Shopify app
EmergingBuilt for ShopifyCheckout Address Validator JP
Japanese address validation for stores shipping to Japan
- Rating on Shopify
- 5.0(22)
- Reviews
- 22
- Developer
- Flatto Inc.
- Launched
- February 9, 2024
- Pricing
- Free plan available. Free trial available.
- Languages
- Japanese, English
The facts
Every value below is read from the listing or computed by the published formula. Nothing is a verdict.
Bayesian rating
4.48
category median 4.28
Reviews in the last 180 days
3
from the 3 reviews on the listing page
1 and 2 star share
0%
0 of 22
Starting price
$17.99/month
band: $10 to $29 · 7-day trial
Pricing plans as listed on Shopify
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
| Plan | Price | Billed yearly | Trial | Usage fee | Included |
|---|---|---|---|---|---|
| Free | Free | not offered | none | none stated | Up to 100 orders per month; Every address check included; English and Japanese error messages; Chat support |
| Standard | $17.99/month | not offered | 7 days | none stated | Up to 1,000 orders per month; Every address check included; English and Japanese error messages; 7-day free trial; Chat support |
| Growth | $39.99/month | not offered | 7 days | none stated | Up to 5,000 orders per month; Every address check included; English and Japanese error messages; 7-day free trial; Chat support |
| Enterprise | $99.99/month | not offered | 7 days | none stated | Unlimited orders; Every address check included; English and Japanese error messages; 7-day free trial; Chat support |
Rating distribution
22 ratings on the listing when last refreshed.
- 5 stars22(100%)
- 4 stars0(0%)
- 3 stars0(0%)
- 2 stars0(0%)
- 1 star0(0%)
Latest reviews
The 3 most recent of 3 on-page reviews, quoted to at most 25 words each. Full reviews are on the Shopify listing.
5 starsOct 17, 2026せんべい・おかき・あられのお菓子手土産は世田谷区三軒茶屋の大黒屋JapanAbout 2 months using the app
"チャットで問い合わせたところ、すぐにご対応いただけました。 迅速かつ丁寧にご対応いただき、ありがとうございました。"
Developer replied. Read on Shopify
5 starsAug 24, 2026ご褒美パズルJapan11 months using the app
"住所の入力不備、顧客への問い合わせ、返答待ち、回答があれば倉庫連携して修正する、といったEC事業者あるあるのめんどくさいことを、顧客自身にその場で修正してもらえるのがとても優秀。 このアプリのおかげでストレスが軽減できます。"
Developer replied. Read on Shopify
5 starsJun 19, 2026伊七郎商店Japan3 months using the app
"不明点に対して、迅速かつ丁寧にご対応いただき感謝しております。こちらの勘違いでお手数をおかけしてしまった際も、快くご対応いただけて大変救われました。 これまでは番地の未記入といった住所不備が多く、都度の確認作業や、商品の差し戻しによる時間的・経済的な負担が大きな課題でした。しかし、このシステム（サービス）は不備を事前にエラーでアナウンスしてくれるため、トラブルを未然に防ぐことができ、業務効率化の面でも非常に助かっています。今後ともよろしくお願いいたします。"
Developer replied. Read on Shopify
Screenshots
5 of 6 listing screenshots, composed as review cards. Captions are the developer's own.
1 of 5: Address mismatch error under the Address field at checkout 
2 of 5: Missing house number error with an example address to add 
3 of 5: Kanji in the Address field blocked with an English error 
4 of 5: Accepted spelling variations like Shinbashi and Shimbashi 
5 of 5: Settings screen with English and Japanese error messages
Works with
Third-party integrations link to their hub when 5 or more apps name them. Shopify's own surfaces are listed separately and never counted as integrations.
Shopify surfaces: Checkout, Shopify Admin
Data access
As disclosed on the listing. Never scored.
View customer data
Sensitive data, device and activity data
- Sensitive data: Physical address
- Device and activity data: Geolocation, IP address, browser and operating system
View staff and contributor data
Store owner
- Store owner: Name, email address, phone number, physical address
View and edit store data
Orders, Shopify Functions
- View orders: All order history for the last 60 days
- Edit Shopify Functions: Cart and checkout validations
- View other data: Locales
Developer
Flatto Inc.
- Apps in the dataset:
- 7
- Address:
- shibuya, dougenzaka, JP-13, 1500043, JP
- Support email domain:
- flatto.dev
- English support:
- not offered per the listing
- Resources:
- Privacy policy, FAQ, demo store
Similar apps
Shopify's own similar-apps list first, then apps in the same category that share the most feature handles.
From the Shopify listingDeveloper claims, shown verbatim and collapsed. 96 words.Show
- Flags a prefecture, city or town that does not match the postal code
- Blocks an address line with no house number and shows an example of what to add
- Blocks kanji and kana in the address so international shipping labels print
- Accepts spelling variations such as Shinbashi/Shimbashi and Shibuya-ku/City
- Error messages in English and Japanese, editable in the app settings
Checks Japanese addresses in Latin letters against Japan Post data. No Plus plan required.
For stores outside Japan shipping to customers in Japan. Shopify fills in the prefecture and city from a postal code but does not check the town or the house number, so typos become label errors. The app checks the address typed in Latin letters against Japan Post data inside the checkout. Errors appear under the field with the expected value and are fixed before ordering. Spelling variations are accepted. Works on every Shopify plan. No customer data is stored on our servers.
Questions and comments
Questions people ask about Checkout Address Validator JP, answered from what this page shows. Entries marked Site editor are written by the EcomAppReviews editor. Reader comments appear after a person has read and approved them, usually within a day. E-mail addresses are never published.
Last updated Oct 23, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.
22 reviews counted on the listing. Rating and count in the structured data are the values Shopify displayed when the listing was last refreshed.