REZ Back In Stock Notify Me vs While Supplies Lastfor Shopify (2026)
REZ Back In Stock Notify Me and While Supplies Last both address inventory management, but they target very different aspects. REZ focuses on pre-orders and back-in-stock notifications, allowing merchants to capture sales even when products are out of stock by using waitlists, pre-orders with partial payments, and automated restock alerts. While Supplies Last, on the other hand, creates urgency by displaying low inventory alerts on product pages to encourage immediate purchases. The primary difference lies in their proactive versus reactive approach: REZ proactively enables sales during out-of-stock situations, while While Supplies Last reacts to existing inventory to boost sales.
At a Glance
REZ Back In Stock Notify Me
44 reviews
While Supplies Last
9 reviews
Detailed Overview
REZ Back In Stock Notify Me
Sell preorder & backorders with full/part payments. Notify me when out of stock, back in stock alert
Key Features
- Add Preorder or Notify me widget to your products
- Set up pre-order manager, presale, back orders, deposit or partial payment order
- Customize preorder button, restock notification to match your brand
- Automatically send back in stock alerts to waitlist when you restock product
- Use analytics to track demand, forecast inventory, and measure revenue
While Supplies Last
"Only X left in stock— order soon!"
Key Features
- Display low inventory alerts on products or variants
- Get more sales for your store by leveraging scarcity
- Customizable appearance
Feature Comparison
| Rating | 5/5 | 4.9/5 |
Rating REZ Back In Stock Notify Me5/5 While Supplies Last4.9/5 | ||
| Reviews | 44 | 9 |
Reviews REZ Back In Stock Notify Me44 While Supplies Last9 | ||
| Core Functionality | Pre-orders, back-in-stock notifications, partial payments | Low inventory alerts |
Core Functionality REZ Back In Stock Notify MePre-orders, back-in-stock notifications, partial payments While Supplies LastLow inventory alerts | ||
| Target Merchant | Merchants with frequent stockouts or those looking to offer pre-orders | Merchants aiming to increase sales through scarcity marketing |
Target Merchant REZ Back In Stock Notify MeMerchants with frequent stockouts or those looking to offer pre-orders While Supplies LastMerchants aiming to increase sales through scarcity marketing | ||
| Customization | Customizable button and restock notification appearance | Customizable appearance of inventory alerts |
Customization REZ Back In Stock Notify MeCustomizable button and restock notification appearance While Supplies LastCustomizable appearance of inventory alerts | ||
| Analytics | Tracks demand, forecasts inventory, measures revenue | Not specified |
Analytics REZ Back In Stock Notify MeTracks demand, forecasts inventory, measures revenue While Supplies LastNot specified | ||
| Payment Handling | Supports deposit and partial payments for pre-orders | None |
Payment Handling REZ Back In Stock Notify MeSupports deposit and partial payments for pre-orders While Supplies LastNone | ||
| Inventory Management | Handles out-of-stock and pre-order inventory | Focuses on current inventory levels |
Inventory Management REZ Back In Stock Notify MeHandles out-of-stock and pre-order inventory While Supplies LastFocuses on current inventory levels | ||
Our Verdict
For merchants frequently dealing with out-of-stock items or wanting to leverage pre-orders and backorders, REZ Back In Stock Notify Me is the clear choice. Its comprehensive features, including partial payment options and analytics, offer a robust solution for managing inventory and generating revenue. However, for merchants who simply want a quick and easy way to create urgency and encourage immediate purchases based on existing low inventory levels, While Supplies Last is a more straightforward and potentially more cost-effective option. While Supplies Last is best suited for stores that want a simple scarcity tactic without the complexity of pre-order management.
Common Questions
Which app is better for generating revenue from out-of-stock items?
REZ Back In Stock Notify Me is better for generating revenue from out-of-stock items because it supports pre-orders, backorders, and partial payments, allowing customers to purchase items even when they are not currently available.
Does While Supplies Last offer analytics to track the impact of its alerts?
According to the provided information, While Supplies Last does not offer analytics to track the impact of its low inventory alerts.
Which app is easier to set up and use?
While Supplies Last is likely easier to set up and use because it has a more limited scope, focusing solely on displaying low inventory alerts, while REZ has more advanced features requiring more setup effort.
Which app is more suitable for a high-volume store with frequent stockouts?
REZ Back In Stock Notify Me is more suitable for a high-volume store with frequent stockouts due to its comprehensive features for managing pre-orders and backorders, along with its analytics capabilities.
Can both apps be used simultaneously?
While technically possible, using both apps simultaneously might confuse customers. A merchant should carefully consider whether the benefits of combining a focus on 'only X left' with a pre-order option outweigh the potential confusion.
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