Spreadsheet templates that do the math for you.

Marks an invoice overdue the moment its due date passes, then builds the printable invoice out of the row you already logged.

Files every entry into the right quarter from its date, and applies your own deductible percentage per category.

Divides what each client pays by the hours their visit actually eats, and ranks every client by the rate you really earn.

Reads each month's rent against what was paid and calls it Paid, Partial, Due or Late without you deciding.

Starts every task on the later of your planned day and the day after the one it waits for, so when a task slips the finish date moves with it.

Takes marketplace fees, shipping and cost of goods off each order, so profit is the number you actually keep.

Applies the real fee rule -- a flat $2.95 below $15 and 20% at or above it -- so each sale shows what it actually left you, not a flat percentage guess.

Counts down to each post's date, flags what is overdue, and ranks your content pillars by engagement rate.

Counts a day with four subjects as one school day, and tracks days and hours against both of your targets.

Divides by the weight that has actually been graded, so a final you have not sat yet never counts as a zero.

An assignment tracker built as three connected Notion databases you duplicate in one click — the same weighted-grade maths as the spreadsheet.

Keeps your household and your small business apart and joins them at your owner pay, so one page says whether the business earned it and whether the house can live on it.

Projects snowball and avalanche side by side, month by month, to the date each debt finally clears.

Dates every checklist task backwards from your wedding day — move the date and all 22 deadlines move with it.

Names the days of the trip that still have nothing in them, and works the cost out per person, per day.