A Journal That Learns You

Stop re‑reading your life. Start growing from it.

For the Thinkers and the Forgetters.

Castalia is Pegasus Realm's journal for people who think in circles and forget what they figured out last month. It holds all of it, without judgment. Write it down or say it out loud. Search for the thing you know you wrote but can't remember when.

Start writing free On iPhone On Android

Castalia used to be called InkWell.

A man smiles to himself as he writes in a notebook by a window

Castalia's Today screen, asking: What's taking up space today?

What's Inside

Life is messy. Castalia holds your thinking and gives you back insight.

Every capture mode is free. The intelligence layer is there when you want more.

Write it, or say it.

Type it, or just talk. InkOutLoud turns your voice into a clean, readable entry, so a thought caught on a walk doesn't die on a blank page later.

Castalia's writing page with a voice button

Ask your journal anything.

Search by meaning, not just keywords. Ask “When did I last feel rested?” and Castalia finds the entries that answer it. Or tap a day on the calendar.

Search is free.

Castalia's Entries screen showing a search and a calendar

Turn a want into a plan.

WISH is a values-based goal method. Sort what matters to you, name a goal that grows out of it, plan for the moment that usually gets in the way, and let Sophy check the plan if you like.

Gratitude practices, quick capture, timed Sprints, Reframe, and an optional before-and-after check-in are all in the free version too.

A goal plan in Castalia with Sophy's note

However You Journal

Wherever the thought shows up.

Five minutes or an hour. Morning coffee or the last thing before sleep. Castalia keeps it all in one place.

A woman in glasses pauses mid-thought while writing in her favorite chair — In the good chair, before the day starts.

A man writes in a notebook on a park bench under a tree — On a park bench, mid-thought.

A woman writes in her journal in bed at night — After everyone else is asleep.

Meet Sophy

A companion who reads only when you say so.

Sophy is Castalia's AI companion. She offers a prompt when you want one and reflects back what she notices when you ask her to. She reads your journal only when you ask, or when you turn on her insight emails. Silence is the default.

Reflections grounded in your own past entries, only when you ask
Prompts when you want a starting point, silence when you don't
Your entries are never used to train AI

A woman sits by a window with a cup of coffee, looking out

Example reflection

I keep circling the same decision and getting nowhere.

You wrote something close to this in March, and back then the circling stopped once you named what you were actually afraid of losing. What would that look like this time?

Your Words

Built to stay private.

A journal only works if you can be honest in it. Here is what that means in practice.

EncryptedIn transit and at rest.
Never soldYour data is not a product.
Never used to train AIYour thinking stays yours.
Never visible to othersNo other user can read what you write.
Sophy reads when you say soWhen you ask, she can look across your journal to respond. Otherwise she reads only for the insight emails, and only if you turn them on.
Yours to takeExport your entries whenever you want them.

A Note From Adam

The best thing a person figures out is usually gone by next week.

I'm a coach. Here's what I kept seeing. Someone figures out something big in a session. A week later it's gone, like a great shower idea lost by breakfast. They cared. Life just kept moving.

So I built the place I wanted for them, and for me. Somewhere to put a thought the moment it shows up, typed or spoken, and a way to get it back when it matters. Sophy stays quiet until you ask.

If something is missing or broken, tell us at support@pegasusrealm.com.

Mahalos,

Adam Grimm

Founder | Pegasus Realm

Pricing

Free, actually.

The free version is a complete journal, not a teaser. Plus is there if you want the intelligence layer on top.

Castalia Free

$0forever

Unlimited journaling, every capture mode
Voice journaling: say it and it lands on the page
Gratitude practices, one suggested each day
The full WISH values-based goal flow
Search, Practice Summary, and export anytime

Start writing free

It learns you

Castalia Plus

$6.99/month, or $49.99/year

Everything in Free
Sophy without a daily limit
Your month: Sophy’s read of your last 30 days, when you ask
Weekly and monthly insight emails, if you turn them on
Cleaned-up voice entries, photos and files in your entries
Text message reminders and goal milestones

Start Plus

For Practitioners

Castalia replaces nothing. It's where the work between sessions survives the week.

If you're a therapist, counselor, social worker, or coach: your clients can do their between-session work where they already write. You keep the plan. If they choose, they can send you a Practice Summary, built from usage, never their words.

Practitioner resources

1
Your client journals.Entries, voice notes, practices, and goals live in their private journal. You never see them, and neither does anyone else.
2
They make a Practice Summary.Days journaled, the mix of practices, their rhythm, and their own before-and-after ratings. Never the words, titles, or tags.
3
They forward it to you, if they choose.The summary goes to the client's own email. Castalia sends nothing to anyone else.

On Web, iOS, and Android

Your thinking deserves a place that remembers.

Start tonight's entry in the browser, or take Castalia with you.

Start writing free Visit castaliajournal.com