DutyCalc vs Zonos Sync
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 DutyCalc, Sep 10, 2026 for Zonos Sync.
The short answer
- Only DutyCalc lists a free plan.
- Zonos Sync lists 1 features DutyCalc’s listing doesn’t mention, including Compliance reporting.
Head to head
Free
- · 10 duty lookups per month
Pro
- · 1,000 duty lookups per month
Team
- · 10,000 duty lookups per month
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDutyCalc scans your product catalog for missing HS/HTS codes and country-of-origin metadata, then calculates current US tariff exposure for ready SKUs. Review base duty, Section 301, Section 232, reciprocal tariffs, total estimated duty, AD/CVD risk, and margin impact before you reprice, reorder, or send products for broker verification.
New U.S. entry rules, including Section 232 tariffs, Partner Government Agency reviews and Free Trade Agreements, mean shipments need more product data to clear customs without delays and qualify for lower duty rates. Zonos Sync auto-syncs your catalog and orders, then identifies the products that need more data, and surfaces exactly what information customs requires for each one.
- Instant duty rate lookups across 35,000+ HTS tariff codes
- Full duty breakdown at checkout including base, Section 301, 232, and reciprocal
- Simple setup with HS code metafields and a usage tracking dashboard
- Keeps products ready for new U.S. customs entry data requirements
- Orders and catalog sync automatically, no manual exports
- Identifies affected products and the specific customs data each one requires
- Classifies your products and transmits the required data to customs
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 |  DutyCalc |  Zonos 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 | DutyCalc | Zonos 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 | DutyCalc | Zonos Sync |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $49/month | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | 3 | Not published |
Listing
| Measure | DutyCalc | Zonos Sync |
|---|---|---|
| Shopify category rank | #198 | #16(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 19, 2026 | Aug 19, 2026 |
| Languages | 1 | 1 |
| Developer | US Tariff Rates | Zonos |
FAQ
DutyCalc and Zonos Sync: common questions
- Is DutyCalc or Zonos Sync cheaper?
- Only DutyCalc lists a free plan. 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?
- Zonos Sync lists 1 the others don’t mention, such as Compliance reporting. 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 DutyCalc, Sep 10, 2026 for Zonos Sync; 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 DutyCalc, Sep 10, 2026 for Zonos Sync. 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.