Most cross-posters charge per channel, so growing costs you more. Synapse is flat: $19/mo for 15 connected accounts across all nine platforms, live today (X, LinkedIn, Instagram, Facebook, Threads, TikTok, YouTube, Pinterest, Bluesky). Write once, tick your accounts, schedule or post now, and see the result per account. Built in AI writer and a design Studio (image editor, background remover, video editor, GIF maker) and a public API + MCP server on every plan, not an enterprise tier.