OversellCap vs Shelfback
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 OversellCap, Sep 10, 2026 for Shelfback.
The short answer
Head to head
OversellCap Pro
- · Activity history and email alerts
- · Bulk adjustments and store scan
- · Early-cutoff buffer
- · Hard oversell caps per variant
- · Tamper watchdog
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureOversellCap adds a hard, automatic oversell limit to variants that keep selling when out of stock. Set a per-variant cap: after stock reaches zero, sales continue up to your limit, then the variant is instantly marked Sold Out. Restock it and selling resumes automatically. Extras include an early-cutoff buffer, a tamper watchdog, email alerts, bulk limit adjustments, and activity history.
Sold-out products push shoppers away, and they are easy to miss. Shelfback watches your inventory and keeps out-of-stock products from cluttering your collections, so shoppers see what they can buy. It never drafts, hides, or deletes products, so your product pages and URLs stay intact.
- Hard oversell cap — set exactly how many extra units can sell at zero stock
- Auto-stop at the limit and auto-resume after restock, no manual work
- Early-cutoff buffer covers bursts of simultaneous checkouts
- Watchdog restores your selling policy if another app changes it
- Automatically move out-of-stock products to the bottom of your collections
- Email alerts when a product sells out, plus an optional daily summary
- See which top-sellers are low or out of stock, ranked by restock priority
- Exclude any product, tag, vendor, or product type so it is never moved
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 |  Shelfback | |
|---|---|---|
| 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 | Shelfback | |
|---|---|---|
| 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 | Shelfback | |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $2.99/month | No monthly plan listed |
| Longest free trial | 7 days | Not listed |
| Plans listed | 1 | Not published |
Listing
| Measure | Shelfback | |
|---|---|---|
| Shopify category rank | Not enough data | #47 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Nov 4, 2026 | Sep 9, 2026 |
| Languages | 1 | 1 |
| Developer | Choo Studio | twinecom |
FAQ
OversellCap and Shelfback: 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 Nov 4, 2026 for OversellCap, Sep 10, 2026 for Shelfback; 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 OversellCap, Sep 10, 2026 for Shelfback. 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.