RT: Size Chart, Size Guide vs ScaleChart: Size Chart & Guide
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 7, 2026.
The short answer
- RT is detected on 3× as many Shopify stores as ScaleChart: 322 vs 107 as of Nov 7, 2026.
- On the Shopify App Store: RT 4.3 from 35 reviews and ScaleChart 5.0 from 55 reviews.
- Only ScaleChart lists a free plan.
- ScaleChart lists 1 features RT’s listing doesn’t mention, including Descriptions.
Head to head
- United States
- India
- United Kingdom
- Netherlands
- United States
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free Plan
- · AI Native Sizes Based On Market
- · Auto Unit Detection by Customer Location
- · Automatic Translation In Any Language
- · Fully Customizable Design
- · Import Charts via Product Description
- · Publish Up to 2 Size Charts
Premium Plan
- · Automatic Size Chart Generation with AI
- · Cart Drawer
- · Everything in Free Plan
- · Post Purchase Upsells
- · Quality Checks & Size Guide Alerts
- · Sticky Add To Cart
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureYou will boost sales of products for which customers must select the size, offering them a tool to make a safe purchase and solve any doubt. You will be able to limit returns and refunds of products not matching users' needs, offering a wider overview of the products you sell.
When customers pick the wrong size, you lose sales and face costly returns. ScaleChart is a size chart builder that creates custom AI charts and fit advice to reduce returns. Auto-generate a chart from a photo or text, then auto-assign or bulk-apply it across products. Show it in a mobile-friendly popup, tabs, or theme-native dropdown.
- Limitless Custom Size Creation
- Size Chart Available as Pop Up
- Works with All Themes
- Transform supplier images into professional, interactive size charts instantly.
- Automatically transforms units and languages to match your local market needs.
- Sticky Add to cart included
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 |  RT |  ScaleChart |
|---|---|---|
| Detected stores | 322(ahead) | 107 |
| Net store change, 28 days | −2 | +2 |
| Stores added, 28 days | 4(ahead) | 3 |
| Big-brand share | 9% | Not enough data |
| Top store categories | Apparel & Accessories, Sporting Goods, Home & Garden | Apparel & Accessories, Home & Garden, Health & Beauty |
| Top store countries | United States, India, United Kingdom | Netherlands, United States, Australia |
Reviews
| Measure | RT | ScaleChart |
|---|---|---|
| App Store rating | 4.3 ★ | 5.0 ★(ahead) |
| App Store reviews | 35 | 55(ahead) |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | 0% |
Pricing
| Measure | RT | ScaleChart |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | No monthly plan listed | $29.99/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | Not published | 2 |
Listing
| Measure | RT | ScaleChart |
|---|---|---|
| Shopify category rank | #44 | #2 |
| Shopify App Charts | #5 in Design elements - Other | #12 in Product comparison |
| Built for Shopify | Yes | Yes |
| Launched | Mar 8, 2023 | Jan 1, 2026 |
| Languages | 1 | 1 |
| Developer | RoarTheme | Scalechart LLC |
FAQ
RT and ScaleChart: common questions
- Which is more popular, RT or ScaleChart?
- RT is detected on 3× as many Shopify stores as ScaleChart: 322 vs 107 as of Nov 7, 2026.
- Is RT or ScaleChart cheaper?
- Only ScaleChart 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.
- Which has better reviews, RT or ScaleChart?
- On the Shopify App Store: RT 4.3 from 35 reviews and ScaleChart 5.0 from 55 reviews.
- What features does each app list that the other doesn’t?
- ScaleChart lists 1 the others don’t mention, such as Descriptions. 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 7, 2026; estimated figures are labeled.
Keep comparing
More matchups
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 7, 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.