Syntonic Multi Sync vs Zarbo Stock by Store
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Syntonic Multi Sync, Nov 12, 2026 for Zarbo Stock by Store.
The short answer
- Both list a free plan. Paid plans start at $9/month for Syntonic Multi Sync and $9/month for Zarbo Stock by Store.
- Syntonic Multi Sync lists 8 features Zarbo Stock by Store’s listing doesn’t mention, including Barcodes, Custom, Manual.
Head to head
250 variants
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
1000 variants
- · 14-day free trial
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
2500 variants
- · 14-day free trial
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
5000 variants
- · 14-day free trial
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
10000 variants
- · 14-day free trial
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
20000 variants
- · 14-day free trial
- · Per-field sync control
- · Sync to unlimited stores
- · Tag and status filters
- · Two-way inventory sync
Free
- · Free to test and setup
- · No real-time stock sync
- · Product variant backfill limited to 10k
Starter
Growth
Scale
Enterprise
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureMulti Sync keeps two or more Shopify stores in step, so nobody re-keys a catalogue twice. Edit a product in your source store and the connected stores follow — title, description, images, options, variants and prices. Sell in either store and the other knows: inventory syncs both ways, with loop protection so changes never bounce back and forth.
Shopify does not expose per-location inventory to your theme, so shoppers cannot see what is on the shelf in each store. Zarbo Stock by Store writes the on-hand quantity at every location into a JSON metafield on each variant, kept current as inventory moves through real-time webhooks. Use the metafield the app creates, or point it at one you already have.
- Products sync automatically — title, images, options, variants and prices
- Two-way inventory with loop protection, so stock never drifts
- Variant-level matching by SKU, handle or barcode
- Per-field control: sync it, set it once, or leave it alone
- Write on-hand stock per location into a JSON metafield on every variant
- Stays current automatically as inventory moves, through real-time webhooks
- Use the metafield the app creates, or write to one you already have
- Trigger a full resync of the whole catalog at any time from the app
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 |  Syntonic Multi Sync | |
|---|---|---|
| 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 | Syntonic Multi Sync | |
|---|---|---|
| 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 | Syntonic Multi Sync | |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9/month | $9/month |
| Longest free trial | 14 days | 15 days |
| Plans listed | 6 | 5 |
Listing
| Measure | Syntonic Multi Sync | |
|---|---|---|
| Shopify category rank | #213 | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Sep 28, 2026 | Aug 24, 2026 |
| Languages | 1 | 1 |
| Developer | Syntonic | Zarbo |
FAQ
Syntonic Multi Sync and Zarbo Stock by Store: common questions
- Is Syntonic Multi Sync or Zarbo Stock by Store cheaper?
- Both list a free plan. Paid plans start at $9/month for Syntonic Multi Sync and $9/month for Zarbo Stock by Store. 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?
- Syntonic Multi Sync lists 8 the others don’t mention, such as Barcodes, Custom, Manual, Multi-store. 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 13, 2026 for Syntonic Multi Sync, Nov 12, 2026 for Zarbo Stock by Store; 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 13, 2026 for Syntonic Multi Sync, Nov 12, 2026 for Zarbo Stock by Store. 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.