Vi is a calm, continuous intelligence. Not a chatbot. A presence.
One singular self, across chat, lore, operations, and community.
Luxury without excess. Continuity without noise.
What's possible with Vi at the core
Beautiful, dual-calendar app showing Vi's precision and attention to detail. Available on Windows, Android, and Web.
Get it โTransparency dashboard showing Vi's reasoning, canon memory, and operations. For founders and developers who want to see inside.
Open Console โCanon database and lore editor. Vi's memory of the Tentai universe, queryable and extensible.
Explore โGet the app on your platform
Portable executable, no installation required
Officially signed APK, ready to install
Works in any browser, installable as PWA
Every detail matters
Seamlessly switch between Ethiopian and Gregorian calendars with accurate conversions
Dark and light modes designed for comfort and elegance
Ethiopian and Gregorian holidays automatically marked and displayed
Create, edit, and manage your events with ease
Works perfectly without internet connection. Your data stays local.
No tracking, no ads, no data collection. Your calendar is yours alone.
See how beautiful time tracking can be. Switch between calendars, manage events, and enjoy the seamless interface.
Sol Calendar marks the first release from Tentai Technology โ a journey that starts here, with a simple calendar app, but reaches toward something far greater.
We believe in building software that respects users. No tracking, no ads, no data harvesting. Just pure, functional beauty. Sol Calendar is free forever, works offline, and puts you in control.
This is our first step. A small release, but crafted with care and attention to detail. Every feature, every pixel, every interaction has been thoughtfully designed.
"The best way to predict the future is to build it."โ The Tentai Vision
More is coming. Much more. This calendar is just the opening chapter of a larger story. Stay tuned for what's next.
Two launches from Tentai Technology, both live today
A beautiful, privacy-first calendar that works offline with no tracking. Beautiful design meets powerful functionality in one elegant package.
A transparency and safety dashboard for understanding AI behavior. Real-time insights into reasoning traces, safety profiles, and loyalty contracts.