Back In Stock 日本語版：再入荷通知サポーター vs REZ Back In Stock Notify Mefor Shopify (2026)
Back In Stock 日本語版：再入荷通知サポーター and REZ Back In Stock Notify Me are both Shopify apps designed to recapture lost sales due to out-of-stock products. However, they differ significantly in their approach and target audience. Back In Stock 日本語版 focuses on simple back-in-stock notifications via email, SMS, and LINE, providing localized support for Japanese merchants. It also includes basic inventory alerts and a reservation request feature. REZ Back In Stock Notify Me, on the other hand, offers a broader suite of features, including pre-orders, backorders, and partial payment options. This app is targeted toward merchants who want to actively sell out-of-stock items and manage waitlists effectively.
At a Glance
Back In Stock 日本語版：再入荷通知サポーター
2 reviews
REZ Back In Stock Notify Me
44 reviews
Detailed Overview
Back In Stock 日本語版：再入荷通知サポーター
商品の再入荷をEmailまたはSMS・LINEで自動通知！在庫切れアラートや予約商品リクエスト機能も新たに搭載。機会損失を防ぎます。
Key Features
- 商品の再入荷時に自動でメール、SMS、LINE通知が可能
- 受注生産商品に活用できる予約商品のリクエスト機能も利用可能！
- クリック数や購入数などの数字が、グラフで簡単に確認できるダッシュボード機能
- 売り切れ状態を防ぐため、設定した在庫数を下回った際に通知を受け取れる在庫アラート機能
- 再入荷通知をLINEで！外部アプリとの連携がなく設定が可能
REZ Back In Stock Notify Me
Sell preorder & backorders with full/part payments. Notify me when out of stock, back in stock alert
Key Features
- Add Preorder or Notify me widget to your products
- Set up pre-order manager, presale, back orders, deposit or partial payment order
- Customize preorder button, restock notification to match your brand
- Automatically send back in stock alerts to waitlist when you restock product
- Use analytics to track demand, forecast inventory, and measure revenue
Feature Comparison
| Rating | 3.5/5 | 5/5 |
Rating Back In Stock 日本語版：再入荷通知サポーター3.5/5 REZ Back In Stock Notify Me5/5 | ||
| Reviews | 2 | 44 |
Reviews Back In Stock 日本語版：再入荷通知サポーター2 REZ Back In Stock Notify Me44 | ||
| Focus | Back in Stock Notifications (Japanese) | Preorders & Backorders + Back in Stock Notifications |
Focus Back In Stock 日本語版：再入荷通知サポーターBack in Stock Notifications (Japanese) REZ Back In Stock Notify MePreorders & Backorders + Back in Stock Notifications | ||
| Communication Channels | Email, SMS, LINE | |
Communication Channels Back In Stock 日本語版：再入荷通知サポーターEmail, SMS, LINE REZ Back In Stock Notify MeEmail | ||
| Payment Options | None | Full/Partial Payment, Deposits |
Payment Options Back In Stock 日本語版：再入荷通知サポーターNone REZ Back In Stock Notify MeFull/Partial Payment, Deposits | ||
| Inventory Alerts | Yes | No explicit mention |
Inventory Alerts Back In Stock 日本語版：再入荷通知サポーターYes REZ Back In Stock Notify MeNo explicit mention | ||
| Target Market | Japanese Merchants | General |
Target Market Back In Stock 日本語版：再入荷通知サポーターJapanese Merchants REZ Back In Stock Notify MeGeneral | ||
| Key Feature | LINE Notification | Preorder Manager |
Key Feature Back In Stock 日本語版：再入荷通知サポーターLINE Notification REZ Back In Stock Notify MePreorder Manager | ||
| Analytics | Basic Dashboard | Detailed analytics for preorders & waitlists |
Analytics Back In Stock 日本語版：再入荷通知サポーターBasic Dashboard REZ Back In Stock Notify MeDetailed analytics for preorders & waitlists | ||
| Additional Features | Reservation request feature | Pre-sale support |
Additional Features Back In Stock 日本語版：再入荷通知サポーターReservation request feature REZ Back In Stock Notify MePre-sale support | ||
Our Verdict
For Japanese merchants seeking a simple and localized solution for back-in-stock notifications, including LINE integration, Back In Stock 日本語版：再入荷通知サポーター may be a suitable option, despite its lower rating and fewer reviews. Its focus on the Japanese market and LINE integration are significant advantages. However, for merchants needing a more comprehensive solution that incorporates pre-orders, backorders, and partial payment options, REZ Back In Stock Notify Me is the clear choice. Its higher rating and greater number of reviews suggest a more reliable and feature-rich experience, even though it lacks specific LINE integration.
Common Questions
Which app offers pre-order functionality?
REZ Back In Stock Notify Me offers comprehensive pre-order, backorder, and presale functionalities, while Back In Stock 日本語版：再入荷通知サポーター does not directly offer this feature.
Which app integrates with LINE?
Back In Stock 日本語版：再入荷通知サポーター offers direct integration with LINE for back-in-stock notifications, whereas REZ Back In Stock Notify Me only uses email.
Which app provides more robust analytics?
REZ Back In Stock Notify Me provides more detailed analytics for tracking demand, forecasting inventory, and measuring revenue related to preorders and waitlists, offering better business intelligence.
Which app is better for a store targeting Japanese customers?
Back In Stock 日本語版：再入荷通知サポーター is specifically localized for the Japanese market and offers LINE integration, making it a potentially better fit for stores targeting Japanese customers.
Which app is better if I want to collect payment for backordered items?
REZ Back In Stock Notify Me allows you to collect full or partial payments for pre-ordered or backordered items, while Back In Stock 日本語版：再入荷通知サポーター focuses solely on notifications without payment collection.
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