Avonix: Tariff Surcharge Fees vs VOL Surcharge Fee & Extra Fees
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026.
The short answer
- VOL Surcharge Fee & Extra Fees is detected on 22× as many Shopify stores as Avonix: 173 vs 8 as of Nov 8, 2026.
- Only VOL Surcharge Fee & Extra Fees lists a free plan.
Head to head
- Hong Kong
- China
- United States
- United States
- Canada
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · Fixed fees & percentage fees
- · Location-based fee rules
- · Online store fees only
- · Optional fee rules
- · Product & cart conditions
- · Support from the founder
Pro
- · Country & Location fee rules
- · Fixed fees & percentage fees
- · Handling surcharge & recycling surcharge
- · Online Store, POS fee & Draft Orders fee
- · Optional & Required fees with validation
- · Product, Cart & Order conditions
Plus
- · Credit card & payment method fee rules
- · Customer Tags & B2B rules
- · Includes all Pro features
- · Payment fees & Shipping destination fees
- · Shipping surcharge & payment surcharges
- · Shopify Markets fee support
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.
Add product fees, checkout fees, surcharges, extra fees, tariffs, bottle fees, bottle deposit fees (Pfand), rush fees and processing fees. Set fixed/percentage cart fees, service fees and automatic fees by product, location, customer, order and Shopify Markets. Add payment fees, credit card fees, import duties, customs fees, order fees, handling fees and B2B fees.
- 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 across checkout, POS, draft orders, and storefront cart flows
- Set rules by product, cart, location, customer, and order conditions
- Create optional or required fees with flexible logic before checkout display
- Support fixed and percentage fees with full control over pricing behavior
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 |  VOL Surcharge Fee & Extra Fees |
|---|---|---|
| Detected stores | 8 | 173(ahead) |
| Net store change, 28 days | 0 | −1 |
| Stores added, 28 days | Not enough data | 2 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Apparel & Accessories, Business & Industrial, Luggage & Bags | Food, Beverages & Tobacco, Apparel & Accessories, Home & Garden |
| Top store countries | Hong Kong, China, United States | United States, Canada, Australia |
Reviews
| Measure | Avonix | VOL Surcharge Fee & Extra Fees |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 100 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 0% |
Pricing
| Measure | Avonix | VOL Surcharge Fee & Extra Fees |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | No monthly plan listed | $15/month |
| Longest free trial | Not listed | 7 days |
| Plans listed | Not published | 3 |
Listing
| Measure | Avonix | VOL Surcharge Fee & Extra Fees |
|---|---|---|
| Shopify category rank | #63 | #2(ahead) |
| Shopify App Charts | Not on this week’s charts | #4 in Pricing - Other |
| Built for Shopify | No | Yes |
| Launched | May 25, 2026 | Mar 23, 2026 |
| Languages | 1 | 1 |
| Developer | Avonix Studio | VOL Apps |
FAQ
Avonix and VOL Surcharge Fee & Extra Fees: common questions
- Which is more popular, Avonix or VOL Surcharge Fee & Extra Fees?
- VOL Surcharge Fee & Extra Fees is detected on 22× as many Shopify stores as Avonix: 173 vs 8 as of Nov 8, 2026.
- Is Avonix or VOL Surcharge Fee & Extra Fees cheaper?
- Only VOL Surcharge Fee & Extra Fees 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.
- 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; 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. 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.