For
AppSprint for founders
AppSprint helps founder-led software companies choose and test a product direction before spending engineering time on it. In a guided session of about an hour to a day, you and your cofounder or early team each build working prototypes with AI, vote privately, refine the winner together, and can send it to testers with a feedback form. It is free with unlimited teammates, and the host pays for AI credits.
The founder's version of the problem
Early on, engineering time is the scarcest thing you have, and the most expensive mistake is spending a month of it on the wrong direction. Cofounders often disagree in ways that are hard to settle by talking, because each is picturing a different product.
The cheap way through is to make each direction real enough to click, compare them side by side, pick one, and show it to a few people it is meant for.
Which template to start with
| Your situation | Template | Time |
|---|---|---|
| One urgent problem and several possible answers | One-Hour Sprint | About 60 minutes |
| You already know what to build and want to make it together | Team Vibe Coding | About one hour |
| You know the general opportunity and want feedback from users | Focused Product Sprint | About half a day, plus tester follow-up |
| A new product, from the problem through to testing | Full Product Sprint | About one day, plus tester follow-up |
What helps a founding team
- Prototypes instead of arguments. Each person describes what people should be able to try, and the AI builder returns a working prototype as a web app, a web game or a design.
- A fair comparison. Prototype authors are hidden during review, dots are anonymous and votes are private until reveal.
- One person decides. The team vote is advisory and the decision-maker confirms the choice.
- One shared build. In Refine Together the decision-maker prompts the AI and everyone else sends anonymous suggestions.
- Extra perspectives. Optional AI teammates add notes and references from an engineering, sales, product or marketing point of view. They never vote, build or decide.
- Feedback from outside the team. The Full and Focused sprints end with a feedback form that testers fill in without an account.
What you leave with
- A working prototype you can download as a single HTML file
- A session summary of the confirmed decisions, with a link you can share
- From the Full and Focused sprints, a Markdown build brief (PRD) and a handoff package for a developer or an AI coding tool
When AppSprint is the wrong tool
If you are a solo founder, most of what the room offers, such as anonymous input, private voting and a separate decision-maker, has nothing to work on. An individual AI app builder is simpler; see AppSprint vs Lovable.
The prototypes are single-file HTML with no backend, no real APIs and no frameworks. They are for choosing and testing a direction, not for launch.