Reminders. One a day at a time you choose, and never on a day you have already trained or a week you have already finished. Nothing arrives until you allow notifications, and the app only asks after your first lesson. Why this works. The principle behind each lesson, folded under the steps and out of the way until you want it. Your dog's age now changes what the app says as they grow. Adolescence gets its note when it actually arrives, instead of once at setup. Cautions where a movement asks something of a body: an older dog's joints, a big puppy's growth plates. Never a lock, always a caution, and only where the app knows enough to mean it.