RMS Size Helper vs True2Size: Chart & Recommender
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
- Both list a free plan. Paid plans start at $9/month for RMS Size Helper and $9.95/month for True2Size.
- True2Size lists 12 features RMS Size Helper’s listing doesn’t mention, including AI recommendations, Analytics, Custom icons.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 with Size Helper
- · 30-day analytics
- · 50 recommendations/month
- · Default button styling
- · RMS branding shown
- · Up to 3 size charts
Growth
- · 10 with Size Helper
- · 500 recommendations/month
- · 90-day analytics
- · Custom button colours
- · No RMS branding
- · Per-product analytics
Professional
- · 1-year analytics
- · 35 with Size Helper
- · Custom button colours
- · No RMS branding
- · Per-product analytics
- · Priority support
Enterprise
- · Custom button colours
- · No RMS branding
- · Per-product analytics
- · Priority support
- · Unlimited Size Helpers
- · Unlimited analytics retention
Free
- · 24h Support
- · Advanced Size Recommender Widget
- · Analytics Dashboard
- · Fully Customizable Design
- · No Watermark
- · Personal Branding Options
Pro
- · Auto-translate Charts into 6 languages
- · Everything in Free, plus:
- · Import Charts from an Image (AI)
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureYou know the email before you open it: "This didn't fit — how do I return it?" Each one costs you time, margin, shipping, and a hesitant customer. RMS Size Helper steps in before checkout: a few quick questions on measurements and fit preference, and shoppers get the right size in any sizing system, anywhere in the world. Fewer wrong-size orders, fewer refunds, more customers who buy once and never worry again.
True2Size helps shoppers find their exact size with a personalized size recommender, backed by clean, fully customizable size charts. Shoppers answer a short questionnaire (or enter their measurements) and get a confidence-scored size recommendation for that product.
- Smart "Find My Size" survey guides customers to their perfect fit.
- Create custom size templates for tops and bottoms with international sizes.
- Choose between "Size Chart + Size Helper" or "Size Chart Only" size guides.
- Assign size templates to individual/multiple products and groups.
- Instant size recommendations on product pages, no developer setup required
- Confidence scores show how well each size fits a shopper's measurements
- Multiple widget themes to match your store's visual style and brand colors
- Available in six languages, auto-detected from the shopper's browser
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 |  RMS Size Helper |  True2Size |
|---|---|---|
| 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 | RMS Size Helper | True2Size |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 4 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | RMS Size Helper | True2Size |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9/month(ahead) | $9.95/month |
| Longest free trial | 7 days | 14 days |
| Plans listed | 4 | 2 |
Listing
| Measure | RMS Size Helper | True2Size |
|---|---|---|
| Shopify category rank | #197 | #27(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 8, 2026 | Jul 6, 2026 |
| Languages | 1 | 1 |
| Developer | RMS | True2Size |
FAQ
RMS Size Helper and True2Size: common questions
- Is RMS Size Helper or True2Size cheaper?
- Both list a free plan. Paid plans start at $9/month for RMS Size Helper and $9.95/month for True2Size. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- True2Size lists 12 the others don’t mention, such as AI recommendations, Analytics, Custom icons, Custom text. 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 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.