Start21 Size Charts Shopify App: Pricing, Features & First-Adopter Watch
Key signals for Start21 Size Charts
Start21 Size Charts launched on November 6, 2026. Shoplist is watching for its first storefront installs and tracking pricing in the meantime. Checked .
Sonar hasn’t detected Start21 Size Charts on a store yet. Watching since its Nov 6, 2026 launch.
Start21 Size Charts on the Shopify App Store
Shoplist reads Start21 Size Charts’s App Store listing every day: where it ranks, what merchants say, what it charges and every edit it ships.
Where Shopify ranks Start21 Size Charts
Shoplist reads Shopify’s full category listings every day, so a climb or a slip shows up the day it happens.
Start21 Size Charts in Product display - Other, by day
#503 in Product display - Other on Nov 7, 2026.
Its best position on the Shopify App Store Product display - Other listing each day since Nov 7, 2026. Shaded days: the listing was not read in full, or Start21 Size Charts was not on the pages read.
What Start21 Size Charts charges
Free plan available. Every plan on its listing, and every price change Shoplist has caught, so you can see exactly how it packages and prices.
Free
Free
Pro
$5.99/month
How Start21 Size Charts sells itself on the App Store
The pitch, integrations and features merchants see before they install: the positioning a competitor is betting on.
“Size guides on every product page, in cm and inches, matched by collection, type or tag.”
What it does
Show shoppers a clear size guide right next to the size picker. Build a chart from a template, edit the grid or paste it from Excel or Google Sheets, then choose where it shows: collections, product types, tags or single products. New products get the right… Show shoppers a clear size guide right next to the size picker. Build a chart from a template, edit the grid or paste it from Excel or Google Sheets, then choose where it shows: collections, product types, tags or single products. New products get the right chart automatically. Shoppers switch between centimetres and inches in one tap. Charts are saved in your own store as Shopify content, so you can export them and keep them even if you uninstall. Works with any Online Store 2.0 theme.
Screenshots
Start21 Size Charts listing facts
- Developer
- Oak Glen
- Launched
- November 6, 2026
- Shopify rank
- #503 in Product display - Other
- Languages
- English
Shopify stores using Start21 Size Charts
Shoplist is watching Shopify storefronts for the first public install of Start21 Size Charts.
How Start21 Size Charts’s install base is moving
Shoplist re-crawls the same storefronts, so every store that adds Start21 Size Charts, comes back to it or removes it shows up here. Stores found running it for the first time don’t count as installs.
Net stores, last 28 days
Not enough data: no observed days in the last 28
Reach
0%
of the stores Shoplist tracks
Big-brand share
Not enough data: fewer than 150 of its stores have a known size
Stores adding and removing Start21 Size Charts, by week
Not enough data: fewer than two complete weeks of observed stores.
Seen on the storefront, not guessed
If Shoplist shows Start21 Size Charts on a store, it’s there. Every count on this page traces to code found on a live storefront, re-checked on every crawl.
Code-level
Found in the storefront’s own code
Shoplist matches the scripts, app blocks and pixels Start21 Size Charts loads on each live storefront. No surveys, no developer-reported numbers, no model guessing installs from review counts.
Re-checked, so the count stays current
Shoplist keeps crawling the same storefronts. A store that uninstalls Start21 Size Charts leaves the count on the next crawl, so you read today’s install base, not a high-water mark.
Daily
The App Store, read every day
Rank, reviews, pricing and every listing edit are captured daily, so a price change or a ranking slip shows up here the day it ships.
Two public sources, labelled on every section. Store data last checked .
Read the full methodologyQuestions about Start21 Size Charts
Straight answers from the same data as the rest of this page. The full store list answers the rest.
Has Shoplist detected stores using Start21 Size Charts yet?
Shoplist has not yet found reliable public storefront evidence for Start21 Size Charts. The page tracks first merchant evidence as it appears.
What does first-adopter watch mean?
It means Shoplist is monitoring launch context, first storefront-detectable merchant evidence, and pricing.
Can I get alerts when stores start using Start21 Size Charts?
Yes. Create a watchlist to get alerted when Shoplist finds public merchant evidence for Start21 Size Charts.
Go beyond Start21 Size Charts
Its closest rival, its developer and the charts it competes on, from the same data.
Keep watching Start21 Size Charts.
Get alerted on first storefront installs, review spikes, pricing changes, and listing edits.