Amplius Customer Fields vs SmartCA: Customer Attribute
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
- Amplius Customer Fields is detected on 8× as many Shopify stores as SmartCA: 8 vs 1 as of Nov 8, 2026.
- On the Shopify App Store: Amplius Customer Fields 3.6 from 16 reviews and SmartCA 4.7 from 58 reviews.
- Only SmartCA lists a free plan. Paid plans start at $2.99/month for Amplius Customer Fields and $15/month for SmartCA.
- Amplius Customer Fields lists 2 features SmartCA’s listing doesn’t mention, including Custom fields, Registration forms.
Head to head
Add unlimited number of fields to registration and cart page
- Italy
- Czechia
- France
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Growth
- · Collect customer data on registration
- · Update customer data on account page
- · Works with new customer accounts
Free
- · 13 field types incl. image choices
- · Cart fields saved to orders
- · Fields on register & cart pages
- · Ready-made attribute templates
- · Show cart fields by product
Pro
- · Auto-tag customers from answers
- · Conditional fields based on answers
- · Email alerts on customer updates
- · Everything in Free
- · File upload & coupon code fields
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureTransform how you collect and manage customer information in your store. Collect VAT/Tax ID, birthdays, measurements, preferences or any additional data you need - all saved directly in native metafields. Let customers update their details through their account page and share information seamlessly with other apps. No external databases, no data lock-in.
Custormer & Cart Attribute helps you to create additional fields on the customer account registration page, account page and cart page. With this app, you can get the necessary data directly from your customers in an easy way. Place fields on the registration page to know age, preferences and interests and all other information you may need.
- Add extra fields to the Shopify sign up form
- Works with metafield data type definitions
- Easy to read and edit data directly from the customer page
- In a few simple steps you can independently add additional fields
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 |  Amplius Customer Fields |  SmartCA |
|---|---|---|
| Detected stores | 8(ahead) | 1 |
| Net store change, 28 days | 0 | −19 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Hardware, Apparel & Accessories, Baby & Toddler | Home & Garden |
| Top store countries | Italy, Czechia, France | United Kingdom |
Reviews
| Measure | Amplius Customer Fields | SmartCA |
|---|---|---|
| App Store rating | 3.6 ★ | 4.7 ★(ahead) |
| App Store reviews | 16 | 58(ahead) |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Amplius Customer Fields | SmartCA |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $2.99/month(ahead) | $15/month |
| Longest free trial | 14 days | 3 days |
| Plans listed | 1 | 2 |
Listing
| Measure | Amplius Customer Fields | SmartCA |
|---|---|---|
| Shopify category rank | #111 | Not enough data |
| Shopify App Charts | Not on this week’s charts | #1 on Pricing moves in Cart customization |
| Built for Shopify | No | No |
| Launched | Nov 16, 2022 | Mar 22, 2017 |
| Languages | 1 | 1 |
| Developer | inkOfPixel | Smartify Apps |
FAQ
Amplius Customer Fields and SmartCA: common questions
- Which is more popular, Amplius Customer Fields or SmartCA?
- Amplius Customer Fields is detected on 8× as many Shopify stores as SmartCA: 8 vs 1 as of Nov 8, 2026.
- Is Amplius Customer Fields or SmartCA cheaper?
- Only SmartCA lists a free plan. Paid plans start at $2.99/month for Amplius Customer Fields and $15/month for SmartCA. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Amplius Customer Fields or SmartCA?
- On the Shopify App Store: Amplius Customer Fields 3.6 from 16 reviews and SmartCA 4.7 from 58 reviews.
- What features does each app list that the other doesn’t?
- Amplius Customer Fields lists 2 the others don’t mention, such as Custom fields, Registration forms. 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 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.