UnitWise vs WeighPay – Sell by Weight
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- On the Shopify App Store: UnitWise 5.0 from 2 reviews and WeighPay 5.0 from 1 reviews.
- Paid plans start at $14.99/month for UnitWise and $4.99/month for WeighPay.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Standard
Professional Plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureEffortlessly display unit prices (e.g., "$0.23 / 100 mL") and quantities (e.g., "950 g") on your Shopify store with our app. Editing can't be simpler; just edit the product or variant like you normally would within Shopify. Boost sales by showing potential savings and comply with regulatory requirements in certain jurisdictions. No more manual calculations needed for you or your buyers!
WeighPay is the ultimate solution for merchants who sell meat, seafood, cheese, fabric, or any product calculated by **weight**. The app lets you set a custom rate per **kilogram**, **pound**, or **ounce** for any item. Customers enter the weight they want, and the total is calculated at checkout with zero errors. Simply install the app and open any product in your Shopify admin.
- Display unit prices like "$0.20 / g", "$1.23/ 100mL", or "$5.87 / item"
- Display units like "950 mL", "1.5 kg", or "12 items"
- Easy to use, flexible item placement
- 100% reliable: All data is hosted within Shopify (units, theme elements)
- Sell by any unit of weight
- Minimum and maximum weight limits
- No theme code editing required
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 |  UnitWise |  WeighPay |
|---|---|---|
| Detected stores | Not published | 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 | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | UnitWise | WeighPay |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 2(ahead) | 1 |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
UnitWise and WeighPay: common questions
- Is UnitWise or WeighPay cheaper?
- Paid plans start at $14.99/month for UnitWise and $4.99/month for WeighPay. 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, UnitWise or WeighPay?
- On the Shopify App Store: UnitWise 5.0 from 2 reviews and WeighPay 5.0 from 1 reviews.
- 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 Oct 13, 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 Oct 13, 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.