Avonix: Tariff Surcharge Fees vs Surchi: Fees and Surcharges
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026 for Avonix, Oct 13, 2026 for Surchi.
The short answer
Head to head
- Hong Kong
- China
- United States
Basic
- · Fixed amount fees
- · Order subtotal fees
- · Percentage (%) fees
- · Unlimited fees/surcharges
Pro
- · Everything in Basic
- · Locations filter
- · Product fees (per quantity)
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAvonix lets you apply tariffs, surcharges, and customer opt-in environmental fees to your Shopify checkout — all from a single app. Start from a template (eco, tariff), target fees by country or state, and let customers add carbon offsets at checkout. Tariffs apply when shipping to matching countries.
Surchi: Fees and Surcharges makes it easy to apply extra fees in Shopify POS. Just tap the tile to enable it, and fees will automatically adjust as the cart updates. Set fees as a fixed amount or percentage, apply them to the entire order or specific products, and even limit them by location.
- Custom COD, tariff, eco, and surcharge fees
- Country and state targeting with full ISO coverage
- Customer opt-in for carbon offset and environmental fees
- Fixed or percentage fees with automatic currency conversion
- Apply fees to the whole order or specific products
- Choose between a fixed amount or a percentage-based fee
- Fees adjust automatically as items are added, removed, or discounted
- Apply fees only at selected store locations
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 |  Avonix |  Surchi |
|---|---|---|
| Detected stores | 8 | 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 | Apparel & Accessories, Business & Industrial, Luggage & Bags | Not published |
| Top store countries | Hong Kong, China, United States | Not published |
Reviews
| Measure | Avonix | Surchi |
|---|---|---|
| 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 |
FAQ
Avonix and Surchi: common questions
- 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 Nov 8, 2026 for Avonix, Oct 13, 2026 for Surchi; 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 Nov 8, 2026 for Avonix, Oct 13, 2026 for Surchi. 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.