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AltKing: AI Alt Text SEO & ADA vs Booster AI SEO + AEO Optimizer (2026): which should you pick?

As of Oct 23, 2026, AltKing: AI Alt Text SEO & ADA grades higher than Booster AI SEO + AEO Optimizer: 2.8 against 2.2 out of 4.0.

Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA

AltKing: AI Alt Text SEO & ADA grades higher on value for money, the free plan and ease of use. Booster AI SEO + AEO Optimizer grades higher on features and platforms.

Price, platforms and features side by side. The table says where each price was read and when.

AltKing: AI Alt Text SEO & ADA

Free Shopify app that writes alt text for product and variant images

Free

Booster AI SEO + AEO Optimizer

Shopify app that audits and fixes store SEO and compresses images

Free plan · from $39/mo

Which one is for you

Pick AltKing: AI Alt Text SEO & ADA if

  • Fits if your Shopify catalog has hundreds of product images with no alt text
  • Works for stores that already use StarApps' Variant Image Automator

Look elsewhere if

  • Skip it if your store isn't on Shopify, as it installs only from the Shopify App Store
  • Watch out: despite AI in its name, the listing describes alt text built from templates, not written by AI
  • Too light for meta tags, schema, sitemaps or redirects, as it covers product image alt text only
  • Watch out: variant details in alt text need Variant Image Automator, another StarApps app
  • Watch out: the listing links no help center or FAQ, so questions go to StarApps support

Pick Booster AI SEO + AEO Optimizer if

  • Fits if you run a Shopify store and want SEO fixes applied across every product
  • Works for stores with big catalogs that are missing alt text

Look elsewhere if

  • Tight if you stay free, as it mostly detects problems; meta templates and fixes need Pro at $39 a month
  • Pricey if you want image compression or Search Console data, which need Premium at $69 a month
  • Watch out: charges come every 30 days through Shopify unless you pay $349 or $619 for the year
  • Skip it if your store isn't on Shopify, as it runs nowhere else

How we grade them

2.8GPAAltKing: AI Alt Text SEO & ADAGood2.2GPABooster AI SEO + AEO OptimizerFair
Value for money
AListed as free on the Shopify App Store with no paid plans: bulk alt text, variable templates and the daily sync all cost nothing.
DPro is $39 a month, inside this category's dearest tenth (from $33.25), or $349 a year, about $29.08 a month. Image compression, URL keywords and Search Console data need Premium at $69 a month.
Free plan and trial
AThe whole app is free and the listing shows no paid tier, so there's no cap to reach.
CA free plan with an SEO score, alt text templates, broken-link detection, manual audits and a weekly sync of 50 images. It finds problems but leaves most of the fixing to Pro.
Features
DAlt text for product and variant images from variable templates, with a daily sync for new images. That's one narrow function: no meta tags, schema, sitemaps or redirects, and variant details need Variant Image Automator.
BAudits with automatic fixes, meta templates, alt text, broken-link fixes, JSON-LD, sitemap submission, llms.txt, image compression and a year of Search Console data. It covers the whole job, spread over two paid plans.
Ease of use
BNo rating on record, but there's little to set: pick the variables for the template, run it once, and the daily sync handles new images.
CNo rating on record. It installs from the Shopify App Store, but meta tags and alt text run on templates you set, and the automatic fixes start on Pro.
Platforms and integrations
CWeb only, inside the Shopify admin, with StarApps' own Variant Image Automator the one other app listed. No phone or desktop app.
BWeb only, inside Shopify. It connects to Search Console and ChatGPT, and works with the review apps Judge.me, Loox, Okendo and Yotpo.
Best forfilling in Shopify product image alt textautomatic SEO fixes for Shopify stores

The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: AltKing: AI Alt Text SEO & ADA and Booster AI SEO + AEO Optimizer. How we grade

Price against what you get

AltKing: AI Alt Text SEO & ADA has no paid plan and scores 2.0 out of 4 on features, ease of use and platforms. Booster AI SEO + AEO Optimizer starts at $39 a month and scores 2.7.

Booster AI SEO + AEO Optimizer scores higher, and starts $39 a month higher: the question is whether the extra is worth that to you. Of the other SEO plugins and apps on the chart, none scores higher than AltKing: AI Alt Text SEO & ADA for less, and 1 scores higher than Booster AI SEO + AEO Optimizer for less.

