Gatekeeper: Checkout Fraud vs Halt: Card Testing Blocker
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Gatekeeper, Nov 3, 2026 for Halt.
The short answer
- Paid plans start at $19/month for Gatekeeper and $6.99/month for Halt.
- Gatekeeper lists 7 features Halt’s listing doesn’t mention, including Fake accounts, High-risk alerts, Order validation.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Guard
- · 24/7 Support
- · 30-day activity log
- · Blocklist
- · Built-in protection rules
- · Checkout fraud blocking
- · Storefront shield
Gatekeeper Pro
- · 24/7 Support
- · 90-day activity log
- · Custom checkout rules
- · Damage control tools
- · Everything in Guard
- · Full analytics and charts
Business
- · 180-day activity log
- · 24/7 Support
- · Custom block message
- · Everything in Pro
- · Order flagging for review
Halt
- · Emails you when an attack starts
- · No card fees lost on fake orders
- · Real customers check out as usual
- · Shows every stopped checkout and why
- · Stops repeat bot checkouts
- · Stops throwaway bot email addresses
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureGatekeeper protects growing stores from checkout fraud and bot abuse. Suspicious checkouts are stopped before payment. Cart spam, fake accounts, and abusive sessions get caught early on the storefront. Activity logs, analytics, and risk breakdowns show what was blocked, flagged, or monitored, so you are never guessing during an attack.
Halt protects your checkout from card-testing bots that use stolen cards to make repeated payment attempts. It detects repeat checkouts using the same email, address, or phone and stops suspicious attempts before the card is charged. Add a bait product to trap automated bots, block throwaway email addresses, and see every stopped checkout and why it was blocked.
- See every blocked and flagged attempt: activity log, analytics, and map view
- Stop fraudulent checkouts before payment. Protection runs inside checkout itself
- Guard your storefront from cart spam, fake accounts, and abusive sessions
- Block repeat offenders and build custom rules that fit how your store sells
- Stops repeat checkouts from the same email, address, or phone in one day
- Works on every Shopify store, including Basic. Nothing to add to checkout
- Starts in watch mode: see what it would stop before it stops anything
- Bait product: a trap item only bots buy, never affects logged-in customers
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 |  Gatekeeper |  Halt |
|---|---|---|
| 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 | Gatekeeper | Halt |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 5 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Gatekeeper | Halt |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $19/month | $6.99/month(ahead) |
| Longest free trial | 14 days | 14 days |
| Plans listed | 3 | 1 |
Listing
| Measure | Gatekeeper | Halt |
|---|---|---|
| Shopify category rank | #256 | #44(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 9, 2026 | Sep 16, 2026 |
| Languages | 1 | 1 |
| Developer | Gatekeeper | Native Code |
FAQ
Gatekeeper and Halt: common questions
- Is Gatekeeper or Halt cheaper?
- Paid plans start at $19/month for Gatekeeper and $6.99/month for Halt. 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?
- Gatekeeper lists 7 the others don’t mention, such as Fake accounts, High-risk alerts, Order validation, Risk reports. Halt lists 5 the others don’t mention, such as Chargebacks, Custom alerts, Email notifications, Fraud notifications. 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 for Gatekeeper, Nov 3, 2026 for Halt; 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 for Gatekeeper, Nov 3, 2026 for Halt. 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.