Mercurius is a simple tool for data collection, time tracking, lifelogging, etc.
It basically serves as a quick gateway to Google Sheets with a handful of built-in tools to manage data.
Track anything, anywhere, anytime in one click using user-defined templates.
Straightforward time tracking using built-in timers.
Simple and quick mobile access to Your spreadsheets.

Mercurius operates directly over your Google Sheets files. This way your data safely and transparently stored on the Google side, in your total control.
Nothing is sent or stored on Mercurius servers.

No hidden fees ‒ free.
No limited access to Your own data ‒ transparent.
No arbitrary third-party data formats ‒ flexible.
No registration required ‒ standalone.
No data shared with third parties ‒ private.
No clicks through dozens of menus ‒ accessible.
No time wasted ‒ quick.
Lists ‒ ❤

Basic set of spreadsheet functionality supported:
- Create, edit and view spreadsheets.
- Enter, sort and filter data of any kind (text, numeric, dates, etc.).
- Use formulas, time and dates tools.

Good choice for: budgets, to-do lists, habit tracking, task lists, questionnaire, check lists, counting, finance tracking, schedules, accounting, action logs, door-to-door surveys and many more.

Designed to replace paper notebooks, simplify digital notebooks and increase data collection speed.
Powerful, yet easy to use data management tool.