Subscribe to the Basic plan from the pricing page — it activates immediately and provides API access for one product. There is no free trial or free tier for the API.
Upgrade to higher-tier plans anytime for additional downloads. When upgrading, you pay the full price of the new plan and get an immediate top-up to the new download limit. Unused downloads from the previous plan remain until the end of the billing cycle.
Cancel anytime before the next billing date.
For free icon access without the API, you can download icons from the website in PNG up to 100×100 px with attribution.