A: Hey there, Sumo-ling! Thank you for your interest in Squirrly SEO.

The purpose of codes is to customize and scale your usage of Squirrly SEO according to your specific needs.

- Higher Tiers Mean Higher Usage Limits: Each code you purchase allows you to increase feature usage limits. This includes more keyword searches per month, more pages that you can add as Focus Pages, and the ability to audit more pages each month.

- Influence on Feature Access: The number of codes you own also affects your access to the following features: 100 per day SERP cloud check ranking on-demand; Custom branding web dev kit; Set custom features for client access; Custom website credit limits. << These features are ONLY available if you have at least 2 codes. Let me know if you need more details about any of these features.

Up until the 3 Codes Plan, the number of codes you have also influences the number of sites you can use Squirrly SEO on at the same time (1 Code Plan = 5 sites, 2 Codes Plan = 10 sites, 3 Codes Plan= Unlimited sites).

From 2 codes upwards, no additional features are added but feature usages limits are progressively expanded. This includes an increase in the number of Focus Pages, keyword searches, and audit suite pages.

It's also important to mention that codes can be stacked to increase your limits. This means you can start with a single code and purchase the Double Plan (2 codes) later. Purchasing those two additional codes included in the Double Plan and redeeming them for your account will upgrade your plan to the Multiple Plan (3 codes).

I hope this clears it but feel free to ask for more details if you need them. :)