AddressPill Address Validation vs PO Box Blocker Pro
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 2, 2026 for AddressPill Address Validation, Nov 8, 2026 for PO Box Blocker Pro.
The short answer
- On the Shopify App Store: AddressPill Address Validation 5.0 from 6 reviews and PO Box Blocker Pro 1.0 from 1 reviews.
- Only AddressPill Address Validation lists a free plan.
Head to head
- Canada
- United States
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Starter
- · Detect missing house numbers
- · Free forever
- · In-checkout validation
- · Non-blocking checkout validation
- · ZIP & country format checks
Business
- · Address deliverability checks
- · Automatic Shopify order updates
- · Customer self-correction
- · Everything in Starter
- · Post-checkout address validation
- · Real address verification
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
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAddress validation for shops shipping to Germany, Austria, Switzerland, the US, UK, Australia, Canada and beyond. The address validator warns or blocks missing house numbers, PO boxes, Packstations, special characters and email typos in checkout. After purchase, Google Address Validation provides shipping address verification and address correction.
PO 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.
- In-checkout address validation
- Post-checkout address fixing
- Customer self-correction flow
- Reduce failed deliveries and returns
- 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.
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 |  AddressPill Address Validation |  PO Box Blocker Pro |
|---|---|---|
| Detected stores | Not published | 3 |
| 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 | Home & Garden, Business & Industrial |
| Top store countries | Not published | Canada, United States |
Reviews
| Measure | AddressPill Address Validation | PO Box Blocker Pro |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 1.0 ★ |
| App Store reviews | 6(ahead) | 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 | AddressPill Address Validation | PO Box Blocker Pro |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $2.99/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | 2 | 2 |
Listing
| Measure | AddressPill Address Validation | PO Box Blocker Pro |
|---|---|---|
| Shopify category rank | #38(ahead) | #276 |
| Shopify App Charts | Not on this week’s charts | #3 in Shipping solutions - Other |
| Built for Shopify | No | No |
| Launched | May 19, 2026 | Jul 4, 2025 |
| Languages | 1 | 1 |
| Developer | trinker media gmbh | Dev Kit |
FAQ
AddressPill Address Validation and PO Box Blocker Pro: common questions
- Is AddressPill Address Validation or PO Box Blocker Pro cheaper?
- Only AddressPill Address Validation 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.
- Which has better reviews, AddressPill Address Validation or PO Box Blocker Pro?
- On the Shopify App Store: AddressPill Address Validation 5.0 from 6 reviews and PO Box Blocker Pro 1.0 from 1 reviews.
- 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 2, 2026 for AddressPill Address Validation, Nov 8, 2026 for PO Box 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 2, 2026 for AddressPill Address Validation, Nov 8, 2026 for PO Box 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.