features

Every feature. Every insight. All on your device.

Private journaling — no account required

Start writing the moment you open Cairn. No sign-up, no email, no account creation. Your entries are stored only on your device, protected at rest by iOS Data Protection.

• Type, dictate, or voice-note your journal entries.
• Photograph handwritten pages — scanned entirely on-device.
• Zero network calls from the app to any external server.

On-device AI intelligence

Cairn uses Apple's on-device models to process every entry. Mood detection, theme extraction, pattern analysis — everything happens locally.

• Mood Stone visualization. Each entry gets a unique "mood stone" that represents your emotional state — load, calm, hope, anxiety, fatigue.
• Automatic theme detection. Cairn extracts the key themes from each entry — work, relationships, growth, health.
• Emotional metrics. Tracks load (stress), agency (control), and clarity over time with trend charts.

"Help Me Journal" AI companion

Staring at a blank page? Cairn's AI companion asks one gentle question at a time, helping you find the words. It remembers context across turns and never labels or judges.

• Conversational prompts that feel natural, not clinical.
• Adjustable tone: listener, stoic, socratic, coach, or friend.
• Open-ended questions that deepen reflection.

Mental health & mood tracking

Cairn tracks your emotional landscape over time — not for anyone else to see, but for you to understand patterns you might miss in the moment.

• Daily mood stones. A visual representation of each day's emotional state.
• Weekly review. Automatic weekly summaries showing what was heavy, what felt calm, and how your week shifted.
• Pattern alerts. Notifications when recurring patterns emerge (for example, "your anxiety spikes on Mondays").

Insights, trends & pattern detection

• Trend charts. See how load, agency, and clarity have changed over time with interactive line graphs.
• Mood mix. Donut charts showing the emotional composition of your entries this month versus last.
• Theme timeline. See which themes — work, growth, relationships — dominated each period.

Path Builder: one goal, eight pillars, small daily steps

Path Builder is a 9×9 chart you fill in yourself. Name the goal in the centre, name the eight pillars that hold it up, and under each one write the small steps that move it forward.

• Track daily. Mark a step and it appears on your Today card with a checkbox.
• The chart lights up. In Patterns, pillars tint by how your entries relate to them and steps by how often you checked them, with a "Pillars this week" view alongside.
• Your values moved, not vanished. Values you chose before 1.4 now live under Patterns as "Your values".

Privacy-first design

• No cloud storage. Nothing leaves your device. Period.
• No analytics. We don't track who you are, when you open the app, or what you wrote.
• No third-party sharing. Your data is not sold, shared, or used for advertising.
• Face ID lock. An optional biometric lock in settings to prevent unauthorized access.