DiscountLock ‑ Protect Profit vs Sphior Margin: Discount Cap
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Sep 28, 2026 for DiscountLock, Oct 15, 2026 for Sphior Margin.
The short answer
- Only Sphior Margin lists a free plan.
- Sphior Margin lists 11 features DiscountLock’s listing doesn’t mention, including Analytics, Automations, Bulk discounts.
Head to head
Free
- · Discount cap
- · Measured ROI dashboard
Starter
- · Discount cap
- · Measured ROI dashboard
- · Payment & delivery rules
- · Validation rules
Growth
- · Estimated ROI
- · Everything in Starter
- · Sidekick access
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureShopify's native percentage discounts have no way to set a maximum discount amount. A "20 percent off" promotion on a $2,000 item gives $400 off — even if you intended a $50 cap. DiscountLock adds a maximum dollar cap to percentage discounts. Set your percentage and cap amount, and the discount is automatically clamped at checkout. Caps can apply per item or per order.
Checkout quietly leaks margin: promotions stack past your limit, reps over-discount, and loss-making orders slip through. Sphior Margin stops the bleeding with Shopify Functions — capping discounts so they never exceed your limit, blocking carts that break your rules, and controlling payment and delivery by order conditions.
- Set a dollar limit on any percentage discount to protect your margins.
- Choose whether the cap applies to each line item or the entire order.
- Same familiar discount settings you already know, with the cap built in.
- Discount cap: apply tiered discounts that never exceed the limit you set
- Validation: block orders by quantity, product combinations, or required fields
- Payment and delivery rules: hide, rename, or reorder options by order conditions
- Quantity-based volume discounts for B2B and wholesale buyers
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 |  DiscountLock |  Sphior Margin |
|---|---|---|
| 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 | DiscountLock | Sphior Margin |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | 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 | DiscountLock | Sphior Margin |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | No monthly plan listed | $29/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | Not published | 3 |
Listing
| Measure | DiscountLock | Sphior Margin |
|---|---|---|
| Shopify category rank | #171(ahead) | #1089 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Mar 17, 2026 | Jun 26, 2026 |
| Languages | 1 | 1 |
| Developer | AKS Ecom | SPHIOR |
FAQ
DiscountLock and Sphior Margin: common questions
- Is DiscountLock or Sphior Margin cheaper?
- Only Sphior Margin lists a free plan. 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?
- DiscountLock lists 3 the others don’t mention, such as Bulk editing, Custom code, Discount codes. Sphior Margin lists 11 the others don’t mention, such as Analytics, Automations, Bulk discounts, Cart discounts. 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 Sep 28, 2026 for DiscountLock, Oct 15, 2026 for Sphior Margin; 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 Sep 28, 2026 for DiscountLock, Oct 15, 2026 for Sphior Margin. 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.