Address Verifier: Validation vs FP1 ‑ Postcode Shipping Guard
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 Address Verifier, Oct 14, 2026 for FP1.
The short answer
- Only FP1 lists a free plan.
- Address Verifier lists 3 features FP1’s listing doesn’t mention, including Address validation, Custom messages, Order updates.
Head to head
Free
- · Custom error messages
- · Missing house number and ZIP rules
- · PO box and parcel locker blocking
- · Rule-based blocking on every order
Pro
- · Covers Shop Pay, Apple Pay, Google Pay
- · Everything in Free
- · Full verification against carrier data
- · One-click customer correction
Free
- · 1 postcode rule
- · Exact or prefix blocking
- · Optional cart notice
Unlimited
- · Exact or prefix blocking
- · Optional cart notice
- · Unlimited postcode rules
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureBad addresses cost you twice: the carrier fee and the reship. Address Verifier catches them before they ship. It checks every address against carrier and postal data, down to the apartment. Customers fix their own address in one click; on Shopify Plus, right in checkout. It covers express orders that bypass address checks. You set the rules: block PO boxes, missing house numbers, and bad ZIP codes.
FP1 - Postcode Shipping Guard blocks restricted Postcode, Postal Code, and ZIP Code areas without changing your Shopify shipping zones. Block exact codes, use * to cover wider areas (such as SW1A*), or enter postcode ranges using a dash (such as 1000-1999). When a checkout address matches a saved rule, available shipping methods are removed until the postcode changes.
- Verifies every address is really deliverable, down to the apartment.
- Catches express checkout orders that normally bypass address checks.
- Never blocks a real sale: the customer sees a suggestion and chooses.
- Customers fix their own wrong address in one click, before it ships.
- Block restricted Postcode/Postal/ZIP codes inside your shipping zones.
- Block exact codes, or block a whole area using * (for example, SW1A*).
- Apply rules globally or restrict a rule to a specific country.
- Manage rules in the app—no editing shipping profiles or zones required.
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 |  Address Verifier |  FP1 |
|---|---|---|
| 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 | Address Verifier | FP1 |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | 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 | Address Verifier | FP1 |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | No monthly plan listed | $5.99/month |
| Longest free trial | Not listed | Not listed |
| Plans listed | 2 | 2 |
Listing
| Measure | Address Verifier | FP1 |
|---|---|---|
| Shopify category rank | #358 | #292 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 9, 2026 | Feb 10, 2026 |
| Languages | 1 | 1 |
| Developer | Address Verifier | Fixpoint One |
FAQ
Address Verifier and FP1: common questions
- Is Address Verifier or FP1 cheaper?
- Only FP1 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.
- What features does each app list that the other doesn’t?
- Address Verifier lists 3 the others don’t mention, such as Address validation, Custom messages, Order updates. FP1 lists 1 the others don’t mention, such as Shipping rules. 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 Address Verifier, Oct 14, 2026 for FP1; 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 Address Verifier, Oct 14, 2026 for FP1. 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.