BundleSync vs DeltaSync — Inventory Sync

Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 23, 2026 for BundleSync, Oct 14, 2026 for DeltaSync.

The short answer

  • Only BundleSync lists a free plan. Paid plans start at $9.99/month for BundleSync and $29/month for DeltaSync.
  • BundleSync lists 7 features DeltaSync’s listing doesn’t mention, including Alert settings, Auto-alerts, Custom notifications.

Head to head

Open this comparison in ShoplistFree account. Every feature, store and change, side by side.
Pitch
—
—
Categories
  • Stock alerts
  • Inventory sync
  • Inventory sync
Languages
  • English
  • Japanese
  • English
Launched
Mar 5, 2026
Jun 12, 2026
Built for Shopify
Not badged
Not badged
Reviews per month
—
—
Detected stores
0active installs
0active installs
Most common store size
—
—
Top countries
—
—
Free options
Free planFree trial
Free planFree trial
Monthly range
From $0 to $9.99/month
$29/month
Plans
FreeFree
Pro$9.99/month
DeltaSync Standard$29/month
7-day free trial
Coverage
11 of 15 features73%
8 of 15 features53%
Unique strengths
  • Alert settings
  • Auto-alerts
  • Custom notifications
  • Low stock alerts
  • +3 more
  • Error reports
  • Inventory alerts
  • Real-time status
  • SKUs
Inventory sync
69%9/13
62%8/13
Notifications and reports
50%3/6
67%4/6
Sync type
86%6/7
57%4/7
Stock alerts
100%2/2
0%0/2
Customization
100%1/1
0%0/1
Notifications
100%1/1
0%0/1
744onlybothonly
BundleSyncDeltaSync15 features listed across both App Store listings

Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.

See every feature
Works with also listed by another
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How it sells itself

BundleSync automatically keeps your bundle product inventory in sync with component stock levels. It calculates available quantity for each bundle based on the minimum stock of its components, ensuring you never oversell. Inventory changes are monitored in real-time through webhooks. Manual syncs and scheduled hourly syncs are also available for accuracy.

DeltaSync keeps stock levels aligned across your Shopify stores. When inventory changes in your source store, DeltaSync updates the matching product in every connected store within seconds, matching items by SKU. Set an optional buffer to hold back safety stock on each target store.

Key points
  • Real-time bundle inventory sync based on component stock levels
  • Low stock alerts when component inventory falls below your set threshold
  • Manual and scheduled sync options for flexible inventory management
  • Real-time inventory sync between your connected Shopify stores
  • SKU-based product matching across stores — no spreadsheets or CSV imports
  • Optional safety-stock buffer held back on the target store
  • Failed updates are retried automatically until they apply
Screenshots
BundleSync dashboard showing bundle inventory management with au
BundleSync alerts, sync history, and Slack settings panelBundleSync dashboard with bundle list, stats, and sync controlsBundleSync create bundle modal with product and component fields
Overview dashboard showing tracked items and sync status
Failure portal listing sync errors with one-click retrySettings screen with the optional safety-stock bufferSync Links screen for connecting a source and target store

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.

Showing only the rows where the apps differ.

Adoption

MeasureBundleSyncDeltaSync
Detected storesNot publishedNot published
Net store change, 28 days0estimated0estimated
Stores added, 28 daysNot enough dataNot enough data
Big-brand shareNot enough dataNot enough data
Top store categoriesNot publishedNot published
Top store countriesNot publishedNot published

Reviews

MeasureBundleSyncDeltaSync
App Store ratingNot publishedNot published
App Store reviewsNot publishedNot published
New reviews, 28 daysNot enough dataNot enough data
Reviewers a year or more inNot enough dataNot enough data

Pricing

MeasureBundleSyncDeltaSync
Free planYesNot listed
Lowest paid monthly plan$9.99/month(ahead)$29/month
Longest free trialNot listed7 days
Plans listed21

Listing

MeasureBundleSyncDeltaSync
Shopify category rankNot enough dataNot enough data
Shopify App ChartsNot on this week’s chartsNot on this week’s charts
Built for ShopifyNoNo
LaunchedMar 5, 2026Jun 12, 2026
Languages2English, Japanese1English
DeveloperIncreoScaleDeltaSync Solutions

FAQ

BundleSync and DeltaSync: common questions

Is BundleSync or DeltaSync cheaper?
Only BundleSync lists a free plan. Paid plans start at $9.99/month for BundleSync and $29/month for DeltaSync. 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?
BundleSync lists 7 the others don’t mention, such as Alert settings, Auto-alerts, Custom notifications, Low stock alerts. DeltaSync lists 4 the others don’t mention, such as Error reports, Inventory alerts, Real-time status, SKUs. 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 23, 2026 for BundleSync, Oct 14, 2026 for DeltaSync; 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 23, 2026 for BundleSync, Oct 14, 2026 for DeltaSync. 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.