There are three common ways to fill in missing Shopify product metadata. Here is what each one actually costs you, including the ways Altfield is the wrong choice.
Most catalogue SEO apps fall into one of three models. They differ less in what they write than in what they charge for and what they do without asking you.
| Altfield | Per-field credit apps | Auto-publish apps | |
|---|---|---|---|
| What you pay for | Products, once per run. Five fields on one product is one product. | Each generated field. A five-field pass over 2,000 products is 10,000 credits, and a description often counts double. | Usually a flat monthly fee, sometimes per product. |
| Before anything is written | You see every proposed value beside its product and tick the ones you want. | Varies. Review is usually available, and usually optional. | Nothing. The point of the category is that it writes without you. |
| Undoing it | Every write records the value it replaced. One click puts a whole run back, makes no AI calls, and works on the free plan. | Often a log and a restore, sometimes charged as a second generation. | Frequently nothing to undo to — the previous value was not kept. |
| Your own copy | Only empty fields are filled. Replacing something you wrote is a separate choice you make on each run. | Depends on the app. | This is where the horror stories come from. |
| Working out the bill | One number: products a month. | A credit worksheet, because fields cost different amounts. | One number, but you are paying for writes you did not see. |
| Where Altfield loses | If you want a tool that simply does it all without you looking, Altfield is the wrong app — the approval step is the product. | If you only ever touch alt text on a handful of products, credits are cheaper than any subscription. | If your catalogue turns over daily and nobody has time to approve anything, automatic publishing is the honest answer. |
Altfield is $0 for 25 products a month, then $19, $49 or $149 for 750, 6,000 or 25,000. Every plan has every feature. See the full pricing.
The same approval-gated workflow, metered in credits per field rather than products per run — and the things Lumi does that Altfield does not, including letting you see your gaps before you install.
A whole images-and-speed toolkit with thousands of reviews against a narrow metadata tool with none. Where each one is the wrong answer, including where Altfield loses outright.
If your catalogue is small enough to fix in an afternoon, no — open each product and type the fields in. The case for an app starts when the work is a thousand products wide and keeps coming back every time you add stock.
You can, and the writing will be fine. The work is everything around it: exporting the catalogue, keeping the rows lined up, pasting the answers back, and having no record of what the old values were. Altfield does the same generation inside your Shopify admin, writes through the API so nothing lands in the wrong row, and keeps the previous value of every field so you can put it all back.
Not unless you ask it to. A normal run only fills fields that are empty. Replacing existing values is a separate option you turn on for that run, and even then nothing is written until you tick it.
It stays. Everything Altfield wrote is written into your own Shopify product records, so downgrading, cancelling or uninstalling takes nothing away.
Once per run, no matter how many fields that run writes for it. Running a product again next month counts again.
Product names and descriptions are off unless you switch them on, and autopilot will never write them at all — those are what a shopper reads, so a person looks at them first.
Product text goes to Anthropic's API to generate a proposal; no customer, order or payment data is sent, because the app never asks for access to any. Altfield's own data is held in the European Union, in Amsterdam. Full privacy policy.
Install it, run it on 25 products for nothing, and decide from the output rather than from this page.