Carbon - Macro Coach & Tracker

What it does

Carbon is a nutrition and diet coaching app designed to help users achieve their fitness goals. It focuses on macro tracking to create flexible, sustainable eating plans for weight loss or muscle gain.

Where it shines

The app's onboarding is a masterclass in directness. It quickly establishes credibility with testimonials at 00:01 before showcasing clear, outcome-focused benefits like sustainable weight loss (00:03). The transition from this value proposition directly to account creation at 00:08 shows a clear focus on converting high-intent users.

UX highlights

The onboarding carousel (00:01-00:07) effectively communicates core benefits without overwhelming the user.
The account creation screen (00:08) is clean and reduces friction by offering social login options with Apple and Google.
Micro-interactions like the loading spinner within the "Create account" button (00:25) provide clear feedback.
The paywall (00:37) clearly visualizes the value of longer subscriptions by showing percentage savings and a lower monthly cost.
The UI is minimal and uses a calm color palette, focusing the user's attention on key actions.

Monetization & growth

The app uses a hard paywall presented immediately after account creation (00:37). There is no free trial shown in this flow. It offers three subscription tiers (Monthly, 6 Months, Yearly) and encourages longer commitments with explicit discounts ("Save 17%", "Save 33%").

Who it’s for

This app appears to be for individuals serious about tracking their nutrition and macros for specific fitness goals like weight loss or body composition changes. It likely appeals to users familiar with dieting concepts who want a structured, data-driven tool.

Notes & opportunities

The direct path to sign-up and a paywall could be a point of friction for users who want to explore the app first. While it filters for committed users, it might benefit from a limited "guest mode" or a more interactive quiz to demonstrate personalization before asking for commitment. The extended "Logging in..." screen (00:29-00:37) could also be a drop-off point if it consistently takes a long time.