PO Box Blocker — AddressFence vs NoBox: 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 for PO Box Blocker, Oct 14, 2026 for NoBox.
The short answer
- Only PO Box Blocker lists a free plan. Paid plans start at $9.99/month for PO Box Blocker and $4.99/month for NoBox.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · Shipping PO Box/locker + 10 ZIP rules
Pro
- · Free+: street #, messages, regions, CSV
Plus
- · Beyond Pro: billing rules + allowlists
Unlimited Plan
- · Block PO Boxes instantly
- · Customize Blocking keywords
- · Fully customizable messages
- · One click setup
- · Premium support
- · Seamless checkout integration
Pro plan
- · APO, FPO, and DPO detection
- · Country blocking
- · International keywords in 6 languages
- · Military address blocking
- · One click setup
- · Product and variant exemptions
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.
NoBox prevents failed deliveries by blocking orders with PO Box addresses at checkout. It detects all common PO Box formats in both address fields and lets merchants add their own custom blocking keywords. The app also blocks restricted ZIP codes, postal code ranges, cities, states, countries, and military addresses. For international merchants, it detects PO Box equivalents in six languages.
- 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.
- Detect all variations including "PO Box", "P.O. Box", "POBOX", and "P.O.BOX"
- Customize the error message and add specific blocking rules.
- Immediately inform customers when a PO Box used
- Integrates seamlessly into your checkout flow.
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 |  NoBox |
|---|---|---|
| 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 | NoBox |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| 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 | NoBox |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month | $4.99/month(ahead) |
| Longest free trial | Not listed | 7 days |
| Plans listed | 3 | 2 |
Listing
| Measure | PO Box Blocker | NoBox |
|---|---|---|
| Shopify category rank | #149(ahead) | #162 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 22, 2026 | Jan 12, 2026 |
| Languages | 1 | 1 |
| Developer | momiji-shop | Wezy |
FAQ
PO Box Blocker and NoBox: common questions
- Is PO Box Blocker or NoBox cheaper?
- Only PO Box Blocker lists a free plan. Paid plans start at $9.99/month for PO Box Blocker and $4.99/month for NoBox. 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 for PO Box Blocker, Oct 14, 2026 for NoBox; 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 PO Box Blocker, Oct 14, 2026 for NoBox. 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.