Built for Shopify · installs in 2 minutes

Know exactly when a customer is due to reorder.

SignalDue learns each shopper's real buying cadence and predicts their next reorder window — so your Shopify store wins repeat revenue at the right moment, instead of blasting everyone and hoping.

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No card required1-click installWorks with Klaviyo & Shopify Email
Reorder forecast · Maya R. Live
MR
Maya Rodríguez
4 orders · Coffee subscription · LTV $312
Due in 6 days
Past orders (proven) Predicted window
FebApr JunAug Oct* 87% likely
Avg cadence
63d
Next window
Oct 3–9
Confidence
87%
Show
Due this week
1,284 customers
Why stores add SignalDue

Repeat revenue is hiding in your order history

Most stores treat every past customer the same. SignalDue reads the pattern already in your data and tells you who's about to run out — and when.

Perfect-timing win-backs

Reach each customer in the days before they'd naturally reorder — the window when a reminder actually converts instead of annoying.

Predicted vs proven, always separated

Every forecast ships with a confidence score and window — never a fake certainty. You see the signal and the noise, honestly.

Zero new tools to learn

Syncs the "due to reorder" segment straight into Klaviyo and Shopify Email. Your existing flows just get smarter about timing.

How it works

From install to your first "due" list in one afternoon

Connect your store

One-click install from the Shopify App Store. SignalDue reads your historical orders read-only — no code, no data export, no engineers.

We learn each cadence

Our model measures how often every customer actually rebuys each product, accounting for seasonality, order size and product lifespan.

You act on the signal

Get a daily "due to reorder" list with confidence scores, or auto-sync the segment into your email & SMS flows to trigger at the right moment.

The product

An instrument for repeat revenue — not another dashboard you ignore

Reorder radar

See who's about to run out — ranked by revenue at stake

A live, sortable list of every customer entering their reorder window, with a confidence bar so you know how much to trust each call.

  • Sort by due date, confidence, LTV or product
  • Per-customer window with high/medium confidence tiers
  • Export or push to a flow in one click
Reorder radar · Due next 14 days
JL
James Liu
Whole-bean coffee · 1kg
in 3 days
91%
AK
Aisha Khan
Vitamin D drops
in 5 days
84%
TB
Tom Becker
Dog food · large breed
in 8 days
63%
SP
Sofia Park
Refill pods · x4
in 11 days
79%
Smart segments

Auto-built segments that stay in sync with reality

SignalDue continuously re-scores your base and keeps living segments up to date — no manual CSV wrangling, no stale lists.

  • "Due now", "at risk of churn", "over-due" auto-segments
  • Two-way Klaviyo & Shopify Email sync
  • Suppress recent buyers automatically — never double-nudge
Live segments · this week
Due to reorder now1,284
Approaching window2,910
Over-due · at risk640
Recently reordered · suppressed1,507
Send-time intelligence

Trigger the reminder on the day it converts

Every reorder window becomes a per-customer send date. Fire campaigns and SMS at the moment intent peaks — and watch revenue-per-send climb.

  • Per-customer optimal send date, not one blast
  • Attribution back to predicted-window revenue
  • Feeds any flow via native integrations
Predicted send calendar · October
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Peak reorder days  ·  Reorder windows opening
The impact

Repeat revenue you were already owed — captured on time

Aggregate results across SignalDue stores. Predicted figures are model estimates shown with their basis; proven figures are measured from live orders.

3.4×
revenue-per-send vs. one-size blasts
Proven
+27%
repeat-purchase rate in 90 days
Proven
±4 days
median reorder-window accuracy
Predicted
2 min
from install to first forecast
Proven
Pricing

Simple pricing — coming soon

SignalDue is in early access while we finalize order-based plans. Get a free reorder-timing audit now, and you'll be first to know when pricing goes live.

Coming soon

Plans that scale with your monthly orders

We're putting the finishing touches on pricing. Start with a free audit — no card, no install required.

Get free audit
FAQ

Questions, answered honestly

How much order history do you need to predict a reorder?
A customer needs at least two past orders of a consumable product before SignalDue forecasts a window. Until then we mark them as "insufficient signal" rather than guessing — the whole point is honest prediction, never fabricated certainty.
Do you write to my store or send emails for me?
No. SignalDue reads your orders read-only and pushes segments to your email/SMS tools. You keep full control of what gets sent — we just make sure it goes out at the right moment to the right people.
Which tools does it integrate with?
Native two-way sync with Klaviyo and Shopify Email today, plus CSV export and a REST API on the Scale plan. More ESP and SMS integrations ship regularly.
How is a "predicted" window different from a "proven" reorder?
Proven means it already happened — measured from a real order. Predicted is our model's forecast, always shown with a confidence score and date range. We never blur the two, so you always know what you're acting on.
Is my customer data safe?
Yes. We access only the order fields required for forecasting, never store payment data, and are built on Shopify's approved data-protection requirements. You can revoke access and purge your data at any time.

Stop guessing who's coming back. Know.

Add SignalDue to your Shopify store and see your first "due to reorder" list in minutes — free for 14 days, no card required.

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Built on the Shopify App Store · 4.9 ★ average rating