This one is less a rivalry than a category boundary. Kiwi Size Chart & Recommender is the incumbent of Shopify sizing — live since 2018, 4.8 stars across roughly 1,100 reviews, priced from free. Garu is a fit engine: it doesn't display sizing information, it answers the sizing question, per garment, and shows the answer on the shopper's body. Kiwi's numbers below come from their public Shopify App Store listing on August 15, 2026.
We make Garu, so read accordingly. For a meaningful share of stores, Kiwi is the correct purchase and this page says exactly when.
The short answer
Choose Kiwi if your size information is messy or missing. Clean, templated charts with unit conversion and multi-language support, from free to $26.99/month, backed by the deepest review base in the category. If you don't have tidy charts today, this is the first $7.99 you should spend on sizing — before considering Garu or anything like it.
Choose Garu when charts have stopped moving the number. Roughly 42% of fashion returns are size-related and charts have had two decades to fix that — they transfer the work to the shopper instead of doing it. Garu answers with one size for the specific garment, your chart, a confidence score, and a photoreal render at that size, front and back.
Side by side
| Garu | Kiwi | |
|---|---|---|
| Category | Fit engine + virtual try-on | Size charts + size recommender |
| Price | $199–$399/mo (25 free try-ons/mo) | Free–$26.99/mo |
| The shopper gets | One size, confidence score, render of themselves wearing it | A well-organised chart; a size suggestion on upper tiers |
| Recommendation basis | Garment-specific, mapped to your chart | Generic model over your chart data |
| Setup inputs | Reads your existing variants and charts | CSV/image import, 22 templates |
| Localisation | Size labels as you sell them | Auto unit conversion, up to 22 languages |
| App Store rating | 5.0 ★ (1 review), live since May 2026 | 4.8 ★ (~1,100 reviews), live since 2018 |
Where Kiwi is genuinely strong
- Price-to-value at the chart tier. Nothing else delivers this much sizing hygiene for $7.99. The templates, unit conversion and language support are mature and battle-tested across thousands of stores.
- Social proof. ~1,100 reviews at 4.8 stars over seven years. Garu has one review today; Kiwi has a longer track record than the entire AI try-on category.
- Zero-risk adoption. A free tier that's actually useful (3 charts), and nothing about it touches your rendering pipeline or your photography.
Where the ceiling is — and what sits above it
Every chart-generation tool shares one ceiling: the shopper still converts a table into a decision. They need to know their measurements, trust flat-vs-worn conversion, and override what reviews say. Most close the tab and order two sizes. A recommender softens this; a garment-specific fit engine removes it — one answer, evidence attached, in the flow of the product page.
The honest budget logic: if size-related returns cost you less than ~$200 a month, Kiwi-tier tooling is the rational buy and Garu is overkill. If they cost you multiples of that — pull six months of return reasons and check — then the chart was never going to fix it, and the ROI calculator will tell you what the gap is worth on your numbers. Some stores sensibly run both: Kiwi for chart hygiene store-wide, Garu on the high-return categories where fit evidence pays.