Most founders default to freemium because Slack and Notion do it. But Slack and Notion have network effects -- your SaaS probably does not. Before you wire up Stripe, you need to decide which model your product actually fits. Get it wrong and you will spend months serving free users who were never going to pay.
Freemium means users get a limited version forever, with the option to upgrade. The bet is that enough free users convert to paid over time to fund the infrastructure that supports the free tier.
Free trial means users get full access for a fixed window -- usually 7 to 14 days -- then must pay or lose access. The bet is that a user who experiences the full product converts at higher rates than one who has been on a watered-down free tier for months.
Neither is inherently better. The wrong choice depends on your product, your customer, and your unit economics.
1. What is your marginal cost per free user?
If serving each free user costs you real money -- compute, storage, AI API calls -- freemium puts pressure on your unit economics from day one. Free trials cap that exposure to a fixed window. If your marginal cost is near zero, freemium is more viable.
2. How long does it take a user to get value?
If a user can feel the product's core value in under 10 minutes, a time-boxed trial works well. If it takes weeks of configuration, data import, or team setup -- think a project management tool or an analytics dashboard -- freemium gives users enough runway to invest before asking them to pay.
3. Who is your buyer?
B2B buyers often prefer free trials. They want to test a specific workflow before going to procurement, and freemium can stall deals because the buyer has no urgency to upgrade. B2C audiences tolerate freemium better because upgrades are personal spending decisions with no approval chain.
Use freemium if all three are true:
Use a free trial if any of these are true:
If you are not sure, start with a free trial. It is easier to introduce a freemium tier later than to retract one after users have come to expect it.
The Next.js SaaS Boilerplate ships with the primitives for both pricing models, so you are not committing to an architecture -- just a configuration.
For free trials: Stripe trial periods are built in. You set a trial length on your Stripe subscription price, and the boilerplate tracks trial status in your database. Trial-end reminder emails go out automatically via Resend. The full implementation is covered in the Stripe trial periods guide -- the short version is that no custom trial logic lives in your codebase; Stripe and webhooks handle the lifecycle.
For freemium: The boilerplate includes a usage limits layer that gates features by Stripe plan. You define what the free plan includes -- 3 projects, 100 API calls, 1 workspace seat -- and the service layer enforces it without scattering plan checks through your UI. The usage limits guide walks through the full pattern.
Both models use the same Stripe subscription setup and the same database schema. Switching between them later is a configuration change, not a rewrite.
Whichever model you choose, track three numbers from day one:
If activation is low, your onboarding needs work. If conversion is low, your pricing page or upgrade prompt needs work. If time to convert is long, consider shortening the trial or tightening the freemium limits. The analytics dashboard in the boilerplate gives you a starting point for tracking these by plan tier.
Founders who spend months on pricing model theory before launching are the ones who never ship. Pick one, define a clear upgrade trigger -- "upgrade to add more than 3 projects" or "your trial ends in 3 days" -- and launch.
You can run a pricing experiment in month two. You cannot run one if you are still building auth from scratch.
Get started with the Next.js SaaS Boilerplate and have your pricing model live this weekend.