Updated March 2026
Alertr vs Inventory Planner by Sage: 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. Inventory Planner by Sage also offers forecasting. Choose Alertr if you want simple, focused inventory intelligence at $19/mo (beta).
Feature Comparison
| Feature | Alertr | Inventory Planner by Sage |
|---|---|---|
| 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
Inventory Planner by Sage
Inventory insights to forecast, order and manage stock easily.
Free
Free tier available
Where Alertr Stands Out
- ✓ Slack alerts — get reorder notifications directly in your team channel
- ✓ 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 Inventory Planner by Sage
Inventory Planner by Sage might be a better fit if:
- • You need built-in purchase order management
- • You manage inventory across multiple locations
- • You need barcode scanning for warehouse operations
- • You need advanced demand planning and forecasting
Frequently Asked Questions
Is Inventory Planner by Sage free?
Inventory Planner by Sage offers a free plan.
Can I switch from Inventory Planner by Sage 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 Inventory Planner by Sage?
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.
Other Comparisons
Alertr vs Bee Low Stock Alert & Forecast
Alertr vs Fabrikatör
Alertr vs Hextom: Bulk Product Edit
Alertr vs iAlert - Low Stock Alert
Alertr vs inFlow Connector
Alertr vs Katana
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).
Inventory Planner by Sage offers more advanced features like purchase order management, multi-location support, and 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.
Join the waitlist and be first to know when we launch on the Shopify App Store.
Join Waitlist