Phase A1 validated — 351ms sync latency

Real-time inventory.
Zero overselling.

When your TikTok goes viral, polling-based inventory apps fail within the first hour. Sync360 uses webhooks to propagate every stock change across all channels in under 500 milliseconds — before the next order hits.

351ms
avg sync latency
0
polling cycles
$0
oversell cost

No spam. First to know when TikTok Shop goes live.

The problem

A viral TikTok video breaks your inventory in 2 hours

Every existing sync app polls inventory every 5–15 minutes. That gap is fine for steady traffic. It is catastrophic when 50,000 people hit your store in 90 minutes.

T+0:00
Video goes viral on TikTok
50,000 views in the first hour
T+0:03
Orders start flooding in across Shopify and TikTok Shop
Both channels show 100 units available
T+0:10
Your sync app last polled 8 minutes ago
TikTok Shop still shows stale stock
T+0:15
You oversell 40 units
Cancellations, refunds, and marketplace penalties
With Sync360
Every order triggers a webhook in 351ms
All channels updated before the next sale

How it works

Webhook-first. Not polling.

Sync360 listens to inventory webhooks from every channel. When stock changes, we propagate it everywhere in under 500ms.

Step 1

Order placed

Shopify or TikTok Shop fires an inventory webhook the moment stock changes.

Step 2

Queue + conflict check

BullMQ processes the event. Vector clocks resolve concurrent updates cleanly.

Step 3

All channels updated

Every connected channel gets the correct quantity in under 500ms. Overselling blocked.

Pricing

Simple, channel-based pricing

Billed monthly through your Shopify invoice. Cancel anytime.

Starter
$49/mo
2 channels
  • Shopify + 1 channel
  • Webhook-first sync
  • 30-day sync history
  • Email alerts
Unlimited
$149/mo
Unlimited channels
  • All channels
  • Priority support
  • 1-year sync history
  • Custom safety buffers
  • API access

Stop overselling. Start syncing.

Join merchants already on the waitlist. TikTok Shop support going live soon.