9 apps are listed in Custom Blocks on the WordPress marketplace. This benchmark audits the 9 audited apps against the same listing-quality rubric used for every app audit: 6 weighted sections (title, description and content, visual assets, categories and discoverability, technical and support, and languages). Each check passes, warns or fails, and section scores combine into a 0–100 score. AppRanks does not accept payment to influence audit scores, and the rubric is identical for every listing. Weights, every check and the grade bands are documented on the methodology page.
UltraBlocks | Gutenberg Blocks | Page Builder for Gutenberg Editor
Audit score: 53 / 100
Blockenberg — 600+ Advanced Gutenberg Blocks for WordPress Block Editor
Audit score: 51 / 100
Layoutic Blocks – essential native blocks, extensions, and patterns for Gutenberg
Audit score: 51 / 100
Block Designer – Create Custom Blocks for Gutenberg Editor
Audit score: 50 / 100
Mold Blocks – Website Builder for the Block Editor | Gutenberg
Audit score: 50 / 100
GutenWise – Premium Blocks for Block Editor (Amazon Review, Pricing Table, Accordion & More)
Audit score: 48 / 100
Embed Block for Figma
Audit score: 46 / 100
Block Catalog
Audit score: 45 / 100
Inkora Builder
Audit score: 45 / 100
Rubric sections that score below a grade B (under 70) in the category sample — the share of those apps with a gap in each section. A higher share means more of the leading custom blocks apps need work there.