Write on paper. See within.

Your handwriting,
your private perspective.

Keep the human ritual of writing by hand. Diary Companion reads your pages on-device, then offers a calm outside perspective—without sending your life to a server.

See how it worksNo account · No cloud · Yours alone
SEPTEMBER 18

I keep circling the same question—

what do I actually need?

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Perhaps you are not missing an answer. You may be looking for permission to choose.

Private reflection · Generated on-device

A quieter kind of technology

Keep the pen. Gain a new point of view.

A diary should still feel like a diary: paper, ink, pauses and imperfect lines. We use local intelligence after the page is written—not during it—so technology supports the ritual instead of interrupting it.

01

Write freely

Use any notebook. Mix languages, cross things out, write in the margins.

02

Capture a page

Photograph it. A vision-language model transcribes each page in order on your device.

03

Look again

Read a thoughtful reflection, notice patterns, and continue the conversation privately.

The science of the hand

Typing records quickly. Handwriting thinks in motion.

A keypress is a repeatable selection. A handwritten letter is a continuous path shaped by vision, touch and fine motor control. That richer sensorimotor loop is one reason the two modes feel—and register in the brain—differently.

256EEG sensors
36university students
θ / αconnectivity differences
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Handwriting

  • Letter-specific motion
  • Visual + motor feedback
  • A naturally reflective pace
  • The marks of the moment
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Typing

  • Repeated keypresses
  • Fast capture and editing
  • Easy restructuring
  • Immediately searchable text

Diary Companion joins the two: write with your hand, then search and reflect with computation.

The value of a second chair

Some patterns are easier to see from across the table.

Research on self-distancing suggests that considering an experience from an observer’s point of view can reduce emotional reactivity and repetitive thought. A trusted reader can help us step back. AI can make that kind of prompt available when another person is not.

“What might this look like if it happened to someone you care about?”
Useful, with honest boundaries

AI does not possess human care, can misunderstand you, and is not a therapist. Here its role is focused: offer a steady, nonjudgmental question; surface a possible pattern; help you look again.

Why Diary Companion

Built for one deeply personal job.

01

OCR for real journals

A purpose-built pipeline for mixed languages, corrections, margins and changing layouts. Designed for dedicated fine-tuning on consented handwriting—not a generic vision demo.

02

Private by architecture

OCR, reflections, chat and your diary database run locally by default. Your pages stay under your control, available whenever your supported device has power.

03

A broader lens

A language model trained across broad and diverse text can suggest questions from many angles, while your own entries keep the reflection grounded in your life.

100%on device

Your inner life is not telemetry

The cloud never needs to read your diary.

The bundled Qwen3-VL model runs through MLX on the phone’s GPU. No account, API key or server is required for the core experience. A remote endpoint exists only as an explicit choice.

✓ On-device OCR✓ Local reflections✓ Local database✓ User-controlled export

Evidence, not mythology

What the research says—and what it does not.

We designed around suggestive evidence, not absolute promises. Expressive writing shows small average benefits with real variation between people. Self-distancing can support reflection, but no app replaces relationships or professional care.

01
Handwriting & brain connectivityVan der Weel & Van der Meer, Frontiers in Psychology, 2024
↗02
Expressive disclosure meta-analysisFrattaroli, Psychological Bulletin, 2006
↗03
Self-distancing & reflectionAyduk & Kross, Journal of Personality and Social Psychology, 2010
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From the blog

Learn more about your mind.

Short, research-informed reads about mental health, emotions, and reflection.

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Recognize a downward spiral — and interrupt it with a handwritten diaryKey takeaways from Debugging Your Brain by Casey Watts: cognitive distortions, the input-process-output model, and six techniques for breaking the loop.
Read →

Your notebook already knows a lot.
Now it can help you notice.

Write honestly. Keep it private. Return with a little more distance—and perhaps a little more kindness.

iOS version coming soon · Contact [email protected]