changes

Solution

Dynamic solar calculations recompute every recommendation daily based on actual sunrise and sunset for that location.

Challenge

Users struggle with sleep consistency

Solution

Personalized circadian guidance adapts bedtime and wake recommendations as daylight naturally shifts throughout the year.

Challenge

Generic fasting timers feel arbitrary

Solution

Nature-based fasting windows align eating schedules with circadian biology rather than a fixed 16:8 timer.

Challenge

Scientific concepts feel overwhelming

Solution

Simple visual experiences translate complex circadian research into calm, intuitive daily guidance anyone can follow.

Challenge

Wellness apps lack long-term engagement

Solution

Daily education and evolving routines keep the experience fresh as recommendations shift naturally with the seasons.

The Science Behind Every Recommendation

A computational wellness
platform, not a reminder app

Every recommendation is calculated using real-world environmental changes rather than static schedules, allowing the experience to evolve naturally throughout the year.

Layer 01
Dynamic Solar Calculations
Precise sunrise, sunset, and solar event computation for any global location and date
Layer 02
Location-Aware Scheduling
Recommendations recalculated automatically as the user's location changes
Layer 03
Circadian Event Engine
Core logic translating solar data into personalised sleep, eating, and activity windows
Layer 04
Personalized Notification System
Biologically-timed reminders delivered exactly when they matter for that individual
Layer 05
Educational Content Platform
Science-backed learning content surfaced contextually based on the user's current rhythm
Layer 06
Subscription Management
Recurring billing and tiered access supporting the platform's long-term business model
Layer 07
Cloud Synchronization
Seamless data sync across devices keeping the user's rhythm consistent everywhere
Future Layer
Wearable Integration
Architecture prepared for Apple Health, Google Health Connect, and biomarker data
More Than a Wellness App

A foundation for a larger
health ecosystem

Circadian establishes the foundation for a much larger health ecosystem. Rather than helping users track health, the platform helps them build healthier lifestyles by working with nature instead of against it.

Wearable integrations — Apple Health and Google Health Connect
AI wellness recommendations and personalised coaching
Habit analytics and biomarker integration
Community challenges and shared wellness journeys
health-ecosystem

Building the Future of Digital Health?

Whether you're creating a wellness platform, digital therapeutics solution, habit-building app, or subscription health product — we help transform evidence-based ideas into beautiful digital experiences.

Talk to Our HealthTech Team
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