Create Mandatory / Opt Fees, Deposit & Surcharge + Many more.
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mrniamster builds 6 Shopify apps, rated 2.6 on average. Pfand ‑ Deposit & Cart Fee leads the portfolio on 22 detected stores.
As of Nov 8, 2026.
Open an app to inspect its available merchant evidence, reviews, pricing, and listing history.

Create Mandatory / Opt Fees, Deposit & Surcharge + Many more.

Collect customer feedback & feature request polls

Create Awesome Career pages
Create combos and automate your inventory management



Analyze recordings & view customers sessions in action.
Track your apps and your closest competitors — installs detected, listing changes, and review movement, updated continuously.
mrniamster
6 apps on the Shopify App Store