Shopify developer
Useful Plugins
4 apps in the dataset with 4 reviews in total, the oldest launched May 1, 2026. Competes mainly in Taxes, Inventory - Other and Shipping rates.
Apps
4
0 Built for Shopify
Reviews in total
4
Count-weighted rating
5.00
across all rated apps
Country
CZ
Karvina, CZ
Portfolio
| # | App | Rating | Reviews | Last 180 days | From | Free plan | Trial | Built for Shopify | Launched | Category | Integrations | Tier |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  DutyCode – Automatic HS CodesAutomatically fill HS codes for your entire product catalog | 5.0(3) | 3 | 3 | Free plan | Yes | none | No | 2026 | Taxes | none listed | New |
| 2 |  HoldCart — Cart ReservationReserve cart items with real inventory holds, not fake timers | 5.0(1) | 1 | 1 | $19.99/month | Yes | 14 days | No | 2026 | Inventory - Other | none listed | New |
| 3 |  ShipEstimate ‑ Delivery DatesReduce cart abandonment from unexpected shipping costs | No ratings yet | 0 | n/a | $9.99/month | Yes | none | No | 2026 | Shipping rates, Upsell and cross-sell | none listed | New |
| 4 |  StoreSentinel: Risk MonitorDaily health score and suspension risk alerts for your store. | No ratings yet | 0 | n/a | $29/month | Yes | 14 days | No | 2026 | Security - Other, Analytics | none listed | New |
Contact and resources
As stated on the listings. Email addresses are not republished; only the domain.
- Website:
- dutycode.app
- Support email domain:
- dutycode.app
- Shopify partner page:
- apps.shopify.com/partners/michal-bajcar
- Resources listed:
- Privacy policy, FAQ
Last updated Oct 21, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.