Free developer tools: how to check a free plan before you build on it

Almost every database, hosting platform, email API and AI service says it has a free plan. For an indie hacker or solo builder, the useful question is not whether a plan is free, but whether it stays free long enough to ship, launch and find your first users. This guide walks through what to check before you commit to any free tool.

1. Is it a free tier or a free trial?

A free tier keeps working as long as you stay inside its limits. A free trial ends after a set number of days, or when one-time credits run out. Both are useful, but only a free tier can quietly carry a side project for months. On SaaS Puppy, each tool lists its pricing model, and trials show the number of days when the provider publishes it.

2. Read the exact quotas

"Generous free tier" means nothing until you see numbers. Look for the limit that will hit you first: requests per month, storage, bandwidth, build minutes, emails per day, seats or projects. Then ask what happens at the limit. Some services pause your app, some throttle it, and some start billing automatically.

3. Do you need a card to start?

A card requirement is not bad on its own, but it changes the risk. With a card on file, going over a limit can turn into a bill. Without one, the worst case is usually that the service stops. Every SaaS Puppy listing shows whether a card is required, not required, or not confirmed yet.

4. Can you use it commercially?

Some free plans are for personal or hobby use only. If you plan to charge for your product, check the terms before you build on the free plan, not after launch.

5. Check when the details were last verified

Free plans change often. Limits shrink, new plans appear, and old ones are retired. Prefer information that was checked recently against the provider's own pricing page. SaaS Puppy marks listings that were verified within the last 30 days.

6. Plan your way out

Before you depend on a free tool, know the price of the first paid plan and how hard it would be to move your data elsewhere. A cheap first upgrade and standard export formats make a free plan a safe starting point instead of a trap.

Compare before you choose

Use the SaaS Puppy directory to browse free tools by category, then open Compare to put up to three tools from the same category side by side.