> For the complete documentation index, see [llms.txt](https://help.modor.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.modor.io/payment-pricing-and-billing.md).

# Payment, Pricing & Billing

- [How to upgrade from free to premium?](https://help.modor.io/payment-pricing-and-billing/how-to-upgrade-from-free-to-premium.md)
- [How to download an invoice or receipt?](https://help.modor.io/payment-pricing-and-billing/how-to-download-an-invoice-or-receipt.md)