ASSAI Builder vs Stack | AI Page Builder
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for ASSAI Builder, Nov 7, 2026 for Stack.
The short answer
- Both list a free plan.
- Stack lists 26 features ASSAI Builder’s listing doesn’t mention, including Alt text, Auto-optimization, Auto-updates.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free 3 days
starter
- · 10 AI-generated pages
- · All page styles included
- · Unlimited product bundles
- · Up to 10 review products
pro
- · 30 AI-generated pages
- · All page styles included
- · Unlimited product bundles
- · Up to 30 review products
business
- · All page styles included
- · Unlimited AI pages
- · Unlimited product bundles
- · Unlimited review products
Free credits
- · + 1.000 AI credits on install
- · Try our AI for free
- · Ultra Model (GPT-Astra, Fable and more)
Builder Stack
- · + 5.000 AI credits
- · Premium customer support
- · Ultra Model (GPT-Astra, Fable and more)
- · Unlock all modules & generations
- · Use up to 1,000 AI credits during trial
Pro Stack
- · + 25.000 AI credits | 5x the credits
- · Premium customer support
- · Ultra Model (GPT-Astra, Fable and more)
- · Unlock all modules & generations
- · Use up to 1,000 AI credits during trial
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureASSAI Builder helps merchants create complete store pages that match their brand without design or coding skills. You describe a product or a page, choose a style and a language, and the app generates a full layout with sections, bundles and reviews. You can preview the result on mobile and publish it to your store in one click.
Stack is an AI page builder for your Shopify store. Describe what you want in plain language, or drop a screenshot, and Stack generates it for you: full product pages, sections, bundles, upsells, and blogs, with copy and images included. Refine any result just by chatting, the same way you'd work with an AI assistant.
- Generate complete AI product pages in your brand style and language
- Build custom pages for home, about, lookbook and brand story
- Add product bundles to increase average order value
- Show customer review sections to build buyer trust
- Bundles & Discounts: Create high-converting BOGO, Mix & Match & quantity offers
- 1-Click Upsells: Add post-purchase offers that customers can’t skip
- Trust Elements: Add stock counters, star ratings, live visitors, shipping timers
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 |  ASSAI Builder |  Stack |
|---|---|---|
| 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 | ASSAI Builder | Stack |
|---|---|---|
| App Store rating | Not published | 4.9 ★ |
| App Store reviews | Not published | 17 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | ASSAI Builder | Stack |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | No monthly plan listed | $39.99/month |
| Longest free trial | Not listed | 7 days |
| Plans listed | 4 | 3 |
Listing
| Measure | ASSAI Builder | Stack |
|---|---|---|
| Shopify category rank | #393 | #38 |
| Shopify App Charts | Not on this week’s charts | #4 on Pricing moves in Page builder |
| Built for Shopify | No | Yes |
| Launched | Jun 4, 2026 | Aug 1, 2024 |
| Languages | 1 | 1 |
| Developer | IAssabban | STACK |
FAQ
ASSAI Builder and Stack: common questions
- Is ASSAI Builder or Stack cheaper?
- Both list a free plan. 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?
- ASSAI Builder lists 10 the others don’t mention, such as AI generation, Analytics, Blog posts, Collection descriptions. Stack lists 26 the others don’t mention, such as Alt text, Auto-optimization, Auto-updates, Automations. 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 13, 2026 for ASSAI Builder, Nov 7, 2026 for Stack; 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 13, 2026 for ASSAI Builder, Nov 7, 2026 for Stack. 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.