Features, ease of use and platforms, averaged

D1.0C2.0B3.0A4.0Free$2$5$10$20$50$100$200$500More for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessAltKing: AI Alt Text…Booster AI SEO + AEO…

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of SEO plugins and apps, and the best at every price

Where they differ

  • AltKing: AI Alt Text SEO & ADA also covers templates.
  • Booster AI SEO + AEO Optimizer also covers reports, site audit, schema markup and page speed.
In commonFree planWebAI features

At a glance

AltKing: AI Alt Text SEO & ADABooster AI SEO + AEO Optimizer
PricingFreeFree plan
Starts atFree$39 per month, billed every 30 days
Free planListed as free on the Shopify App Store, with no paid plans: bulk alt text from variables, variant details in alt text and a daily sync for new images.SEO score, alt text templates, broken-link detection, manual audits, a weekly sync of 50 images and weekly email reports.
Free trialNone listed14-day free trial on Pro and Premium
Web
Made byStarApps Studio LLPBooster SEO
Price read fromapps.shopify.comapps.shopify.com
CheckedOct 23, 2026Oct 23, 2026

Worth knowing

AltKing: AI Alt Text SEO & ADA

  • Works only on Shopify stores; it is installed from the Shopify App Store.
  • Despite AI in its name, the listing describes alt text built from variable templates and does not explain any AI writing.
  • It covers product image alt text only; it does not edit meta tags, schema, sitemaps or redirects.
  • The listing gives no help center or FAQ; support is through StarApps.

Booster AI SEO + AEO Optimizer

  • Works only on Shopify stores; it is installed from the Shopify App Store.
  • Meta tag templates and automatic fixes need Pro at $39 a month; the free plan only detects and reports most issues.
  • Image compression, URL optimization and Search Console data need Premium at $69 a month.
  • Charges are billed in US dollars every 30 days through Shopify, or yearly at $349 or $619.

Key features

AltKing: AI Alt Text SEO & ADA

One-click alt text
Rewrites the alt text of every product and variant image in the store in a single run.
Variable templates
Alt text is assembled from variables such as variant options, image file name, product title, product type, tags and brand name.
Daily sync
Checks the store each day and gives newly added product images alt text in the same format.
Variant details in alt text
With Variant Image Automator, another StarApps app, the alt text of each variant image carries that variant's option details.
Accessibility standards
The listing files it under accessibility for ADA, AODA, EAA and WCAG compliance, alongside its SEO use for Google image search.

Booster AI SEO + AEO Optimizer

Automatic SEO fixes
Scans the store continuously and fixes the issues it finds without manual work; automatic fixes and monitoring start on Pro.
Meta tag templates
Pro optimizes meta titles and descriptions and applies custom templates to every meta tag, with AI-generated text as an option.
Image SEO and compression
Alt text templates on every plan; Premium compresses images (5 GB a month) and renames image files for search.
Broken links and redirects
Detects broken links and reports them on the free plan; Pro finds and fixes them automatically.
Structured data and AI search
Adds JSON-LD rich snippets, submits the sitemap to Google, and writes an llms.txt file so AI assistants can read the store.
Reports
Weekly email summaries on every plan; Premium adds 365 days of Google Search Console metrics, bulk actions and PDF reports.

Plans

AltKing: AI Alt Text SEO & ADA

  • Free$0

    Alt text for all product and variant images from variable templates, with a daily sync for new images.

Booster AI SEO + AEO Optimizer

  • Free$0

    SEO score and badge, alt text with custom templates, broken-link detection, manual audits, weekly sync of 50 images and 24/7 chat support.

  • Pro$39

    per month, billed every 30 days

    Adds meta title and description templates, automatic fixes and monitoring, rich snippets, sitemap submission and AI search features. $349 a year.

  • Premium$69

    per month, billed every 30 days

    Adds image compression (5 GB a month), URL keyword and image file name optimization, 365 days of Search Console data and PDF reports. $619 a year.

Ways to pay less

AltKing: AI Alt Text SEO & ADA

No public discounts listed.

Booster AI SEO + AEO Optimizer

  • Annual discount

    Save 25% with yearly billing

    The listing offers Pro at $349 a year and Premium at $619 a year, which it says saves 25% against paying monthly.

Common questions

Which is cheaper, AltKing: AI Alt Text SEO & ADA or Booster AI SEO + AEO Optimizer?

As of Oct 23, 2026, AltKing: AI Alt Text SEO & ADA is cheaper to start with: it is free, against $39 a month for Booster AI SEO + AEO Optimizer. AltKing: AI Alt Text SEO & ADA is free, and Booster AI SEO + AEO Optimizer starts at $39 per month, billed every 30 days.

Which has a free plan, AltKing: AI Alt Text SEO & ADA or Booster AI SEO + AEO Optimizer?

As of Oct 23, 2026, both AltKing: AI Alt Text SEO & ADA and Booster AI SEO + AEO Optimizer have a free plan.

More comparisons

How this page was made

  • The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
  • The grades are our own, from each tool’s review or report card. The GPA is their average.
  • Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
  • The differences and the answers to the questions are worked out from those listings.
How we review and grade