01 · World clocks
Every place, right on time.
Keep the cities that matter together, with a large local clock and simple time conversion.
MoonStatMoonStat for macOS
Your Mac.
Calm, capable, and clear.
A configurable desktop for the information and tools you use every day. Completely free, account-free, and license-free.
For macOS 14 or later · Designed and built in Tokyo
Free.Every MoonStat feature.
Account-free.Nothing to create or sign into.
License-free.No key, activation, or subscription.
Your desktop, your way
Only what matters.
Exactly where you want it.
Move every module between the left and right sides, arrange its order, and choose a light or dark appearance for your wallpaper.
02 · Moon & tides
The sky, calculated locally.
Phase, illumination, lunar age, distance, rise and set times—with optional official tide predictions where available.
03 · Calendar
The month, minus the clutter.
A localized monthly calendar with editable local entries and optional Apple Calendar sync.
04 · Weather & radar
Forecasts that understand where you are.
Worldwide weather, JMA-issued forecasts and precipitation radar in Japan, plus a useful twelve-hour umbrella indicator.
05 · System health
Know how your Mac is doing.
CPU, memory, disk, battery temperature, thermal state, and long-term thermal history—sampled locally.
06 · Notes
Leave the thought where you can see it.
A persistent, independently placed desktop note that grows naturally with its contents.
07 · AI chat
Your model. Your key. Direct.
Optional OpenAI, Anthropic, or xAI chat using your own key. MoonStat never proxies or stores the conversation.
08 · Vocabulary study
A new word, ready when you are.
Bilingual study cards, four difficulty levels, example sentences, and optional provider-generated voice.
09 · Keep awake
Let your machine work while you move.
Start a timed or indefinite keep-awake session with thermal safeguards, clear controls, and immediate restoration when it ends.
SESSION ACTIVE02:00:00Battery temperature 31°C
Thermal state
Nominal
Private by design
No MoonStat account.
No analytics.
No cloud dashboard.
Your configuration, notes, calendar entries, and thermal history remain on your Mac. Optional third-party AI tools connect directly using keys kept in the macOS Keychain.
Read the privacy promiseFree means every feature, for everyone.
There is no subscription and no Pro version. If MoonStat helps, you can support its continued development voluntarily.
Support MoonStat