About
Synapse is a social media cross-posting and scheduling app. You write a post once, tick which connected accounts should get it, and Synapse publishes to every one of them and tells you what landed.
It posts to nine networks: X, LinkedIn, Instagram, Facebook, Threads, TikTok, YouTube, Pinterest, and Bluesky. You can connect several accounts on the same platform, so people running multiple brands work out of one composer instead of nine tabs.
How it works: write the caption in one box, override it per platform where a network needs something different, attach images or video from your media library, then publish now, schedule it, or let Synapse pick the time. Bulk tools queue a month of posts in one pass.
Results are tracked per account rather than per post. If eight accounts publish and one fails, you see which one and why, and you retry only that account. Nothing gets posted twice.
What you get:
Nine integrations built directly on the official platform APIs, not a reseller wrapper
Several accounts per platform, with per-platform caption overrides
Scheduling, a monthly calendar, auto-publishing, and bulk upload
My Voice, an AI caption writer that learns your style from sample captions you paste, then drafts one caption per platform
Studio: designer, background remover, collage maker, watermark, filters and effects, templates, GIF maker, and a video editor
Private per-user media library
Analytics dashboard (beta)
Public REST API and an MCP server, so you can post from a script or from an AI assistant
Team workspaces with per-member permissions on Growth and Pro
Pricing is flat, not per channel. Starter is $7/month for 5 connected accounts, Creator is $19/month for 15 connected accounts, Growth is $39/month for 50 accounts plus team members, and Pro is $79/month for unlimited accounts. Yearly billing includes one to two months free. Every plan starts with a 7-day free trial. Synapse is built and run by a solo founder in Singapore, in public.