DeltaSync — Inventory Sync vs Sync Watchdog
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for DeltaSync, Oct 13, 2026 for Sync Watchdog.
The short answer
- Only Sync Watchdog lists a free plan. Paid plans start at $29/month for DeltaSync and $29/month for Sync Watchdog.
- DeltaSync lists 6 features Sync Watchdog’s listing doesn’t mention, including Automatic, Bulk, Error reports.
Head to head
DeltaSync Standard
Free
- · 1 location, up to 100 tracked SKUs
- · All detectors and alerts included
Watchdog
- · No metering or per-alert charges
- · One-click cancel, no lock-in
- · Unlimited locations and SKUs
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDeltaSync 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.
Your ERP or inventory connector syncs thousands of updates a day — until the day it silently stops. Most merchants find out days later through oversells and stockouts. Sync Watchdog learns your store's normal sync rhythm and alerts you within minutes when it breaks: sync gone quiet, mass zero-outs, or impossible inventory jumps. Read-only, no ERP credentials, no customer data stored.
- 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
- Learns your sync's rhythm and alerts when it goes quiet
- Catches mass zero-outs within 15 minutes, before customers see empty shelves
- Hourly snapshots flag negative stock and impossible inventory jumps
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.
Adoption
| Measure |  DeltaSync |  Sync Watchdog |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | DeltaSync | Sync Watchdog |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | DeltaSync | Sync Watchdog |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $29/month | $29/month |
| Longest free trial | 7 days | 14 days |
| Plans listed | 1 | 2 |
Listing
| Measure | DeltaSync | Sync Watchdog |
|---|---|---|
| Shopify category rank | Not enough data | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 12, 2026 | Jul 24, 2026 |
| Languages | 1 | 1 |
| Developer | DeltaSync Solutions | DrunkApps |
FAQ
DeltaSync and Sync Watchdog: common questions
- Is DeltaSync or Sync Watchdog cheaper?
- Only Sync Watchdog lists a free plan. Paid plans start at $29/month for DeltaSync and $29/month for Sync Watchdog. 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?
- DeltaSync lists 6 the others don’t mention, such as Automatic, Bulk, Error reports, Real-time. Sync Watchdog lists 1 the others don’t mention, such as Email alerts. 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 14, 2026 for DeltaSync, Oct 13, 2026 for Sync Watchdog; 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 14, 2026 for DeltaSync, Oct 13, 2026 for Sync Watchdog. 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.