Instant Heart Rate vs The 4-Hour Body App
A side-by-side look at Instant Heart Rate and The 4-Hour Body App. For an in-depth review of either product, follow the links below.
Instant Heart Rate
Sport & Health
Instant Heart Rate is an app that uses your phone's camera to measure your heartbeat. It works by detecting subtle color changes in your finger that occur when blood flows through it. The app is free, easy to use, and provides a quick way to check your pulse rate.
heart-ratehealthfitness
The 4-Hour Body App
Sport & Health
The 4-Hour Body App is a health and fitness tracker inspired by the book The 4-Hour Body by Timothy Ferriss. It allows users to log diet, exercise, and other metrics to optimize physical performance and weight loss.
healthfitnesstrackingweight-loss
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