Basic
$39/month
21-day free trial
- Reorder windows and customer reorder status
- Send audiences to Klaviyo or tag customers in Shopify
Loading page content
Reorder PredictionsRetention · Shopify appStore password
happifyView Reorder Predictions demo store 
Reorder statuses and the opportunity in your customers
Reorder Predictions
Coming to the App StoreFrom $39/month · 21-day free trial
Happify Reorder Predictions
Know which customers are ready to reorder, and when
Predict who is ready to buy again, what they will reorder, and the right time to reach out.
Features
Everything below is in the app today. Plan labels show where a feature starts.
Import your order history
The first import reads your orders, customers and products. With Shopify’s approval for older orders it uses your full history, otherwise the last 60 days.
Learn reorder windows
For each product the app learns how long customers take to buy again, once it has at least five repeat gaps to go on, and classifies the product.
See who is due
Every customer and product pair is marked approaching, ready, high intent, overdue or lapsed, with the expected reorder date.
Reach them your way
Tag customers in Shopify or send a ready audience to your own Klaviyo list. Only customers subscribed to email marketing are included.
- Reorder window for each product, learned from your own orders
- Customers ranked approaching, ready, overdue or lapsed
- Products classified as replenishable, repeatable, seasonal or one-off
- Send audiences to Klaviyo or tag customers in Shopify
- Track orders from activated customers and export audiences
Predictions
- Reorder window per product from your own orders
- Customers placed too early, approaching, ready, high intent, overdue or lapsed
- Products classified replenishable, repeatable, seasonal or one-off, with a reason
- Override any classification; your choice is kept
- Repeat revenue opportunity, labelled as an estimate
Activation
- Tag customers in Shopify, such as repeatiq:ready
- Send audiences to your own Klaviyo list with status and due date
- Respects Shopify marketing consent on every activation
- “Set VIP tag” on the Customers list in Shopify admin
- Orders from activated customers tracked on the Overview
Advanced and Pro
- CSV export of any audience (Advanced)
- Explain: the numbers behind a customer’s status in plain words (Pro)
- Settings history with restore (Pro)
Embedded admin appOverview, Customers, Products, History and Settings
SidekickAsk which products are due for reorder or how many customers are ready
Admin action“Set VIP tag” on the Customers list
Theme app block“RepeatIQ replenishment”: a reorder prompt with your heading, message and link
Try it on the demo store
A store we run with fictional products and orders, with Happify Reorder Predictions installed. Open it from the top of this page; the password is happify.
What to try
- See who is due to reorder this week, based on each product’s consumption interval.
- Compare regular, heavy-use and lapsed customers.
- Build a reminder audience and see who is excluded for lack of email or SMS consent.
Pricing
Every plan starts with a 21-day free trial. Prices are in US dollars per month and billed by Shopify on your Shopify invoice.
Advanced
$79/month
21-day free trial
- Everything in Basic, plus:
- CSV export of reorder audiences
Pro
$149/month
21-day free trial
- Everything in Advanced, plus:
- Settings change history with restore
- Explain: a plain-language reason for each customer’s status
Coming to the Shopify App Store with these plans and prices. Change or cancel your plan at any time from the app. Compare every feature by plan in the setup guide.
Built for
A good fit for
- Consumables people run out of: beauty, supplements, coffee, pet food, household goods
- Stores with repeat customers and a year or more of order history
- Teams already emailing with Klaviyo, or tagging customers for Shopify Email and Flow
Not built for
- Sending email or SMS itself; it builds audiences for the tools you already use
- Subscriptions or loyalty points
- Brand-new stores: products need at least five repeat gaps before a window is trusted
You will need
- Shopify’s protected customer data approval for customer names and emails
- Shopify’s approval for read_all_orders to use orders older than 60 days
- Your own Klaviyo account and private API key, only if you want Klaviyo audiences
How does it predict when a customer will reorder?
From your own orders. For each product it measures the gaps between repeat purchases. Once there are at least five, it sets a reorder window and places each customer in it by days since their last purchase. Every number is calculated, not guessed.
Why does the trial last 21 days?
Reorder windows need real order history to say anything useful. A longer trial lets the first import finish and the predictions settle on your own data.
Do I need Klaviyo?
No. Tagging customers in Shopify works on every plan without Klaviyo. If you use Klaviyo, paste a private API key and list ID in Settings and send audiences from the Customers page.
Which customers are included in an audience?
Only customers whose Shopify email marketing consent is subscribed, read live from Shopify when you activate. Customers who never opted in or who unsubscribed are left out of Klaviyo audiences and tags, and the app tells you how many.
Does the app send emails?
No. It never emails or texts your customers. It hands audiences to Klaviyo or tags customers so your existing flows can act on them.
What does Explain send for the explanation?
On Pro, Explain sends only product and timing facts already on screen to our AI model provider, Anthropic (Claude API): product title, status, days since last purchase, the reorder window and how many past purchases it is based on. No customer name, email or other identifier is sent.
Can I ask Sidekick about reorders?
Yes, on any plan. Ask Sidekick in Shopify admin which products are due for reorder or how many customers are ready. Answers are read-only and product-level, with no customer names or contact details.
Why do I only see the last 60 days?
Shopify shares orders older than 60 days only after it approves the read_all_orders permission for the app. Until then a banner explains that only recent orders are included.
Reviews
Merchant reviews are coming
Reviews appear here once merchants review the rebuilt app on the Shopify App Store. There are none to show yet.
HappifyApps support
Setup, releases and help
CURRENT RELEASE
Version 0.1.0
Released September 24, 2026. Shopify API 2026-10.
Read the changelogSETUP GUIDE
Set up Reorder Predictions
Install, permissions, first run, every screen and plan, and what happens when you uninstall.
HUMAN SUPPORT
Talk to the app team
Send your store URL and a screenshot. We reply within 2 business days.
Submit a support requestOr email admin@happifyapps.com.
More apps by HappifyApps
Each app is installed and billed on its own, and they share one data platform.
Happify Pick List & Low StockPick lists for unfulfilled orders with low stock alertsFrom $9.99/month
Happify Local Delivery SheetLocal delivery sheets, driver runs and packing listsFrom $9.99/month
Happify Delivery Rates by ZipLocal delivery rates by zip code, zone and cut-off timeFrom $9.99/month
Happify Invoice & Packing SlipBranded invoices, packing slips and pick lists in one clickFrom $9.99/month
Happify PWA: Home Screen AppLet shoppers install your store on their home screenFrom $9.99/month
Happify Dead Stock RescueFind slow-moving and dead stock and free up trapped cashFrom $29/month