Arc: llms.txt vs Product Plusfor Shopify (2026)
Arc: llms.txt and Product Plus are two Shopify apps serving different needs, despite sharing the 'Content - Other' category. Arc: llms.txt focuses on improving SEO and visibility for AI models by automatically generating and managing an `llms.txt` file. Its primary strength is in automating this technical SEO task, targeting merchants who want to leverage AI's increasing role in search and discovery. Product Plus, on the other hand, centers around enhancing product pages with customizable input fields, enabling merchants to gather specific customer requests and offer personalized products. Its strength lies in improving customer experience and facilitating custom orders. The core difference lies in their purpose: Arc: llms.txt is about optimizing for AI search engines, while Product Plus is about enhancing the customer's shopping experience on individual product pages. Arc: llms.txt is aimed at merchants concerned with technical SEO and staying ahead in the AI search landscape. Product Plus targets merchants selling customizable products or those who need to collect specific information from customers before fulfilling orders. The higher number of reviews (18) for Arc: llms.txt, although still relatively low, suggests it has been adopted by more users and potentially has wider applicability or longer market presence, though the single Product Plus review is also 5 stars, indicating customer satisfaction.
At a Glance
Arc: llms.txt
18 reviews
Product Plus
1 reviews
Detailed Overview
Arc: llms.txt
Create llms.txt for your store by AI. And get mentioned in ChatGPT, Claude. llms.txt is AI Sitemap
Key Features
- One-click generation - instantly create a valid llms.txt file
- Automated refresh - to keep up with the changes
- Rank on LLMs like ChatGPT, Perplexity, Claude, Gemini and Grok
Product Plus
Get extra details from customers in product pages. Deliver tailored solutions.
Key Features
- Get inputs from customers
- Add extra fields on products
- Unlimited extra fields for all plans
- Display fields on product pages
- Super easy to use, No coding required
Feature Comparison
| Rating | 5/5 | 5/5 |
Rating Arc: llms.txt5/5 Product Plus5/5 | ||
| Reviews | 18 | 1 |
Reviews Arc: llms.txt18 Product Plus1 | ||
| Core Function | Generates llms.txt for AI visibility | Adds custom input fields to product pages |
Core Function Arc: llms.txtGenerates llms.txt for AI visibility Product PlusAdds custom input fields to product pages | ||
| Target Audience | Merchants focused on AI SEO and visibility | Merchants offering customizable products |
Target Audience Arc: llms.txtMerchants focused on AI SEO and visibility Product PlusMerchants offering customizable products | ||
| Ease of Use | One-click generation | Simple setup, no coding required |
Ease of Use Arc: llms.txtOne-click generation Product PlusSimple setup, no coding required | ||
| Value Proposition | Rank higher on LLMs and AI shopping engines | Enhance customer experience and deliver tailored solutions |
Value Proposition Arc: llms.txtRank higher on LLMs and AI shopping engines Product PlusEnhance customer experience and deliver tailored solutions | ||
| Technical Focus | High (Technical SEO) | Low (Product Page Customization) |
Technical Focus Arc: llms.txtHigh (Technical SEO) Product PlusLow (Product Page Customization) | ||
| Primary Benefit | Increased organic traffic from AI search | Improved customer satisfaction through personalization |
Primary Benefit Arc: llms.txtIncreased organic traffic from AI search Product PlusImproved customer satisfaction through personalization | ||
Our Verdict
The choice between Arc: llms.txt and Product Plus hinges on the specific needs of the merchant. If the priority is to improve search engine optimization for AI models like ChatGPT, Gemini, and Claude, then Arc: llms.txt is the clear choice. Its one-click generation and automated refresh features make it a convenient tool for technical SEO. On the other hand, if the goal is to offer highly customizable products and collect specific requirements from customers, Product Plus is the better option.
For merchants selling products like custom-printed apparel, personalized gifts, or anything requiring specific instructions from the buyer, Product Plus provides essential functionality to improve customer experience. A merchant selling commodity goods, however, would likely derive more value from Arc: llms.txt to drive traffic.
Common Questions
Which app is better for driving overall traffic to my store?
Arc: llms.txt aims to improve organic traffic from AI search engines, potentially increasing overall traffic. Product Plus doesn't directly drive traffic, but it improves the shopping experience for existing visitors, potentially leading to higher conversion rates and repeat purchases.
Can I use both apps together?
Yes, Arc: llms.txt and Product Plus serve different purposes and can be used concurrently. One focuses on SEO optimization, while the other enhances product page customization. There should be no conflicts using them together.
Is Arc: llms.txt difficult to configure?
No, Arc: llms.txt is designed for ease of use with a 'one-click generation' feature, implying minimal configuration required.
Does Product Plus require any coding skills?
No, Product Plus is described as 'super easy to use' and states 'no coding required,' making it accessible to merchants without technical expertise.
How does 'llms.txt' differ from 'robots.txt' and 'sitemap.xml'?
llms.txt is positioned as an evolution of robots.txt and sitemap.xml, specifically designed for Large Language Models (LLMs) to crawl, index, and showcase products. It targets the unique needs of AI-powered search and discovery, whereas the older formats are primarily focused on traditional search engines.
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