WEATHER & PLAN
Check the weather and your plans together
Home shows the weather and your next event. Today shows today's plans and errands. Check the forecast and your schedule before getting ready to head out.
A daily life web app, with no sign-up
Weather, plans, and money.
Your day, all together.
US dollar (USD) · US Eastern — New York · °C
Make your favorite photo the backdrop to your day.
See the weather, your next event, and your available budget at a glance.
No sign-up or account linking. Your budget and plans stay on your device.
Check the weather and your plans togetherYour daily budget through month-endQuickly record expenses and scheduled paymentsPlan your day with AINo sign-up or account linking
Features
Decide what's next today,
all on one screen.
Kurashi OS is a free web app that brings budgeting, plans, and weather together. Check your day at a glance on Home, then open the feature you need from its icon. Choose which apps to show in Settings.DAILY BUDGET
Your daily budget through month-end
Expenses and scheduled payments are deducted from your budget, then the remainder is divided by the days left, including today. The new board shows a daily estimate through the end of the month.
QUICK RECORD
Quickly record expenses and scheduled payments
In Advanced mode, record a recent expense again with one tap. When you return from a payment app, you can record just the amount on the spot.
AI PLANNING
Plan your day with AI
In Advanced mode, choose the information to include and create a prompt on your device. Review the full text before taking it to Gemini or ChatGPT. You can also select suggested events from the response and add them to your plans.
LOCAL FIRST
No sign-up or account linking
Your budget and plans are saved in the browser you use. Kurashi OS does not read bank or card transactions, so you can keep records at your own pace.
Check rain near your saved location with radar from the past two hours
MONTH END
See your daily budget through the end of the month
Your recorded expenses and upcoming payments, such as rent and bills, are deducted from your monthly budget first. The remainder is divided by the days left this month, including today, to show a daily estimate. Each time you record an expense, the estimate is recalculated from the remaining amount.
How to record expenses, with calculation examples・Calculate your daily budget
ON YOUR PHONE
Open it right from your iPhone or Android home screen
Add it to your home screen from Safari on iPhone or Chrome on Android to open it like an app. In Settings, choose your own photo or a dog or cat wallpaper, and adjust card transparency. How to use Home, events, and notifications has more details.
YOUR DATA
Your budget and plans are saved on this device
There is no sign-up, login, or bank or card connection. Your budget and plans are saved in the browser you use. You can save and restore your own backup whenever you need one.
The idea behind Kurashi OS
You don't have to track everything.
Kurashi Board has a new name and design: Kurashi OS. It is not built to manage every detail of your budget, weather, and plans. Its focus is simple: open it and see what your day looks like.
- 01Less switching back and forth between apps
- 02No scores or lectures to rush your day
- 03Easy to use with one hand on your phone
FAQ
Before you get started
Answers about sign-up, account connections, and data storage.What can I do with Kurashi OS?
See today's weather and plans, expenses, upcoming payments, and your daily budget through month-end on one screen. You can also ask Gemini or ChatGPT about information you select, or add suggested events from an AI response.
Do I need to sign up or log in?
No. Open the page, set your weather location and monthly budget, and you can get started.
Does it connect to bank accounts or credit cards?
No. Expenses are entered manually. You can show launch buttons for up to two supported apps: Apple Wallet (iPhone and iPad only), PayPay, Rakuten Pay, d Payment, and au PAY. Kurashi OS does not read their balances or payment histories.
Where are my budget and plans saved?
They are saved in the browser you use. AI prompts are also created on your device and are not sent automatically. Only when you choose to ask directly is a prompt, using approximate and anonymized versions of your saved data, sent to Google through the Kurashi OS server. Anything you type or edit is sent as written, so do not include names, addresses, or secrets. See the privacy page for details.
Does the AI feature send my budget or plans without asking?
No. You choose which information to include and can review the full prompt. With copy or share, it is sent only when you send it in the destination app. With the direct option, it is sent only after you agree to the confirmations and press the button.
Can I use it like an app on iPhone or Android?
Yes. Use Safari's Share menu on iPhone or Chrome's menu on Android and choose Add to Home Screen or Install app. You can then open it directly from your home screen. There is no need to install it from an app store.
Can events sync automatically with my device's calendar?
Events in the app do not sync automatically. From Settings, you can add a recurring event file to your device's calendar as a reminder to open Kurashi OS each morning. The steps vary by device and calendar app.
Can I move my data to a new device?
Use Backup in Settings to save your data, then restore it on your new device. Keep the backup file somewhere safe.
Your day ahead, at a glance.