Setup
Set up once.
Then press Start.
A few minutes the first time. After that Sundial runs on its own, for as long as you leave it on.
Windows 10 or 11
Sundial is one 64-bit Windows program. Nothing else to install: no Python, no Node.
The game on Steam
A Steam account that owns Umamusume: Pretty Derby (Global). Sundial signs in with it once.
Each account's Data Link
The Trainer ID and Data Link password of every account you want Sundial to run.
Windows
Six steps to your first banked career.
Put Sundial in a folder of its own
Get
Sundial.exefrom the Download page. Sundial keeps your accounts, settings and statistics in folders beside it.Double-click Sundial.exe
The first time, Windows may show Windows protected your PC: choose More info, then Run anyway. A small window opens: that window is Sundial, and closing it stops everything. The dashboard opens in your browser at
127.0.0.1:8780.Sign in with Steam, once
With the Steam account that owns the game. Enter the Steam Guard code if asked. Sundial keeps an encrypted session, so it signs in on its own from then on.
Add your accounts
Under Accounts › Add account: a label, the Trainer ID and the Data Link password. Several at once? Add several takes one per line.
Pick a preset, turn on training
A preset fills the skills to buy and the races in one click. Then turn on Independent Training for the account.
Press Start
Watch the careers bank and the fan totals climb. Closing the browser tab changes nothing: open
127.0.0.1:8780again any time.
While it runs
An empty picker on an account just means Sundial has not visited it yet: open the account and press Visit now.
Updates
Sundial checks for new versions by itself and installs a signed update from Settings › Updates. Roll back on the same page returns to the version you ran before. Your accounts and settings are never touched.
Your data
Accounts, settings, statistics and logs live in folders next to Sundial.exe. Back up that folder and you have backed up everything.
Stuck on a step?
Most answers are one click away.