How We Rank — Our Methodology
Every provider on WeightLossRankings is evaluated using a structured scoring system. Each provider is assessed across six weighted dimensions, and scores are computed algorithmically to produce an overall rating out of 10. The algorithm is applied uniformly to every provider — a paid partner does not receive a higher score than a non-partner. Below is a full breakdown of each dimension and what it measures.
Value
25%Price relative to category average, cost transparency, hidden fees
Effectiveness
25%Clinical evidence, published weight loss outcomes, and clinical trial data
User Experience
15%App quality, onboarding flow, website experience, and customer support responsiveness
Trust & Safety
15%FDA compliance, medical oversight quality, pharmacy verification, and company transparency
Accessibility
10%State availability, insurance acceptance, FSA/HSA eligibility, and shipping speed
Support
10%Access to dietitians, coaching, community features, and quality of follow-up care
Scores vs. Placement
Our scoring algorithm determines how a provider is rated. Commercial relationships do not influence the score a provider receives — the same formula is applied across every provider on the site, regardless of whether they are a paid partner.
Placement is separate. Commercial relationships may influence where a provider appears beyond its algorithmic score — for example, featured homepage placements, highlighted cards in the comparison tool, or blog coverage. This is common practice among affiliate comparison sites and is disclosed in full on our Affiliate Disclosure page. Providers without an affiliate arrangement are still evaluated and ranked using the same methodology.
Scores are updated when new clinical data, pricing changes, or service quality shifts are identified. If you find a score that seems out of date or inaccurate, please let us know.