Add-ons let you buy a single capability without jumping to a whole new plan. They sit under the plan cards on the Plans page, and they are billed as part of the same monthly subscription line rather than as separate charges. Turning one on or off takes effect on your subscription immediately.
There are five. Two raise a plan limit, three unlock AI features.
Available on Growth + Markets only. Up to 20 extra accounts.
Growth + Markets includes 2 Amazon accounts. This add-on buys additional account slots on top of that, one slot at a time, up to 20.
An "account" here means one (region, seller ID) pair. If you sell in Europe and North America under two separate Seller Central registrations, that is two accounts, not one. See Amazon accounts and regions for how the app counts them.
When it is worth it. You are on Growth + Markets, you have hit the account cap, and everything else about the plan still fits you. Buying two or three account slots is usually cheaper than moving to Full. If you need many accounts, or you also want unlimited mapped products and unlimited market mappings, compare the total against Full, which allows effectively unlimited accounts on its own.
When it will not help. The add-on is not offered on Free, Growth or Full. On Growth you cannot buy a second account slot; you have to move to Growth + Markets. On Full you do not need to, because the cap is already 999.
Note
When you connect an account beyond your cap you get the banner "Account limit reached (
{limit}). Upgrade or add an account slot." That banner is the app telling you this add-on exists.
Available on Full only. 3h, 2h and 1h tiers.
Every paid plan runs the automated price sync every 6 hours. That is the same on Growth, Growth + Markets and Full. The Sync speed add-on is the only way to go faster, and it is offered on Full only. You choose one of three tiers: every 3 hours, every 2 hours, or every hour.
When it is worth it. Your competitors move price often, your margins are thin, and a stale Amazon price on your Shopify product page or your Buy Box position costs you real money within hours. A 1h cadence means your Buy Box history in Analytics is also six times denser, which makes the trend genuinely readable.
When it is not. If your catalogue is slow-moving, or you sell products with few competing offers, a 6h cadence is almost always enough. Remember that Sync now on the Dashboard is unlimited and free on every plan, so a one-off urgent refresh never requires this add-on.
Note
Sync speed changes the price sync cadence. The repricer has its own separate Run every setting on the Repricer page, which you can already set as low as 1 hour without any add-on.
Available on any paid plan.
Unlocks the SEO & Rufus AI operation on the product detail page. It rewrites your title, bullets and description so they are optimised both for Amazon's search engine and for Rufus, Amazon's AI shopping assistant, and it returns a set of backend search terms.
When it is worth it. You are publishing listings through Product Sync and your Shopify copy was written for your own storefront rather than for Amazon search. Amazon rewards keyword coverage in a way most Shopify copy does not, and Rufus reads listings as prose. This add-on is the single highest-leverage AI feature if your listings are live but not converting.
Available on any paid plan.
Unlocks the Recommendations AI operation. It returns up to six listing-quality recommendations with a high, medium or low severity, telling you what is weak about the listing. The recommendations are advisory. Nothing is applied to your listing automatically.
When it is worth it. You want a second opinion before you commit to rewriting copy, or you have a lot of listings and you want to know which ones are worth your attention first. It pairs naturally with SEO & Rufus: recommendations tell you what is wrong, SEO & Rufus fixes it.
Available on any paid plan. Bundles the two AI add-ons above.
AI Pro gives you both Amazon SEO & Rufus and AI recommendations for less than buying them separately. If you want both, always buy AI Pro. There is no case where buying the two individually is cheaper.
When you select AI Pro on the Plans page, the app automatically selects the two individual AI add-ons and then disables those two checkboxes, because they are already included. That is expected behaviour and not a bug. If you deselect AI Pro, the two individual add-ons become selectable again.
Add-ons raise a specific limit or unlock a specific feature. They do not change your plan's other caps. Buying AI Pro on Growth does not increase your monthly allowance of 50 AI operations; it only unlocks the two extra operations you can spend that allowance on. If you need more AI actions rather than more AI features, look at The AI allowance and your own key, where a bring-your-own-key setup bypasses the allowance entirely.
Likewise, an extra account slot does not raise your mapped-product cap or your market mapping cap. Only a plan change does that.