Prove It - Supplement Scanner

What it does

Prove It is a supplement analysis app designed to bring clarity and safety to the often-confusing world of health supplements. The app's core function is to scan supplement labels and provide research-based ratings on their ingredients. It helps users understand the efficacy of what they're taking, find safer alternatives, and avoid wasting money on products with unsubstantiated claims or hidden toxins.

Where it shines

Prove It excels at building trust and demonstrating its value through an exhaustive and educational onboarding process. Rather than just asking generic questions, the app intersperses its quiz with 'Did you know?' facts from credible sources like Harvard Health Publishing and the CDC (01:02). This immediately establishes the app as an authority. The flow culminates in a unique 'Pledge of Commitment' where the user physically signs their name (02:01), a powerful psychological hook that creates a sense of personal investment right before the paywall appears.

UX highlights

Interactive Quiz Inputs: The app uses varied and polished input methods during its quiz, such as segmented sliders for monetary values (00:36) and clean toggle buttons for multiple-choice questions (00:52), making the long process feel less tedious.
Personalized Data Reflection: Before asking for payment, the app presents personalized 'consumption' and 'spending' results (01:37), using the user's own data to frame the problem the app solves.
Strategic Social Proof: Testimonials and star ratings are deployed late in the onboarding flow (01:48), reinforcing the app's credibility just before the final commitment and purchasing decision.
Clear Value Proposition: Screens before the paywall (02:06) use a simple checklist format to clearly articulate the benefits of the subscription, such as 'Research-based ratings' and 'Find hidden toxins'.
Commitment Signature: The signature pad (02:01) is a standout interaction. It turns a passive agreement into an active, memorable commitment.

Monetization & growth

The app uses a hard paywall at the end of its onboarding sequence (02:38), meaning users cannot access the core functionality without subscribing. It presents multiple plans, including a lifetime option, which are browsable via a horizontal carousel. The paywall emphasizes a large discount ('65% Off Sale') and uses scarcity ('8 spots remaining') to create urgency. By making the onboarding so thorough and value-driven, Prove It attempts to justify the lack of a free trial, banking on the trust and commitment it has built up over the first two minutes of use.

Who it’s for

Prove It is for health-conscious consumers who are either current or prospective supplement users. This includes fitness enthusiasts, individuals with specific health concerns, and anyone skeptical of the supplement industry's marketing claims. The app appeals to users who value scientific evidence and transparency and are willing to invest in a tool that helps them make safer, more effective health decisions.

Notes & opportunities

While the onboarding is very effective at building trust, its length and the immediate system permission prompts for notifications and tracking (00:02, 00:09) could be a point of friction and cause early drop-off for some users. Delaying these prompts until the user understands the app's value could improve retention. Additionally, the value proposition of 'scanning' is heavily emphasized, but the user never gets to try this core feature, which might be a missed opportunity to provide a moment of 'magic' before the paywall.