KOHARU
Koharu in her navy office suit, holding her clipboard with her fist raised
CONTEXT0%

Scroll through her day. A demo.

Makasete!

Leave it to me!

01 / MEET YOUR TOKEN ACCOUNTANT

Koharu keeps the books on your Claude Code sessions

A Mac app for Claude Code. As your context fills, her day wears her down. Pajamas mean it's time to compact.

Download for Mac

Free. Works with Codex too.

Koharu Koma, 24. Tokyo office worker.
Now standing on your desktop.

Suit pressed, ribbon tied, clipboard ready.

02 / EVERY TOKEN COUNTS

She reads the real numbers

Claude Code writes each reply's token usage to the session logs on your Mac. She checks it against the model's context window.

Claude Opus, Sonnet and Fable
1M
Claude Haiku
200K
Codex
Reports its own

First coffee of the day. Still smiling, mostly.

03 / A LITTLE HELP KEEPING TRACK

The fullest session gets her attention

She follows your fullest session from the last 20 minutes. Click her to see them all and pin the one you care about.

The ribbon is loose and the mug is empty.

04 / SHE KNOWS WHEN TO CALL IT

Pajamas before the window fills

Claude Code compacts on its own just before full. She changes into pajamas at 95%, with a little room to spare.

Prefer an earlier bedtime? Choose 200K or 400K in Settings. While you are there, pick her outfit.

Blazer off, sleeves rolled up.

05 / YOUR DESK, YOUR BUSINESS

Nothing leaves your Mac

Only token counts are read. No network, no account, no analytics. Your work stays with you.

Read the privacy details

Shoes in one hand, energy drink in the other.

06 / EVEN GOOD ACCOUNTANTS NEED REST

A gentle cue to make some room

When she is in pajamas, run /compact in Claude Code or start a fresh session. She wakes up rested.

Time to think about /compact.

07 / THE BOOKS CAN WAIT UNTIL TOMORROW

A long day,
a little company

Give your token accountant a place on your desktop. Koharu is free and ready for her first day.

Take her home

Compact or start fresh and she wakes up rested.

A SMALL APP FOR YOUR WORKDAY

Put her on your desk

A little company. A clearer sense of when to compact.

Download for Mac

New in 0.2.0: fifteen outfits, from a witch to a ninja. See her wardrobe

Version 0.2.0 for macOS 14 or later, Apple silicon and Intel. Signed and notarized by Apple.

  1. Download Koharu

    Open the download and drag Koharu to Applications.

  2. Make her at home

    Open her. She appears in the corner and the menu bar. Drag her anywhere.

  3. Start Claude Code

    Work as usual. When she is in pajamas, run /compact.