PO Box Blocker Pro vs Zip Blocker PRO
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026 for PO Box Blocker Pro, Oct 14, 2026 for Zip Blocker PRO.
The short answer
- Paid plans start at $2.99/month for PO Box Blocker Pro and $5/month for Zip Blocker PRO.
Head to head
- Canada
- United States
Essential
- · Auto health checks & self-repair
- · Block addresses FedEx, UPS & DHL reject
- · Built-in address tester
- · Custom checkout message
- · One-click automatic setup
- · Real-Time PO Box Blocking
Pro
- · Everything in Essential
- · Exempt products, variants, collections
- · PO boxes, lockers, bags & APO/FPO
- · Priority email support
- · Rules by country, state, city & postal
- · Unlimited orders and validations
Regular
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurePO Box Blocker Pro checks each shipping address at checkout and blocks addresses you can't deliver to before the order is placed. Block PO boxes, parcel lockers, locked bags, private bags and APO/FPO addresses, or restrict delivery by country, state, city or postal code. Allow chosen products, variants or collections to bypass the rules, set a custom checkout message, and test any address before going live.
Zip Block Pro – Block checkout by zip code. Add zip codes to an exclusion list in the app. At checkout, if the customer’s shipping zip is on that list, the order is blocked and they see: “We cannot ship to [zip]. Please use a different address.” How it works: Enter the zip codes you want to block (comma-separated), save, then enable the app under Settings → Checkout → Checkout rules. No code or theme changes.
- Automatically detects and blocks PO Box addresses during checkout.
- Allows merchants to exempt specific products from PO Box blocking.
- Customize the message shown when customers enter a PO Box address.
- Works seamlessly with Shopify Checkout and doesn’t require any theme edits.
- Enter blocked zip codes (comma-separated) and save. No code or theme edits.
- Block checkout when the shipping zip code is on your exclusion list.
- At checkout shipping zip is checked against your list blocked zips can’t complet
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 |  PO Box Blocker Pro |  Zip Blocker PRO |
|---|---|---|
| Detected stores | 3 | 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 | Home & Garden, Business & Industrial | Not published |
| Top store countries | Canada, United States | Not published |
Reviews
| Measure | PO Box Blocker Pro | Zip Blocker PRO |
|---|---|---|
| App Store rating | 1.0 ★ | 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 | PO Box Blocker Pro | Zip Blocker PRO |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $2.99/month(ahead) | $5/month |
| Longest free trial | 14 days | 7 days |
| Plans listed | 2 | 1 |
Listing
| Measure | PO Box Blocker Pro | Zip Blocker PRO |
|---|---|---|
| Shopify category rank | #276(ahead) | #456 |
| Shopify App Charts | #3 in Shipping solutions - Other | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jul 4, 2025 | Apr 9, 2026 |
| Languages | 1 | 1 |
| Developer | Dev Kit | David Duarte |
FAQ
PO Box Blocker Pro and Zip Blocker PRO: common questions
- Is PO Box Blocker Pro or Zip Blocker PRO cheaper?
- Paid plans start at $2.99/month for PO Box Blocker Pro and $5/month for Zip Blocker PRO. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- 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 8, 2026 for PO Box Blocker Pro, Oct 14, 2026 for Zip Blocker PRO; 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 8, 2026 for PO Box Blocker Pro, Oct 14, 2026 for Zip Blocker PRO. 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.