Your Best-Selling Product Sold Out Yesterday.
Your Ads Are Still Running.
You Just Burned $487.
Get instant alerts when your Shopify inventory hits zero but Meta and Google ads keep spending. Stop the bleeding in 90 seconds, not days.
Industry Data: Merchants reduce ad waste by 20-30% with proper inventory-to-ads coordination. StockSentry automates this in real-time.
Tuesday, 6 AM: You Made 43 Sales Overnight
You check Shopify. Revenue looks great. Coffee tastes amazing. Life is good.
Wednesday, 4 PM: Instagram DM
"Ordered your blue hoodie yesterday, just got a refund email saying out of stock. WTF?"
That's when you check:
- Sold out Monday night at 11 PM
- Facebook ads ran for 38 hours straight
- 11 customers ordered something you couldn't deliver
- $487 burned on clicks for a product that doesn't exist
Thursday: You Fix It
You set up Flexify. Configure Shopify Flow. Add catalog rules in Meta.
You did everything "right."
Next Month: It Happens Again
Because even the "proper setup" has a 6-24 hour sync delay.
That's reality. Not a bug. That's how it works.
The Feed Sync Lie
"Meta's catalog sync is notoriously slow even with proper setup. Meta pulls your feed once every 24 hours by default, and even if you force a manual refresh, there is often a 6 to 12 hour lag between your feed updating and ads actually pausing."
Here's What Actually Happens:
Your inventory hits zero in Shopify
Shopify updates instantly ✓
Feed app syncs (1.5 hours later)
Meta processes feed (8 hours later)
Your ads actually pause (9.5 hours total)
In those 9.5 hours:
- Your ads kept running
- You burned $50-300+ (depending on budget)
- More customers ordered unavailable products
- Meta thinks your product "doesn't convert" now
Even if you use:
- Flexify or Feedonomics ($49-99/month)
- Shopify Flow automation (Plus plan)
- Perfect catalog rules
You'll still lose 6-24 hours. Every. Single. Time.
How StockSentry Compares
StockSentry is 96% faster than feed sync delays (90 seconds vs 24 hours).
| Solution | Alert Speed | Platforms | Setup | Cost | Limitation |
|---|---|---|---|---|---|
| StockSentry | 60 seconds | Meta + Google | 2 minutes | $49/mo | Manual pause (90 sec total) |
| Feed Apps (Flexify) | 6-24 hours | Limited | Complex config | $49-99/mo | Sync delays remain |
| Shopify Flow | 1-4 hours | Manual only | Advanced setup | $2,000/mo | Requires Shopify Plus |
| Catalog Rules (Meta) | 6-12 hours | Meta only | Technical | Free | Doesn't help Google |
| Manual Checks | Hours to days | All | None | "Free" | Time = money + human error |
| Doing Nothing | 24-48 hours | N/A | N/A | $$$ wasted | Maximum pain |
StockSentry
Best- Alert Speed
- 60 seconds
- Platforms
- Meta + Google
- Setup
- 2 minutes
- Cost
- $49/mo
- Limitation
- Manual pause (90 sec total)
Feed Apps (Flexify)
- Alert Speed
- 6-24 hours
- Platforms
- Limited
- Setup
- Complex config
- Cost
- $49-99/mo
- Limitation
- Sync delays remain
Shopify Flow
- Alert Speed
- 1-4 hours
- Platforms
- Manual only
- Setup
- Advanced setup
- Cost
- $2,000/mo
- Limitation
- Requires Shopify Plus
Catalog Rules (Meta)
- Alert Speed
- 6-12 hours
- Platforms
- Meta only
- Setup
- Technical
- Cost
- Free
- Limitation
- Doesn't help Google
Manual Checks
- Alert Speed
- Hours to days
- Platforms
- All
- Setup
- None
- Cost
- "Free"
- Limitation
- Time = money + human error
Doing Nothing
- Alert Speed
- 24-48 hours
- Platforms
- N/A
- Setup
- N/A
- Cost
- $$$ wasted
- Limitation
- Maximum pain
Even "Instant" Alerts Have a Problem
Let's say you get alerted instantly. Perfect, right?
