Rebound: Back in Stock WA vs ZapKiwi Revenue Machine
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for Rebound, Aug 7, 2026 for ZapKiwi Revenue Machine.
The short answer
Head to head
Free
- · 100 Notifications per month
- · Email & Whatsapp Notifications
- · Embedded widget
- · Use your own phone number
Plus
- · Analytics
- · Embedded widget
- · Remove Powered by Oh My Labs!
- · Unlimited Email & Whatsapp Notifications
- · Use your own phone number
Premium
- · Analytics
- · Custom CSS to widget
- · Embedded widget
- · Remove Powered by Oh My Labs!
- · Unlimited Email & Whatsapp Notifications
- · Use your own phone number
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureRebound helps merchants turn out-of-stock products into WhatsApp waitlists. Shoppers can request a restock alert from the product page, and when inventory is updated in Shopify, the app sends an automatic WhatsApp notification with a link back to buy.
ZapKiwi helps Shopify merchants extract value by identifying customers who are most likely ready to purchase again. Using your store's order history, customer purchase patterns, and product buying cycles, ZapKiwi automatically identifies reorder opportunities and estimates the revenue you could recover through targeted reactivation campaigns.
- Let shoppers join WhatsApp waitlists from sold-out product pages with consent
- Notify shoppers on WhatsApp when items restock, with direct links back to buy
- Track paid orders and recovered revenue generated by each restock alert sent
- Customize the opt-in button, modal, consent text, success message, and counter
- Find revenue recovery opportunities Identify customers who may be ready to buy
- Prioritize customers for reactivation Review customers by reorder likelihood
- Estimate revenue recovery potential Analyze historical purchases
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 |  Rebound |  ZapKiwi Revenue Machine |
|---|---|---|
| Detected stores | Not published | Not published |
| 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 | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Rebound | ZapKiwi Revenue Machine |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Rebound | ZapKiwi Revenue Machine |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $10/month | No monthly plan listed |
| Longest free trial | 30 days | Not listed |
| Plans listed | 3 | Not published |
Listing
| Measure | Rebound | ZapKiwi Revenue Machine |
|---|---|---|
| Shopify category rank | #30 | #355 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 23, 2026 | Aug 7, 2026 |
| Languages | 2 | 1 |
| Developer | Oh My Labs! | ZapKiwi |
FAQ
Rebound and ZapKiwi Revenue Machine: common questions
- 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 Oct 14, 2026 for Rebound, Aug 7, 2026 for ZapKiwi Revenue Machine; 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 Oct 14, 2026 for Rebound, Aug 7, 2026 for ZapKiwi Revenue Machine. 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.