Lifeline comes in two plans: Basic, which is free, and Pro, a one-time purchase that unlocks the tracking, review, and calendar features. There is no subscription.

Basic (free)

Everything you need for a solid Pomodoro practice:

Pro (one-time payment)

Pro is a one-time payment of $9.99 (US), not a subscription, and it stays with your Apple ID. Prices in other regions are set by the App Store. It unlocks:

How to upgrade

Choose Upgrade to Pro from the menu-bar dropdown, or open Preferences > Account, then choose Buy Pro. The purchase goes through the App Store with your Apple ID.