Not quite:
Inventory hits zero
You get alert (60 seconds ✓)
You click "pause" (4 minutes, not bad)
Ads actually stop running (25 minutes later)
Why the delay?
Ad platforms don't pause instantly. They process pause requests in batches every 15-30 minutes.
In those 30 minutes after you click pause:
- •You might spend another $20-50
- •You might sell 3 more units you don't have
- •You're stressed, refreshing, hoping it stops
Our Solution: Buffer Zones
Expert-Recommended: Alert BEFORE hitting zero
"If you know a product tends to sell out fast when ads are running, you need to set inventory alerts at least 20 percent above zero. When stock drops below that threshold, pause or dramatically reduce ad spend on that SKU manually while your feed catches up."
Why this matters:
Even when you pause ads immediately, platforms take 15-30 minutes to actually stop spending. This "platform delay window" means you'll sell 3-5 more units after clicking pause.
StockSentry implements this expert best practice automatically.
What if you got the alert BEFORE hitting zero?
With StockSentry Buffer Zones:
Inventory drops to 5 units (your buffer)
ALERT: "Blue Hoodie low stock, ads still running"
You pause ads
Ads actually stop (30-min platform delay)
Inventory hits zero | ✓ PROTECTED
Result: Zero wasted spend on unavailable inventory.
You set the buffer: 5 units for fast movers, 1 unit for slow movers, 20 units for your bestseller. Your call.
Instant Alerts. Direct Links. 90-Second Fix.
How StockSentry Works
Connect Your Accounts
(2 minutes)
- Authorize Shopify (read-only)
- Authorize Meta Ads (read-only)
- Authorize Google Ads (read-only)
We Monitor in Real-Time
- Shopify webhooks notify us instantly
- We check which products have active ads
- Buffer zones give early warning
- Cross-reference multiple data points
You Get Alerted Instantly
- Email alert (60 seconds)
- SMS alert (Pro plan)
- Slack notification (Pro plan)
Pause the Ad
(30 seconds)
- Direct links to Meta Ads Manager
- Pre-filtered to exact campaign
- Manual pause (one click)
- Dashboard tracks money saved
Dashboard Preview Coming Soon
Real-time alert dashboard showing active ads on low/out-of-stock products with one-click action links and money-saved tracking.
How Much Are You Losing Right Now?
Industry Research: Merchants can reduce ad waste by 20-30% with proper inventory-to-ads coordination. Most lose money because they don't know stockouts are happening until it's too late.
Calculate Your Monthly Ad Waste
You're losing:
$0/month
StockSentry costs:
$49/mo
You save:
$0/mo
Pre-filled example: $200/day ad spend × 2 days to notice × 3 stockouts/month = $1,200 wasted per month
Real Merchants. Real Problems. Real Solution.
These are actual problems from Shopify merchants on Reddit. StockSentry solves every single one.
"Happened to us last month, our top-selling product sold out but ads kept spending for 2 days. Anyone found a clean way to sync ads with inventory?"
→ StockSentry solves this:
Alert in 60 seconds via webhook. Direct link to pause campaign in 30 seconds. Total: 90 seconds vs 2 days.
"I'm running a small Shopify store (a few dozen products, lots of variants), and I'm finding it really easy to lose track of low inventory. Ideally, I'd love something that gives a simple daily summary or alert before things run out."
→ StockSentry solves this:
Buffer zones alert you at 5-20 units (before zero). Plus instant Slack notifications when ads are at risk.
"Two days of wasted spend on out of stock items is painful... Meta's catalog sync is notoriously slow even with proper setup. Meta pulls your feed once every 24 hours by default, and even if you force a manual refresh, there is often a 6 to 12 hour lag."
→ StockSentry solves this:
Bypasses feed sync entirely. Real-time Shopify webhooks + instant alerts = 90% of the problem solved without expensive feed apps.
"I've dealt with this exact issue across multiple stores... The quick fixes everyone mentions like feed apps and Shopify Flow are good starting points, but they have sync delays that can still cost you. Meta's catalog sync can take 6-24 hours even when working perfectly."
