Choosing · checked Oct 29, 2026, re-checked monthly
Shopper Zero or Avada Shop Sim?
Both are worth knowing about. Avada Shop Sim: A free Shopify app that sends up to 20 AI shopper personas through your storefront to browse, search, read product pages and add to cart, then returns a store health report scoring four conversion areas, ranked fixes and step-by-step replays with screenshots. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026] Shopper Zero: A mystery shopper for AI assistants: an AI shopper asks a US Shopify store what buyers ask and tries to buy, on the routes assistants use, and shows the owner where the sale was lost. Below are both prices, what each one does, and where each one wins, so you can decide without a sales call.
Avada Agent, Hanoi, Vietnam · 4 Aug 2026 (App Store listing). [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
Avada Shop Sim
- Free: $0. Everything on the listing: up to 20 AI shoppers per run; store health report scoring four conversion areas with fixes ranked by priority; step-by-step session replays with screenshots; same shopper panel on two themes before publishing; custom shoppers with their own budget, goals and shopping style; every visit carries a bot tag. No paid plan, no trial, no per-run charge shown. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
zer0xception · October 2026
Shopper Zero
- Agent Test: $149, one time. Ten tasks, each run twice; the replay of every lost sale; the fixes in order; the buyer’s questions on every route; the Black Friday pre-flight; a free re-check within 14 days; the report the same day.
- Agent Watch: $99 a month per store. The same ten tasks every Monday, compared with the week before, with an email only when something gets worse. Cancel online at any time in two clicks; it runs to the end of the month paid for.
What each one does
| Avada Shop Sim | Shopper Zero | |
|---|---|---|
| Checks set-up files and data | No | Yes |
| Drives a real browser | Implied by its screenshots; not stated | Yes |
| Adds to cart | Yes | Yes |
| Reaches checkout | No | Yes |
| Pays | No | No |
| Asks about delivery and returns | No | Delivery, returns, contact and discount, asked on seven routes |
| Re-tests every week | No | With Agent Watch, $99 a month |
| Replays with screenshots | Yes | Step-by-step screenshots, with the spot a sale was lost |
| Routes it covers | Storefront pages only (search, product pages, cart); no MCP, UCP or WebMCP mentioned [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026] | Your storefront pages in a real browser, plus llms.txt, agents.md, your UCP profile, WebMCP and your store’s own agent connection, read without buying |
Where Avada Shop Sim wins
- Free with no per-run charge, against $149. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
- Up to 20 different AI shoppers per run, with custom personas (budget, goals, shopping style); Shopper Zero is one AI guest doing ten product-based tasks twice. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
- Theme comparison: the same shopper panel on two themes before you publish; Shopper Zero tests only the live store. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
- Run and re-run as often as you like from inside the Shopify admin with no stated cap and no human-review wait (a reviewer praises being able to 'run, rerun, and rerun again'); Shopper Zero is capped at 20 human-checked tests a day. [src: apps.shopify.com/avada-shop-sim/reviews, 6 Oct 2026 review; checked 29 Oct 2026]
- Five public 5-star reviews (7 Sep to 10 Oct 2026) that praise support replies within an hour; Shopper Zero has no public reviews yet. [src: apps.shopify.com/avada-shop-sim/reviews; checked 29 Oct 2026]
- Not US-only: reviewers are in the US, Australia and Ireland; Shopper Zero is US-only at launch. [src: apps.shopify.com/avada-shop-sim/reviews; checked 29 Oct 2026]
- States that every visit carries a bot tag so analytics stay clean; Shopper Zero does not publish how its visits are tagged. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
Where Shopper Zero does more
- Reaches the checkout page; Avada's shoppers stop at add-to-cart and 'never order'. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
- Tests whether an AI shopping agent can buy as a first-time guest, with tasks written from the store's products; Avada simulates human-persona shoppers for conversion work and has no agent-readiness angle. [src: apps.shopify.com/avada-shop-sim; checked 29 Oct 2026]
- Asks the buyer's questions (delivery, returns, contact, discount) on seven routes including the store's agent connection; Avada checks none of these. [src: apps.shopify.com/avada-shop-sim (no mention); checked 29 Oct 2026]
- Black Friday pre-flight (agent routes open, robots.txt, cart.js fee check); Avada has nothing comparable. [src: apps.shopify.com/avada-shop-sim (no mention); checked 29 Oct 2026]
- Agent Watch runs every Monday with a what-changed comparison and an email only when something gets worse; Avada lists no scheduled runs or alerts. [src: apps.shopify.com/avada-shop-sim (no mention); checked 29 Oct 2026]
- Nothing installed and no data permissions; Avada asks for store owner name, email, phone, address and theme access. [src: apps.shopify.com/avada-shop-sim data-access section; checked 29 Oct 2026]
- Every report approved by a person, 'Copy for your developer', and a stated 90-day screenshot deletion; Avada states no retention period. [src: apps.shopify.com/avada-shop-sim (no retention stated); checked 29 Oct 2026]
Who Avada Shop Sim suits. A Shopify merchant doing conversion work who wants a free way to watch many AI personas browse and to compare two themes from inside the admin.
Who Shopper Zero suits. A US Shopify store that wants to know, with a replay, whether an AI assistant can actually buy from it before Black Friday, and what to fix first.
Reviews: 5.0 from 5 reviews, all 5-star: 7 Sep 2026 (The Fragrance Society, Australia), 16 Sep 2026 (Digital Artwork Gallery, US), 1 Oct 2026 (Hemlock & Honey, US), 6 Oct 2026 (Knotty Habits, US), 10 Oct 2026 (Southline, Ireland, no text). Reviews praise support speed more than findings; the 6 Oct review is the only one describing use of the tool itself. [src: apps.shopify.com/avada-shop-sim/reviews; checked 29 Oct 2026] Shopper Zero launched in October 2026 and has no public reviews yet. Not verified: Whether shoppers run in a real browser: not stated; screenshot replays imply rendered pages. Whether shoppers type into the store's search box: the listing says they 'search'. Whether it depends on Shopify SimGym or Shopify Network Intelligence: the listing subtitle calls it 'A SimGym app' but states no requirement. Names of the four scored conversion areas: not on the listing. No developer landing page, help docs or changelog found outside the App Store on 29 Oct 2026. Caps or rate limits on runs: none stated. Reviews went from 0 (mid-October coverage) to 5 (dated 7 Sep to 10 Oct 2026), so earlier coverage may have been stale rather than the reviews being new.
Our limits, stated plainly
- Shopify stores selling to US customers first. Other platforms are read for the buyer’s questions but not yet sold to.
- The shopper does not use WebMCP or UCP to buy; it walks the store’s pages the way a browsing assistant does, and reads the agent routes without buying through them.
- Results are not a score out of 100. They are tasks completed, lost, or not counted.
- Screenshots are deleted 90 days after each report.
- Launched in October 2026; no public reviews yet.
Sources, checked Oct 29, 2026: https://apps.shopify.com/avada-shop-sim, https://apps.shopify.com/avada-shop-sim/reviews. Prices are from the maker’s own pages or App Store listing and can change; tell us at hello@shopperzero.com if one is out of date and we will fix it within a week.