StackGuard: Combine Discounts vs StackLens: Discount Monitor
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 30, 2026 for StackGuard, Oct 13, 2026 for StackLens.
The short answer
- Both list a free plan. Paid plans start at $5/month for StackGuard and $9.90/month for StackLens.
- StackGuard lists 12 features StackLens’s listing doesn’t mention, including Automations, BOGO, Bulk discounts.
Head to head
Free
- · "Why this price" decision trace
- · Cart-wide margin cap on every order
- · Product and collection targeting
- · Up to 3 percentage or fixed rules
Pro
- · BOGO, bundles, tiers, buy A get B
- · Code-gated rules and Exclusive mode
- · Everything in Free, unlimited rules
- · Per-item margin cap
Free
- · First 5 prioritized findings
- · Latest scan kept up to 30 days
- · Manual scans and summary counts
- · Shopify Admin discount links
Pro monitoring
- · 1, 3, 7, or 14-day thresholds
- · All findings; up to 12 scans
- · Compatible complete-scan comparison
- · Formula-safe CSV export
- · History retained up to 365 days
- · Weekly scheduled scans
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureStackGuard lets you run overlapping promotions — percentage, fixed, BOGO, buy-A-get-B, mix-and-match bundles, and volume tiers — while a hard guardrail caps the total discount on every cart and item, so a stack can never cut below your margin floor. Every discount is explainable: a clear trace shows exactly which rules applied and why.
Review Shopify discount definitions from a read-only dashboard. StackLens highlights overlapping campaign windows, combination-setting signals, upcoming starts and expirations, reported code-usage limits, and automatic-discount capacity. Each finding shows observed evidence and limitations. It doesn't edit discounts or predict which discount will apply to a cart.
- Hard cap on total and per-item discount so stacks never break your margin
- 7 discount types: percentage, fixed, BOGO, buy-A-get-B, bundles, volume tiers
- Clear trace shows exactly which rules applied to every cart and why
- Exclusive mode stops outside discounts; auto-skip items already on sale
- Review native and app-backed discount definitions without changing them
- See overlapping active or scheduled campaign windows with clear evidence
- Flag asymmetric or mutually enabled combination settings for review
- Review lifecycle dates, reported usage limits, and automatic capacity
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 |  StackGuard |  StackLens |
|---|---|---|
| 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 | StackGuard | StackLens |
|---|---|---|
| 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 | StackGuard | StackLens |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $5/month(ahead) | $9.90/month |
| Longest free trial | 30 days | 7 days |
| Plans listed | 2 | 2 |
Listing
| Measure | StackGuard | StackLens |
|---|---|---|
| Shopify category rank | #1100(ahead) | #1156 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 7, 2026 | Aug 3, 2026 |
| Languages | 1 | 1 |
| Developer | StackGuard | cadosy |
FAQ
StackGuard and StackLens: common questions
- Is StackGuard or StackLens cheaper?
- Both list a free plan. Paid plans start at $5/month for StackGuard and $9.90/month for StackLens. 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?
- StackGuard lists 12 the others don’t mention, such as Automations, BOGO, Bulk discounts, Cart discounts. StackLens lists 4 the others don’t mention, such as Analytics, Import and export, Reporting, 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 30, 2026 for StackGuard, Oct 13, 2026 for StackLens; 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 30, 2026 for StackGuard, Oct 13, 2026 for StackLens. 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.