Home / Tools / Expense calendar

Expense calendar

Plan and track expenses day by day on a calendar. Works offline and keeps everything on your device.

Open the tool

What it does

Most budgeting apps answer “what did I spend?”. The more useful question on a tight income is “what’s due before the next pay cheque?”, and a calendar answers that at a glance.

Who can use it

  • Anyone planning monthly bills
  • Students and newcomers budgeting on a tight income
  • Freelancers with irregular income

Where it fits

  • Phone or laptop, online or offline

How to use it

  1. Open it and add it to your home screen if you like
  2. Add expected bills and income to their dates
  3. Tick them off as they're paid
  4. Check the month's balance

Limitations

  • Data lives in one browser, so clearing it or switching devices loses it unless you export
  • No bank connection

What's next

  • Pull expected bills from Google Calendar and phone or laptop calendars
  • Export and import a backup file

Run it on your own data

  1. In the browser (today)Free, no sign-up. What you enter stays on your device. Good for trying it and for small teams.
  2. On your files or databasePoint the same logic at your exports or a database view (PostgreSQL, SQL Server, Azure SQL or DuckDB), on your own machine or network.
  3. As a pipeline and warehouseA scheduled ETL job pulls from your systems (reservations, point of sale, inventory, payroll) into a star-schema warehouse, runs data-quality checks, and the tool or a Power BI report reads the result every morning.

What that adds here

  • Optional sync through your own storage so phone and laptop share one calendar

How I'd set it up for you

I'd map your exports or database to the tool's model, package the job in a container that runs on your server or cloud account, add the checks your data needs, and hand over the code and a runbook. Your data stays on your systems. Get in touch if you'd like it fitted to your business.

Updates

No logged updates yet. Changes to this tool will appear here and in the activity log.