🇻🇳 Tiếng Việt
🔒 100% On-Device Encryption • Zero Cloud Middleman • Deterministic Science

Your private life navigation
for harmonious balance

Orchestrate your daily rhythms across 5 essential pillars: Money, Time, Relationships, Goals, and Mind in one calm, serene app. 100% deterministic mathematics, military-grade on-device encryption, and uncompromising privacy.

Download on the App Store Explore The 5 Pillars
09:41
Today
📅 24h Schedule Timeline
85% Match
07:00
Morning Run & Breathwork ✓
45m • Health
08:30
Architecture & Code ✓
2.5h • Career
12:00
Nutritious Lunch & Reading ✓
1h • Recovery
14:00
Strategy Sync & Weekly Roadmap In Progress
1.5h • Team
19:00
Family Dinner & Catch-up 19:00
1.5h • Relationship
📝 Daily Routines
5 of 6 completed
Today
Money
Time
Relations
Health
09:41
Health
😊 How are you today?
Tap a face for quick mood check-in
😃
Happy
🤩
Excited
😌
Calm
🙏
Grateful
😴
Tired
😢
Sad
😰
Anxious
😡
Angry
🧠 Mental
📖
Mental wellbeing
Journal, regulation, practice
›
📈
Life balance & PERMA
Optimal 8.5/10 this month
›
🏃 Physical
⚡
Activity this week
Outdoor 5K run & Strength
180 min
2 workouts
Today
Money
Time
Relations
Health
09:41
Money
Current Balance Primary Checking ✓
$5,420.00
Spent this month: $1,245.00 Budget: 65%
🗓️ Fixed Cashflow
Manage
3 scheduled commitments (Rent, Gigabit Fiber, Subscriptions)
📋 Recent Activity
Past 7 days
☕
Morning Coffee & Pastry
Dining • 2h ago
-$6.50
🛒
Organic Weekly Groceries
Household • Yesterday
-$48.00
📚
Atomic Habits & Notebook
Self Growth • 2d ago
-$24.99
💼
Client Project Retainer
Income • 5d ago
+$4,200.00
Today
Money
Time
Relations
Health
✓ 100% Native SwiftUI Interface Simulated in Pure CSS
🎁 100% FREE ACQUISITION FUNNEL

Unlimited Expense Tracking, Free Forever

Unlike other apps that cap your monthly entries, Cairn Harmony unlocks the Money Pillar 100% Free Forever. Log spending in one tap, with no ads and no bank logins, for maximum financial privacy.

Get Started Free

The 5 Pillars of Harmonious Living

Every pillar is grounded in behavioral science and deterministic mathematics, eliminating vague guesswork.

💳

1. Money & Stability

Frictionless 1-tap logging with Tag-First chip suggestions, budgets, recurring bills and a month-end spending forecast.

100% Free Forever
⏱️

2. Time & Rhythm

Set weekly recurring templates and review 15-minute plan-vs-actual variance. Today's timeline builds itself from your calendar, Apple Health and places — you just confirm with one tap.

Plan-vs-Actual • Timeline
👥

3. Relationships & Dunbar

Nurture genuine bonds across your Dunbar 150 social circles. Track 2-way reciprocity balance, receive timely contact nudges, and detect signs of social isolation early.

Dunbar 150 • Reciprocity Balance
❤️

4. Mind & Health

Battery-friendly on-device Apple HealthKit sync. Reflect on the 4-quadrant RULER Mood Meter, practice Meta-Moment regulation, and follow evidence-based CBT-I sleep hygiene.

RULER Mood Meter • CBT-I Sleep
🎯

5. Goals & Milestones

Define SMART measurable goals with 1..5 difficulty milestones. Automatically aggregates confirmed calendar hours and financial expenses into actual progress.

SMART • Auto-Aggregated
✨ THE HARMONY ADVANTAGE

Cross-Pillar Intelligence

Life does not happen in isolated silos. Cairn Harmony bridges the gaps between life pillars to reveal profound connections that standalone apps miss completely.

Money × Time × People

Multi-Day Journeys

A trip or a project is one story: Cairn gathers its spending, time and companions into a single journey, so you can look back on what it truly cost and what it gave you.

Time & Money × Goals

Real Life Investment

Goals are not just wishlists. Cairn Harmony aggregates your confirmed calendar hours and logged expenses to reflect your true investment toward long-term mastery.

Relationships × Movement & Health

Social Isolation Alerts

When physical movement slows, energy ratings decline, and no interactions occur within 7 days, a compassionate nudge helps you reconnect with loved ones.

