Wave Log Spreadsheet

Records date, spot, board, swell, wind, and tide, then tells you which combination you actually score on. Works in Excel, Numbers, and Sheets.

A store with the Subscriptions add-on can sell this one on a monthly plan, which is also where the Subscriptions add-on shows itself: the buy button reads as a plan rather than a purchase, and the account area grows a Subscriptions screen once you have bought it.