Freemium

Freemium works by removing the purchase decision barrier for new users. Instead of convincing someone to pay before they have experienced the product, you give them enough to demonstrate value, then monetize the subset of users who hit the free tier's limits and decide the product is worth paying for. Conversion rates from free to paid typically range from 2-5% for consumer tools and up to 15-20% for B2B SaaS with high switching costs.

The model's economics depend entirely on the cost of serving free users. For AI tools that call external APIs on every use, free tier users directly cost money. For client-side tools that run in the browser — PDF manipulation, image compression, format conversion — free tier users cost essentially nothing beyond bandwidth. This is why Coda One's PDF and image tools can sustain a generous free tier: the processing happens on the user's device, not on Coda One's servers.

The design question for freemium is where to draw the free/paid line. Too restrictive and users do not get enough value to see why they should pay. Too generous and users have no reason to upgrade. Coda One's model — 3 free uses per day for AI tools, unlimited for client-side tools — reflects the different cost structures of each tool category.