Dori: AI Shopping Assistant vs Sigma ‑ AI Shopping Assistant
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026 for Dori, Sep 3, 2026 for Sigma.
The short answer
- Sigma lists 4 features Dori’s listing doesn’t mention, including Agent analytics, Chat flows, Cross-sell.
Head to head
- United States
- India
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 200 Conversations/Month
- · Brand voice customization
- · No credit card needed
- · Product Pal + Side Pal included
- · Up to 500 products
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDori turns your catalog into an AI shopping assistant across your store. Shoppers ask questions, search naturally, compare options, find similar items, get recommendations, choose variants, and add products to cart from chat. Use Dori on product pages for in-context answers and across the store for discovery, quizzes, routines, gifts, upsells, and order tracking.
Sigma AI is your always-on AI shopping assistant that helps customers find products, track orders, and checkout faster. Unlike basic chatbots, it understands your entire product catalog and delivers personalized recommendations through natural conversation. Customers ask questions like "show me gifts under $50" and get instant product cards with images, prices, and one-click add-to-cart.
- Understands customer needs to recommend the proper products for each shopper
- Provides instant answers to product and store questions, 24/7
- Adapts recommendations to match your brand’s style and voice
- Offers personalized shopping consultations to help with conversion rates
- Smart product discovery - customers find products using natural language
- 24/7 automated support - answers questions about products and policies
- Conversation analytics and revenue attribution 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 |  Dori |  Sigma |
|---|---|---|
| Detected stores | 215 | Not published |
| Net store change, 28 days | +7 | 0 |
| Stores added, 28 days | 7 | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Apparel & Accessories, Health & Beauty, Home & Garden | Not published |
| Top store countries | United States, India, United Kingdom | Not published |
Reviews
| Measure | Dori | Sigma |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 47 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | 0% | Not enough data |
FAQ
Dori and Sigma: common questions
- What features does each app list that the other doesn’t?
- Dori lists 2 the others don’t mention, such as Cart recovery, Order updates. Sigma lists 4 the others don’t mention, such as Agent analytics, Chat flows, Cross-sell, Upsell. 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 Nov 9, 2026 for Dori, Sep 3, 2026 for Sigma; 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 Nov 9, 2026 for Dori, Sep 3, 2026 for Sigma. 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.