Kai vs Milly: AI Search & Suggestions
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for Kai, Oct 13, 2026 for Milly.
The short answer
- Both list a free plan. Paid plans start at $19/month for Kai and $14.99/month for Milly.
- Milly lists 8 features Kai’s listing doesn’t mention, including Autocomplete, Conversion tracking, Custom styling.
Head to head
Free
- · 300 messages or 30 days, whichever first
- · Up to 100 searchable products
Starter
- · 1,500 chat messages per month
- · No overage charges
- · Up to 1,000 searchable products
Growth
- · 3,500 chat messages per month
- · No overage charges
- · Up to 3,000 searchable products
Pro
- · 5,000 chat messages per month
- · No overage charges
- · Up to 10,000 searchable products
FREE
- · Free for development stores
BASIC
- · For stores on the Basic or Advanced plan
- · Unlimited AI suggestions
- · Unlimited language support
- · Unlimited recommendations
- · Unlimited searching
PLUS
- · For stores on the Plus plan
- · Unlimited AI suggestions
- · Unlimited language support
- · Unlimited recommendations
- · Unlimited searching
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureKai adds a chat bubble to your storefront where shoppers ask for products in their own words, like "wireless headphones under $50" or "a black dumbbell set". Every answer comes from your synced product data: real titles, prices, variants and stock. If you don't carry something, Kai says so instead of making it up, and suggests close items you do stock. There is nothing to train or write.
Shoppers often leave empty-handed when a search finds nothing, even if the product they want is in your catalog under a different word. Milly replaces the plain search box with a results grid plus an AI chat that understands what a shopper actually means and recommends real products from your store.
- Finds products from natural-language questions, typos, and specs
- Filters by price, brand, category, and stock in plain language
- Always reflects your live catalog - no manual re-indexing
- AI chat understands shopper intent and recommends real products from your store
- Search results and AI chat appear together in one popup, side by side
- Customize the assistant name, avatar, tone of voice, and popup colors
- Track search and AI chat click-through rates from an Analytics dashboard
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 |  Kai |  Milly |
|---|---|---|
| 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 | Kai | Milly |
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Kai and Milly: common questions
- Is Kai or Milly cheaper?
- Both list a free plan. Paid plans start at $19/month for Kai and $14.99/month for Milly. 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?
- Kai lists 1 the others don’t mention, such as Multi-filter. Milly lists 8 the others don’t mention, such as Autocomplete, Conversion tracking, Custom styling, Personalized search. 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 14, 2026 for Kai, Oct 13, 2026 for Milly; 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 14, 2026 for Kai, Oct 13, 2026 for Milly. 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.