AI Blog Agent | SEO Auto Blog vs HarperFlow
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 3, 2026 for AI Blog Agent, Oct 14, 2026 for HarperFlow.
The short answer
- On the Shopify App Store: AI Blog Agent 4.9 from 329 reviews and HarperFlow 5.0 from 1 reviews.
- Only AI Blog Agent lists a free plan. Paid plans start at $8.99/month for AI Blog Agent and $39.90/month for HarperFlow.
- HarperFlow lists 9 features AI Blog Agent’s listing doesn’t mention, including Content analysis, JSON-LD, Keyword analysis.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Lifetime FREE
- · 3 blog posts PER WEEK (12 posts monthly)
- · All premium features
- · Automatic Internal links & on-page SEO
- · Automatically adds related images
- · Automatically features your products
- · Fast & friendly support
Starter
- · 7 posts PER WEEK (30 posts monthly)
- · All features of previous plans
Growth
- · 15 posts PER WEEK (60 posts monthly)
- · All features of previous plans
Pro
- · 40 posts PER WEEK (160 posts monthly)
- · All features of previous plans
Flex 5
- · 5 articles a month, about 1 a week
- · Auto-published to your Shopify blog
- · Email veto before anything publishes
- · Every draft graded by a 2nd AI
- · Images, tables, FAQs & rich data
- · Optimized for ChatGPT & Google AI
Flex 10
- · 10 articles a month, about 1 a week
- · Auto-published to your Shopify blog
- · Email veto before anything publishes
- · Every draft graded by a 2nd AI
- · Images, tables, FAQs & rich data
- · Optimized for ChatGPT & Google AI
Flex 20
- · 20 articles a month, about 1/weekday
- · Auto-published to your Shopify blog
- · Email veto before anything publishes
- · Every draft graded by a 2nd AI
- · Images, tables, FAQs & rich data
- · Optimized for ChatGPT & Google AI
Flex 30
- · 30 articles a month, about 1 a day
- · Auto-published to your Shopify blog
- · Email veto before anything publishes
- · Every draft graded by a 2nd AI
- · Images, tables, FAQs & rich data
- · Optimized for ChatGPT & Google AI
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurePut your SEO on autopilot! AI Blog Agent is a FULLY automated AI blog writer designed to create professional-level & SEO optimized blog posts for your store with the power of AI. After a quick setup, AI Blog Agent will automatically create, schedule, and publish blog posts using the SEO keywords you set + featuring your own products to support your SEO and product sales.
HarperFlow turns your store blog into a steady source of buyer-ready content. It studies your store and products, plans topics your customers actually search for, then writes, schedules, and publishes complete articles with images, tables, FAQs, and structured data directly to your blog. Nothing goes live silently. Every article gets a publish slot and an email first, so you can skip anything with one click.
- Fully Automated: Automatically generates & schedules blog posts for your store.
- SEO Optimized: Creates content catered for the keywords and topics you choose.
- Product Discovery: Automatically features and links your products in blog posts
- Compatible with your existing Shopify blog & theme without any extra work.
- Learns your store and products, then plans topics your buyers actually search
- Writes complete articles with images, tables, FAQs, and structured data
- Publishes on a schedule straight to your store blog, no copy-paste needed
- Structures every article for improved AI search visibility
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 |  AI Blog Agent |  HarperFlow |
|---|---|---|
| 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 | AI Blog Agent | HarperFlow |
|---|---|---|
| App Store rating | 4.9 ★ | 5.0 ★(ahead) |
| App Store reviews | 329(ahead) | 1 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | 1% | Not enough data |
Pricing
| Measure | AI Blog Agent | HarperFlow |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $8.99/month(ahead) | $39.90/month |
| Longest free trial | 14 days | 7 days |
| Plans listed | 4 | 4 |
Listing
| Measure | AI Blog Agent | HarperFlow |
|---|---|---|
| Shopify category rank | #2(ahead) | #143 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | Yes | No |
| Launched | Feb 21, 2025 | Sep 17, 2026 |
| Languages | 1 | 1 |
| Developer | Go Plus NZ | Better Brain Lab LLC |
FAQ
AI Blog Agent and HarperFlow: common questions
- Is AI Blog Agent or HarperFlow cheaper?
- Only AI Blog Agent lists a free plan. Paid plans start at $8.99/month for AI Blog Agent and $39.90/month for HarperFlow. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, AI Blog Agent or HarperFlow?
- On the Shopify App Store: AI Blog Agent 4.9 from 329 reviews and HarperFlow 5.0 from 1 reviews.
- What features does each app list that the other doesn’t?
- AI Blog Agent lists 3 the others don’t mention, such as ALT text, Backlinks, Local SEO. HarperFlow lists 9 the others don’t mention, such as Content analysis, JSON-LD, Keyword analysis, Link analysis. 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 3, 2026 for AI Blog Agent, Oct 14, 2026 for HarperFlow; 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 3, 2026 for AI Blog Agent, Oct 14, 2026 for HarperFlow. 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.