Pillow: Sleep Tracker

Verdict

Pillow tracks sleep patterns and heart rate with a clean interface, but most of its core features and even basic access to your own data sit behind a subscription paywall, and a meaningful share of reviewers report tracking data going missing or accuracy problems.

Best for

Someone who already wants a subscription-based sleep app and mainly cares about a polished interface and heart-rate-based alerts, not someone looking for a one-time purchase.

Dealbreaker

A large share of reviewers say the app locks basic tracking and your own sleep data behind a paywall, and a smaller but real group reports missing tracking data, crashes, or unresponsive customer support when refunds are requested.