Frequently asked questions

Do I need to know how to code?

No. You pick conditions and actions from menus, start from a template, or describe the rule in plain English and let the AI generator draft it. FunctionFlow compiles everything into a native Shopify Function. If you do like code, the Enterprise plan includes a JavaScript code editor.

What are Shopify Functions?

Shopify’s official way to customize checkout: discounts, shipping options, payment methods and checkout validation. They run inside Shopify’s own checkout — no theme edits and no scripts on your storefront — and they replace Shopify Scripts.

Do I need Shopify Plus?

No. FunctionFlow AI is a public app, so its functions work on every Shopify plan, from Basic to Plus.

Will functions slow down my store?

No. Functions run inside Shopify’s checkout infrastructure, not in your theme, and Shopify limits them to run in a few milliseconds.

Can I test a rule before customers see it?

Yes, two ways. The tester runs the real compiled function against a sample cart and explains the result condition by condition. Then test mode publishes it only for customers tagged ff-test, so you can check your real checkout first.

Can a rule run only at certain times?

Yes. Add Time of day or Day of the week conditions for happy hours, weekend offers or delivery cutoffs, in your store’s time zone. To start or end a whole function on set dates, use Active dates. See Happy hours and time-based rules.

Can discounts skip items that are already on sale?

Yes. Tick Exclude items already on sale on a product discount, or use the Product is on sale condition. An item is on sale when its compare-at price is higher than its price.

What if I make a mistake?

Every change to a rule is saved as a version. Compare versions and restore an older one in one click, or unpublish a function instantly.

How many functions can I have?

Your plan sets how many functions you can keep (archived ones don’t count). Separately, Shopify allows up to 25 active functions of each kind per store: app discounts, delivery customizations, payment customizations and checkout validations.

How does the AI generator work?

Describe the rule — “Hide Cash on Delivery for orders above $200”. The AI chooses the kind of function and drafts conditions and actions; FunctionFlow checks the draft against Shopify’s limits; you review and edit it in the builder before anything is published. See AI generator.

Is my customers’ data safe?

FunctionFlow doesn’t store your customers’ personal details. Checkout data stays inside Shopify, and analytics keep only totals. See Your data and privacy.

How am I billed?

Through your Shopify invoice, every 30 days, after a free trial. Change or cancel your plan anytime on the Plans page. See Plans and billing.

What happens if I uninstall?

Shopify removes the app’s discounts and customizations from your checkout, so your functions stop running. Your data is deleted when Shopify sends its data-removal request, typically about 48 hours later.

How do I contact support?

Email us with your store’s .myshopify.com address and a short description of the problem. See Support.