Marcos Rodrigues
Performance Marketing Researcher
Marcos Rodrigues is the lead researcher and editorial reviewer at ULBR Ads. With more than a decade in performance marketing across Google Ads, Meta and affiliate ecosystems, he built the six-step evaluation framework that underpins every review on the site. Marcos personally reviews and fact-checks each published article, ensuring rankings reflect evidence rather than incentives.
Reviewed & fact-checked by Marcos
10As lead researcher, Marcos reviews and fact-checks every article published on ULBR Ads.
Best Magnesium Supplements
We compared magnesium forms, doses and third-party testing to find the supplements most likely to help with sleep, stress and muscle recovery.
Best Probiotics
Strain specificity, CFU counts and shelf stability separate genuinely useful probiotics from expensive placebos. Here is how the leaders compare.
Best Collagen Supplements
Peptide type, sourcing and added actives determine whether a collagen supplement is worth it. We break down what the research supports.
Best Joint Support Supplements
From glucosamine to collagen and omega-3s, we assess which joint-support ingredients have evidence and which are riding on reputation.
Best Testosterone Boosters
Most 'boosters' overpromise. We separate the ingredients with real evidence — like vitamin D and zinc when deficient — from the marketing.
Best VPN Services
We weighed independently audited no-logs policies, speed, jurisdiction and price to find the VPNs that respect both your privacy and your bandwidth.
Best Password Managers
Zero-knowledge encryption, transparent audits and cross-platform ease decide the best password managers. Here is how the leaders stack up.
Best AI Writing Tools
Output quality, data privacy, editing control and price separate genuinely useful AI writing tools from novelty apps. We compare the leaders.
Best Email Marketing Platforms
Deliverability, automation depth, pricing at scale and ease of use define the best email platforms. We compare where each one actually wins.
Best CRM Software
The right CRM matches your sales process, not the other way around. We compare usability, automation, integrations and true cost of ownership.