Scope a Lean MVP

Background: I have a full feature list for a [app type] but limited time
([timeframe]) and I'm building [solo / with a small team] in
[SwiftUI / Compose / both].

Use case: Cut this down to a true MVP—the smallest version that delivers
the core value and is worth shipping to real users.

Full feature list:
[Paste your feature list]

Implementation details: Be ruthless. For every feature, decide: ship in
MVP, defer to v2, or cut. Account for the hidden cost of mobile features
(account systems, push notifications, in-app purchase review, sync).

Deliverable:
1. The MVP feature set, with a one-line justification for each inclusion
2. What's deferred to v2 and why it can wait
3. What's cut entirely
4. The single riskiest assumption the MVP is testing
5. A rough build-effort ranking (S/M/L) for each MVP feature