RoboBack In Stock vs WZ Back In Stock
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 4, 2026 for RoboBack In Stock, Nov 5, 2026 for WZ Back In Stock.
The short answer
- Both list a free plan. Paid plans start at $3/month for RoboBack In Stock and $9.99/month for WZ Back In Stock.
- WZ Back In Stock lists 10 features RoboBack In Stock’s listing doesn’t mention, including Auto-alerts, Inventory tracking, Low stock.
Head to head
- Japan
- United States
Free
- · 50 restock alerts per month
- · All features included
- · Unlimited waitlist signups
Pro
- · 1,500 restock alerts per month
- · 14-day free trial
- · All features included
Plus
- · 14-day free trial
- · 5,000 restock alerts per month
- · All features included
Free
- · 50 restock email notifications/month
- · Basic button and form customization
- · Basic reports
- · Email sender setup
- · Storefront notify popup
- · Unlimited waitlist signups
Lite
- · 500 restock email notifications/month
- · Alert email template customization
- · Basic reports
- · Button and form customization
- · Delivery logs
- · Gmail/SMTP email sender
Startup
- · 1,000 restock email notifications/month
- · Advanced customization
- · Everything in Lite
- · Low-stock alerts
- · Recovered revenue tracking
- · Reports by product/variant
Business
- · 5,000 restock email notifications/month
- · Everything in Startup
- · Higher notification volume
- · More low-stock alert capacity
- · Priority-ready plan for growing stores
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureTurn sold-out product pages into a waitlist. Add a floating or inline notify-me button with no theme code, or a form block, in your colors. Shoppers confirm their email, so only consenting addresses join. When stock returns, the app rechecks availability and emails each person once, in the storefront's language, with one-click unsubscribe.
Back In Stock helps Shopify merchants capture demand when products or variants sell out, then notify interested customers as soon as inventory returns. The app adds a notify experience to sold-out product pages through a Shopify theme app embed and optional app block. Shoppers can leave their email address for a specific unavailable variant.
- Floating or inline notify-me button with no theme code, in your colors
- Confirmed opt-in and a single alert per request, with one-click unsubscribe
- Form and emails follow your storefront language, including main EU languages
- Hold alerts until enough units are back, and cap the alerts per restock
- Capture waitlists from sold-out products and variants
- Send automatic restock alerts through Gmail or SMTP
- Customize the notify button, popup form, and email design
- Track signups, email clicks, recovered sales, and revenue
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  WZ Back In Stock | |
|---|---|---|
| Detected stores | Not published | 5 |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Arts & Entertainment, Food, Beverages & Tobacco |
| Top store countries | Not published | Japan, United States |
Reviews
| Measure | WZ Back In Stock | |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 1 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | WZ Back In Stock | |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $3/month(ahead) | $9.99/month |
| Longest free trial | 14 days | 30 days |
| Plans listed | 3 | 4 |
Listing
| Measure | WZ Back In Stock | |
|---|---|---|
| Shopify category rank | Not enough data | #122 |
| Shopify App Charts | Not on this week’s charts | #21 in Stock alerts |
| Built for Shopify | No | No |
| Launched | Nov 4, 2026 | Jun 11, 2026 |
| Languages | 1 | 1 |
| Developer | Invesare | WEBOZZA |
FAQ
RoboBack In Stock and WZ Back In Stock: common questions
- Is RoboBack In Stock or WZ Back In Stock cheaper?
- Both list a free plan. Paid plans start at $3/month for RoboBack In Stock and $9.99/month for WZ Back In Stock. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- RoboBack In Stock lists 2 the others don’t mention, such as Customer demand, Inventory reports. WZ Back In Stock lists 10 the others don’t mention, such as Auto-alerts, Inventory tracking, Low stock, Notification button. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 4, 2026 for RoboBack In Stock, Nov 5, 2026 for WZ Back In Stock; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 4, 2026 for RoboBack In Stock, Nov 5, 2026 for WZ Back In Stock. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.