PO Box Blocker — AddressFence vs Simple PO Box 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.
The short answer
- Only PO Box Blocker lists a free plan. Paid plans start at $9.99/month for PO Box Blocker and $2.99/month for Simple PO Box Blocker.
Head to head
Free
- · Shipping PO Box/locker + 10 ZIP rules
Pro
- · Free+: street #, messages, regions, CSV
Plus
- · Beyond Pro: billing rules + allowlists
Pro
- · PO Box blocking
- · Product name based PO Box blocking
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAddressFence stops PO box and parcel locker addresses from being used as the shipping address at checkout. Install, turn on the PO box and locker rules, and they work right away; a small set of ZIP/postal rules is included free. When you need more, paid upgrades add street-number checks, custom checkout error messages, region rules, CSV import, billing-address rules and allowlists.
This app helps merchants prevent shipping issues by detecting and blocking PO Box addresses at checkout. It also gives merchants control to restrict orders based on product titles, helping them comply with shipping policies or product limitations.
- Publish checkout-native address rules without theme code.
- Block PO Boxes, lockers, ZIP/postal ranges, and unsupported regions.
- Preview, publish, roll back, and restore validation configs.
- Block PO Box shipping addresses during checkout to prevent undeliverable orders
- Automatically detect product titles and block PO Boxes only for those products
- Customize blocking rules. Can include more than one product titles
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 |  Simple PO Box Blocker |
|---|---|---|
| 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 | PO Box Blocker | Simple PO Box Blocker |
|---|---|---|
| App Store rating | Not published | 1.0 ★ |
| App Store reviews | Not published | 1 |
| 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 | Simple PO Box Blocker |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month | $2.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 3 | 1 |
Listing
| Measure | PO Box Blocker | Simple PO Box Blocker |
|---|---|---|
| Shopify category rank | #149(ahead) | #358 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 22, 2026 | Apr 21, 2025 |
| Languages | 1 | 1 |
| Developer | momiji-shop | Simple Tools |
FAQ
PO Box Blocker and Simple PO Box Blocker: common questions
- Is PO Box Blocker or Simple PO Box Blocker cheaper?
- Only PO Box Blocker lists a free plan. Paid plans start at $9.99/month for PO Box Blocker and $2.99/month for Simple PO Box Blocker. 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 Oct 13, 2026; 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. 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.