RestockBolt: In Stock Alerts vs Slingshot
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- Only RestockBolt lists a free plan. Paid plans start at $9/month for RestockBolt and $19/month for Slingshot.
- Slingshot lists 3 features RestockBolt’s listing doesn’t mention, including Alert settings, Auto-alerts, Performance reports.
Head to head
Free
- · 50 in stock alerts sent per month
- · Customizable out of stock widget
- · Direct to checkout emails
- · Recovered revenue dashboard
- · Unlimited shopper signups
Starter
- · 1,000 in stock alerts sent per month
- · Custom email branding
- · Everything in Free
- · Remove RestockBolt branding
- · See most wanted products and trends
- · Sync emails to Klaviyo Events and Lists
Growth
- · 5,000 in stock alerts sent per month
- · Everything in Starter
- · Priority technical support
Scale
- · 20,000 in stock alerts sent per month
- · Everything in Growth
- · Send email alerts from your own domain
Growth
Scale
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureRestockBolt captures shopper interest on sold-out variants and emails them the moment inventory returns. Notifications link to a pre-filled Shopify checkout, so shoppers can buy in one click instead of being sent back to the product page! Per-variant waitlists make sure shoppers are only notified when the exact size or option they want is restocked.
When a product sells out, interested shoppers leave and most never return. Slingshot captures them before they go and brings them back when you restock. Shoppers sign up in one step, no account needed, through an on-site widget you add in the theme editor. The moment you restock, every waiting shopper gets a branded email linking back to the product.
- One-click checkout from every restock email, no trip back to the product page!
- Waitlists are specific to variants - specific to exactly what shoppers want!
- See exactly which sold-out products to restock first, ranked by demand!
- Shoppers can sign up on category pages or product pages!
- No-code on-site signup widget for out-of-stock products
- Automatic branded email the moment a product is back in stock
- Revenue attribution that ties each alert to the sale it earned
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 |  RestockBolt |  Slingshot |
|---|---|---|
| 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 | RestockBolt | Slingshot |
|---|---|---|
| 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 | RestockBolt | Slingshot |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9/month(ahead) | $19/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | 4 | 2 |
Listing
| Measure | RestockBolt | Slingshot |
|---|---|---|
| Shopify category rank | #260 | #247(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Aug 17, 2026 | Jul 8, 2026 |
| Languages | 1 | 2 |
| Developer | Ryan's Apps | nerd with attitude |
FAQ
RestockBolt and Slingshot: common questions
- Is RestockBolt or Slingshot cheaper?
- Only RestockBolt lists a free plan. Paid plans start at $9/month for RestockBolt and $19/month for Slingshot. 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?
- RestockBolt lists 1 the others don’t mention, such as Waitlists. Slingshot lists 3 the others don’t mention, such as Alert settings, Auto-alerts, Performance reports. 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 Oct 13, 2026; 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 13, 2026. 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.