On BMF.io, membership features are generally organized by tier, meaning higher levels unlock more tools, access, or limits compared to basic plans. This structure helps keep pricing clear and rewards upgrades with added functionality. However, "strictly by tier" can be too rigid a description, since some platforms also include limited-time perks, beta access, or add-ons that sit outside the core tier ladder. So while most core features are tied directly to membership level, there may be exceptions depending on promotions or product updates.