GrantProbe is a primary-source-verified grant index. We score every program on the same six dimensions, cite every claim back to grants.gov, federalregister.gov, sam.gov, or usaspending.gov, and disclose every affiliate relationship in plain sight.
The application surface is hostile. Grants.gov listed 940 open opportunities on 24 September 2026, with no eligibility filter that actually understands you. The Federal Register publishes NOFOs in legalese. Third-party "grant database" sites sell ranking position, ordering grants for whoever pays rather than for the applicants who need them.
GrantProbe is the opposite. Primary sources only. Eligibility-first ranking. The same six dimensions scored on every program. Disclosed affiliate relationships only on adjacent SaaS tools, never on the grant programs themselves, because federal and foundation grants don't run affiliate programs and we wouldn't take the money if they did.
I built this because my own work, research in computational toxicology (ChemRxiv, OSF) and applied physics, taught me the difference between citing primary sources and relaying secondary ones. Grant data should be held to the same standard.
GrantProbe is one site in the Lattice, a 14-property research-driven niche review network covering grants, freelancer finance, supplements, pet pharmacology, AI tool evaluation, online courses, prescription pricing, FBA seller economics, creator workflow, and remote-work gear. Each site holds itself to the same editorial standard: primary-source verification, disclosed monetization, named reviewer attribution.
The hub at deepsynthesis.org publishes the full lattice constitution, research artifacts, and cross-site authorship graph.