Best size + fit tools for Shopify apparel brands (2026)
Size-related returns are 30-60% of all apparel returns. A 10% reduction is a six-figure revenue line for any $500K+ MRR brand. Here are the size/fit tools that actually move the needle, by brand size + budget.
TL;DR — pick by job
| If your priority is… | Use | Entry pricing |
|---|---|---|
| sub-$500K MRR apparel brands wanting cheap size charts | Kiwi Sizing | Free starter (5 size charts) |
| $300K-$2M MRR apparel brands wanting AI sizing without enterprise pricing | EasySize | $29/mo Starter |
| $2M+ ARR apparel brands where sizing is a P&L line | VFit (TrueFit) | Custom (typically $500+/mo) |
| apparel brands wanting to convert size-mismatch returns into exchanges | Loop Returns | $155/mo Essential |
| size-relevant photo reviews on PDP | Loox | $9.99/mo Beginner |
1. Kiwi Sizing — best for sub-$500K MRR apparel brands wanting cheap size charts
Pricing: Free starter (5 size charts) entry / $6.99-$19.99/mo.
What it does: Size chart + fit-recommender Shopify app for apparel + footwear — visual size guides that customers actually open.
Why it's our pick for sub-$500K MRR apparel brands wanting cheap size charts: $7-$20/mo for size charts that customers actually open. Reduces size-related returns 10-20% vs the native Shopify size spec table — ROI breaks even in 30 days at any meaningful return volume.
Trade-off: No ML fit recommendations like TrueFit; visual guides only, no per-customer prediction.
2. EasySize — best for $300K-$2M MRR apparel brands wanting AI sizing without enterprise pricing
Pricing: $29/mo Starter entry / $99-$299/mo Pro-Enterprise.
What it does: AI size + fit recommender for apparel + footwear — gathers customer data (height, weight, brand affinity) for per-shopper sizing predictions.
Why it's our pick for $300K-$2M MRR apparel brands wanting AI sizing without enterprise pricing: Mid-tier ML sizing at $29-$299/mo. Per-shopper predictions beat static charts on fit-sensitive categories (jeans, tailored apparel).
Trade-off: Less proven than TrueFit at scale; requires customer data input which adds checkout friction.
3. VFit (TrueFit) — best for $2M+ ARR apparel brands where sizing is a P&L line
Pricing: Custom (typically $500+/mo) entry / Custom enterprise.
What it does: Size + fit recommendation engine for apparel — uses garment data + customer history to predict the right size at checkout.
Why it's our pick for $2M+ ARR apparel brands where sizing is a P&L line: Enterprise-grade fit recommendations; proven 20-40% reduction in size-related returns at brands like Levi's, North Face, Allbirds. Pays for itself at $5M+ ARR; overkill below.
Trade-off: Quoted pricing; requires garment data ingestion which is operational work; ROI requires meaningful order volume.
4. Loop Returns — best for apparel brands wanting to convert size-mismatch returns into exchanges
Pricing: $155/mo Essential entry / $340+/mo Advanced.
What it does: Returns + exchanges platform built to convert returns into exchanges (revenue retention).
Why it's our pick for apparel brands wanting to convert size-mismatch returns into exchanges: Even with the best size tool, some returns happen. Loop's exchange-first flow catches the size-mismatch returns and converts them to a different-size exchange — incremental revenue retention.
Trade-off: Pricier than basic returns apps; ROI requires meaningful return volume.
5. Loox — best for size-relevant photo reviews on PDP
Pricing: $9.99/mo Beginner entry / $34.99-$299.99/mo Scale.
What it does: Photo + video reviews for Shopify — visual-first review platform with the best photo widget design in the category.
Why it's our pick for size-relevant photo reviews on PDP: Customer photos showing fit + sizing notes pre-empt size confusion at the source. Loox's automated photo collection produces more size-relevant reviews than text-only platforms.
Trade-off: Pricing climbs with order volume; less feature breadth than Yotpo/Okendo.
What we'd skip
Any "all-in-one" tool that tries to be the best at every category. The honest take: best-in-class for each job (the picks above) beats a single platform that's competent everywhere. The only exception is at sub-$30K MRR, where consolidation matters more than depth — in which case start with the cheapest entry-tier pick and add the rest as you grow.
How we picked
Three filters: (1) is the tool battle-tested by enough DTC brands to surface real edge cases, (2) does the pricing make sense at the stated tier — entry tier must be useful, not bait, and (3) does it integrate cleanly with Shopify (since 90%+ of the brands we work with run on Shopify). Tools that fail any of the three don't make the list, even if their marketing is loud.
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Disclosure: tool links above may be affiliate-tracked. We may earn a small commission if you sign up after clicking. No effect on what you pay or which one we recommend — picks are based on the actual use cases above.