Mastery map

–day streak

–total XP

–due for review

Headshot

Caddy

Peek

Actors, @MainActor, Sendable

async/await, Task, cancellation, TaskGroup

@Model, relationships, ModelContainer

Schema versioning and migrations

Extensions, App Groups, shared containers

Firestore sync, App Check, conflict handling

Capture session, Vision requests, Core Image

Live Activities, WidgetKit timelines, AppIntents

On-device LLM sessions, guided generation

StoreKit 2, RevenueCat, entitlements, paywalls

Kit packages, MV pattern, DI, testability

UserNotifications, background refresh

Empty: not startedDeeper color: stronger (EMA of lesson scores)Hatched: not in this app