→ StockSentry solves this:
Real-time webhook alerts (not batch sync). Know in 60 seconds, pause in 30 seconds = 90 seconds total vs 6-24 hours.
Everything You Need. Nothing You Don't.
Powerful features that save you thousands in wasted ad spend.
Real-Time Monitoring
- Instant Shopify webhooks (not slow polling)
- Know within 60 seconds of stockout
- No sync delays
Buffer Zone Protection
- Alert at 5 units, not 0
- Customize per product (1-50 units)
- Avoid the 'sold 3 more before pausing' problem
Multi-Channel Alerts
- Email (instant, all plans)
- SMS (Pro plan)
- Slack (Pro plan)
- Webhook (Pro plan)
Money-Saved Dashboard
- Track prevented waste
- See ROI clearly
- Export reports for accounting
Works With Your Ads
- Meta Ads (Facebook/Instagram)
- Google Ads (Shopping, Performance Max, Search)
- Coming soon: TikTok Ads
One-Click Action Links
- Direct links to Meta Ads Manager (pre-selected campaign)
- Direct links to Google Ads Dashboard (filtered to product)
- Manual pause takes 30 seconds
- Coming Q1 2025: Automatic pausing
Simple Pricing. Serious Savings.
Stop wasting ad spend on out-of-stock products. Choose the plan that fits your store size and save thousands in wasted ad spend.
Starter
Perfect for growing stores
- 1 Shopify store
- Up to 100 products monitored
- Email alerts (60-second delivery)
- Buffer zones (5 units default)
- Meta + Google Ads support
- 7-day alert history
- Standard support
Pro
Perfect for established stores
- 1 Shopify store
- Unlimited products
- SMS + Slack + Email alerts
- Custom buffer zones (1-50 units)
- Priority alerts (<60 seconds)
- 30-day alert history
- Webhooks for custom integrations
- Priority support (4-hour response)
Agency
Perfect for managing client stores
- 5 client stores included
- Unlimited products per store
- White-label reports
- API access for custom dashboards
- Multi-store overview dashboard
- Dedicated Slack channel
- Onboarding call + setup help
Frequently Asked Questions
Everything you need to know about StockSentry
Can't I just use Shopify's low-stock alerts?
Shopify alerts tell you when inventory is low. We tell you when your ads are actively spending money on out-of-stock products. You might get the Shopify alert at 10 AM but forget to check which ads need pausing until 3 PM. That's 5 hours of waste. We cross-reference inventory with active ads and give you one-click links to pause immediately.
Don't feed apps like Flexify solve this?
Feed apps help with product catalogs, but they can't solve the sync delay problem. Feed apps sync every 1-4 hours, then Meta/Google processes feeds every 6-24 hours (total delay: 7-28 hours minimum). StockSentry uses real-time Shopify webhooks + instant alerts + buffer zones so you can pause ads before wasting money.
Do you pause my ads automatically?
Not yet - we're in API approval process with Meta and Google. Right now: you get alerted within 60 seconds, click our direct link, and pause in 30 seconds (90 seconds total). Still 1,000x faster than 24-48 hour feed delays. Auto-pause launches Q1 2025 for all existing customers (no price increase).
What if I'm asleep when I get the alert?
The alert will be waiting when you wake up. Even a 6-hour delay (overnight) is way better than the 24-48 hour delay of standard feed syncs. Pro tip: Use buffer zones. Set alerts at 10 units for products that sell fast. You'll wake up with inventory left and can pause before hitting zero.
Stop Losing Money Today
Industry data shows 20-30% of ad spend is wasted on poor inventory-to-ads coordination.
Without StockSentry:
- • Find out 24-48 hours later (feed sync delays)
- • Lose $300-800 in wasted ad spend
- • Disappoint customers who tried to order
- • Damage your ad account quality scores
- • Lose product momentum and rankings
With StockSentry:
- • Alert in 60 seconds via webhook
- • Direct link to pause campaign
- • Pause ads in 30 seconds (90 seconds total)
- • Save $300-800 per stockout
- • Protect customer experience
- • Maintain product rankings
Here's What Happens Next:
Questions? help@stocksentry.app