Web apps win when they replace a spreadsheet, a PDF workflow or a manual process that a team does every week. StartSeed generates ideas scoped to one workflow, one user type and one monetisation path.
A client portal for small law firms that tracks document requests, deadlines and invoices in one dashboard. Charges €49/month per firm. It could be called Caseload.
A shift-swapping board for restaurant staff where managers approve changes in one tap and payroll syncs automatically. Free for teams under 10, $3/user/month after. It could be called Swapshift.
A gift-registry builder for baby showers and weddings that lets guests contribute to experiences instead of objects. Takes 5% of each contribution. It could be called Giftwrap.
The fastest way to validate: build a one-page version that solves the core workflow for one team. If they use it twice, you have traction.
A workflow someone does weekly, a clear buyer, and a scope small enough to ship in a month without a backend rewrite.
Not to validate. Build a landing page first, collect emails, then decide if the idea is worth the engineering effort.