Segwise is a close alternative. Its Creative Strategy Agent answers questions about performance and competitors and develops briefs. Both products connect analysis with ideation. The useful comparison is how you discover an opportunity and verify the reasoning behind it.
Lemon's strongest case: research across three public ad libraries, explicit recent-versus-historical creative context, and briefs that keep their sources attached. Add asset-level mobile reporting and separately enabled cohort forecasting when your growth team needs them.