ReturnKey: Spot Return Abuse vs Sigmatize Returns
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 17, 2026 for ReturnKey, Oct 13, 2026 for Sigmatize Returns.
The short answer
- Both list a free plan. Paid plans start at $20/month for ReturnKey and $29/month for Sigmatize Returns.
- Sigmatize Returns lists 2 features ReturnKey’s listing doesn’t mention, including Analytics, Return tracking.
Head to head
Free
- · Last 30 days of refund data
- · Refund and return trends
- · Top 5 worst-returning products
Standard
- · 90-day history, builds after install
- · CSV export of refund reports
- · Customer return flags
- · Full ranking of worst-returning products
Free
- · Creates Return From Any Order
- · Required reason on every return
- · Warehouse return-address settings
Growth
- · Everything in Free, plus:
- · Return-reason analytics dashboard
- · Returns grouped by product & reason
Enterprise
- · Everything in Growth, plus:
- · Onboarding & setup help
- · Priority email support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureReturnKey shows you who is behind your refunds and which products they come from. It reads your Shopify refunds and returns, ranks your worst-returning products, and flags customers whose refund patterns deserve a second look, like repeat returners and rapid refunds. It only flags. You decide what to do. Your last 60 days of refunds import at install, so the dashboard starts full on day one.
Stop guessing why returns are costing you. Sigmatize shows exactly which product is bleeding margin — in real dollars, not just a return count. See your #1 leak the moment you install, then unlock the full SKU-by-SKU breakdown, ranked worst-first. Built directly on your real Shopify order and return data — no spreadsheets, no guesswork. Managing multiple stores?
- Identify your top 5 worst-returning SKUs and see exactly how much each one costs
- Detect fraud signals: chronic returners, rapid refunds, and red flags
- Track return trends over 30, 60, or 90 days with real-time dollar loss estimates
- Get actionable fix recommendations: sizing guides, policy changes, and exchanges
- Create returns from any order in seconds, direct in your admin
- Require a return reason on every return for clean, structured data
- Analytics dashboard reveals which products come back and why
- See the dollar value lost to returns the moment you install
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 |  ReturnKey |  Sigmatize Returns |
|---|---|---|
| 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 | ReturnKey | Sigmatize Returns |
|---|---|---|
| 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 | ReturnKey | Sigmatize Returns |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $20/month(ahead) | $29/month |
| Longest free trial | 7 days | 14 days |
| Plans listed | 2 | 3 |
Listing
| Measure | ReturnKey | Sigmatize Returns |
|---|---|---|
| Shopify category rank | #228 | Not enough data |
| Shopify App Charts | #9 on Pricing moves in Returns and exchanges | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Feb 24, 2026 | Jun 29, 2026 |
| Languages | 1 | 1 |
| Developer | ReturnKey | Sigmatize Labs Dev |
FAQ
ReturnKey and Sigmatize Returns: common questions
- Is ReturnKey or Sigmatize Returns cheaper?
- Both list a free plan. Paid plans start at $20/month for ReturnKey and $29/month for Sigmatize Returns. 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?
- Sigmatize Returns lists 2 the others don’t mention, such as Analytics, Return tracking. 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 17, 2026 for ReturnKey, Oct 13, 2026 for Sigmatize Returns; 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 17, 2026 for ReturnKey, Oct 13, 2026 for Sigmatize Returns. 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.