Updated March 2026
Alertr vs Amp Back in Stock | PreOrder: Which Inventory App Is Right for You?
An honest comparison of features, pricing, and fit for Shopify merchants.
Quick Verdict
Alertr is built for DTC brands with 100-2000 SKUs that need daily sell rate tracking and automated reorder alerts. Amp Back in Stock | PreOrder focuses on Built to handle high SKU volumes and fast-moving catalogs with back in stock alerts and preorders via email, SMS, and push notifications. Choose Alertr if you want simple, focused inventory intelligence at $19/mo (beta).
Feature Comparison
| Feature | Alertr | Amp Back in Stock | PreOrder |
|---|---|---|
| Low stock alerts | ✓ | ✓ |
| Reorder suggestions | ✓ | ✗ |
| Forecasting | ✓ | ✗ |
| Purchase order management | ✗ | ✗ |
| Multi-location | ✗ | ✗ |
| CSV export | ✓ | ✗ |
| Email alerts | ✓ | ✓ |
| Slack alerts | ✓ | ✗ |
| Demand planning | ✗ | ✓ |
| Purchase orders | ✗ | ✗ |
| Barcode scanning | ✗ | ✗ |
| Sell rate tracking | ✓ | ✗ |
| Days of stock estimate | ✓ | ✗ |
| Configurable thresholds | ✓ | ✗ |
| Custom alert frequency | ✓ | ✗ |
Pricing Comparison
Alertr
Inventory forecasting & low stock alerts via email and Slack
$19/mo (beta)
$29/mo after beta
Free tier: up to 50 SKUs
14-day free trial on Pro
Amp Back in Stock | PreOrder
Capture Sales with Back in Stock Alerts and Preorder Options that Notify Customers on Restock alerts
$49/mo
Small Business plan (comparable features)
Plans from $19/mo
Free tier available
Where Alertr Stands Out
- ✓ Slack alerts — get reorder notifications directly in your team channel
- ✓ Sell rate tracking — know exactly how fast each SKU moves
- ✓ Days of stock estimates — see when each SKU will run out
- ✓ Beta pricing at $19/mo locked in forever (vs $29/mo at launch)
- ✓ Free tier with up to 50 SKUs — no commitment to try
When to Choose Amp Back in Stock | PreOrder
Amp Back in Stock | PreOrder might be a better fit if:
- • You need advanced demand planning and forecasting
Frequently Asked Questions
Is Amp Back in Stock | PreOrder free?
Amp Back in Stock | PreOrder offers a free plan.
Can I switch from Amp Back in Stock | PreOrder to Alertr?
Yes. Install Alertr from the Shopify App Store, and it will sync your inventory data automatically. No data migration needed — Alertr reads directly from your Shopify store.
Does Alertr offer a free trial?
Yes. Alertr Pro includes a 14-day free trial. No credit card required to start.
What makes Alertr different from Amp Back in Stock | PreOrder?
Alertr focuses on sell rate tracking and automated reorder alerts for DTC brands. It calculates how fast each SKU is selling and tells you exactly what to reorder and when.
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Alertr vs Inventory Planner by Sage
The Bottom Line
If you're a DTC brand with 100-2000 SKUs and want straightforward inventory forecasting without paying enterprise prices, Alertr is worth trying. It tracks sell rates per SKU, estimates when products will run out, and sends reorder alerts automatically — all for $19/mo (locked in forever for early adopters).
Amp Back in Stock | PreOrder offers more advanced features like demand planning — but at a higher price point. The right choice depends on whether you need those extras or whether focused forecasting and alerts at a lower price gets the job done.
Both apps install directly from the Shopify App Store. Alertr offers a free tier (50 SKUs) and a 14-day trial on Pro, so you can test it with real data before committing.
Try Alertr — Inventory forecasting and reorder alerts. Free tier available, no credit card required.
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