🛡️ UNCOMPROMISING PRIVACY & SCIENCE

Zero Cloud Middleman • No AI Hallucinations

Your financial records, personal schedule, and reflections are sacred. Cairn Harmony operates on a strictly 100% Offline-First architecture. Your local database is sealed with military-grade AES-256 (SQLCipher) encryption tied to your iOS Keychain.

All insights, balance scores, and nudges rely on deterministic mathematics and validated psychological frameworks. Your life data is never fed into cloud LLMs or third-party servers.

✓ Local SQLCipher AES-256 Encryption
✓ Keys Protected by the iOS Keychain
✓ Zero-Knowledge iCloud E2EE Sync
✓ No Tracking, No Ad Targeting
✓ Instant 1-Tap Data Purge

Transparent & Respectful Pricing

Start free with full expense management. Upgrade to Plus or own it forever with a Lifetime Pass for total peace of mind.

Cairn Free

Private offline expense manager & lifestyle logbook

$0 / lifetime
  • ✓ 100% Unlocked Money Pillar
  • ✓ Unlimited transactions, no ads, no bank logins
  • ✓ Budgets, accounts and recurring bills
  • ✓ Standard manual logging across all 5 pillars
  • ✓ Local SQLCipher encryption on device
  • ✓ Fully functional 100% offline
Get Free

Cairn Harmony Plus

Deep cross-pillar insights, automation & iCloud sync

$39.99 / year (~$3.33/mo)
  • ✓ Includes everything in Cairn Free
  • ✓ Multi-day journeys: money, time & companions together
  • ✓ Plan-vs-actual 15-minute time analytics
  • ✓ Social isolation alerts & full Dunbar 150 circle
  • ✓ End-to-end encrypted iCloud sync & backup
  • ✓ Annual Plan, or Monthly Plan at $6.99/mo
Get Plus

Lifetime Pass

One-time investment — Lifelong peace of mind

$129.99 / single payment
  • ✓ Permanent access to all Plus capabilities
  • ✓ Zero recurring subscription fees forever
  • ✓ All future updates and upcoming feature drops
Own For Life

Frequently Asked Questions

Everything you need to know about privacy, billing, and how Cairn Harmony works.

Is my personal data ever uploaded to external servers?
Never. Cairn Harmony is built on an uncompromising offline-first philosophy. Your entire database lives inside your iPhone's protected memory, encrypted with AES-256 (SQLCipher). We operate no user analytics servers, require no account registrations, and never sell data.
What happens if I change or lose my iPhone?
With Cairn Harmony Plus, turn on iCloud sync in the app. Your records are end-to-end encrypted on your iPhone and stored in your own private iCloud (CloudKit) database; the key is kept in your iCloud Keychain and can be protected with a passphrase. No iCloud Drive needed. On a new iPhone, sign in with the same Apple ID, open Cairn Harmony and turn on sync to restore. Neither we nor Apple can read your records. Without Plus, you can export a backup file (password-protected if you choose) and import it on the new device.
How does syncing between iPhone and iPad work? Do you store my data?
We never store your data. Cairn Harmony has no servers and no accounts. With Cairn Harmony Plus, sign in to the same Apple ID on both devices, make sure iCloud Keychain is on, and turn on Settings › iCloud sync in the app on each one. Every record is encrypted on the device before it leaves and goes straight into your own private iCloud (CloudKit) database. The key stays in your iCloud Keychain and can be protected with a passphrase, so neither we nor Apple can read your records. Devices sync automatically every day and whenever you tap Sync now; if the same item was edited on both, the most recent change is kept. Data read from Apple Health is never synced: each device reads its own. Cairn Harmony is designed for iPhone and runs on iPad in iPhone compatibility mode.
Is my Apple Health data uploaded anywhere?
No. Data read from Apple Health stays on your iPhone. It is never included in iCloud sync or iCloud backup, never shared with third parties and never used for advertising. Cairn Harmony only reads from Apple Health; it never writes to it.
Is the Lifetime Pass truly a one-time purchase?
Yes. With a single $129.99 payment, your Apple ID permanently unlocks all Plus features without any recurring fees or renewal charges.
Does Cairn Harmony use cloud generative AI (like ChatGPT)?
No. Cairn Harmony is powered exclusively by deterministic mathematics and validated behavioral science frameworks (RULER, Dunbar, CBT-I, SDT). All scores, balances, and reflections stem from transparent formulas, completely free from generative hallucinations.