Know exactly when your
next pen arrives.

YorviCalc uses your remaining needles and injection schedule to forecast every New Pen Day across your treatment horizon — no spreadsheets, no guesswork.

Start Date

Defaults to today. Change only if forecasting from a past or future date.

Are you currently mid-pen?

Needles remaining (exclude spare)

Enter 1 – 14.

Have you injected today? Yes — today's dose is done

Cycle length

Know exactly when yournext pen arrives.

Your Forecast

Know exactly when your
next pen arrives.