A BigIdeasDB Alternative Built on Evidence
BigIdeasDB popularised the idea of mining complaints for startup ideas, and it is a reasonable tool. If you are comparing it with Demands, here is how we approach the same problem.
Last updated 2026-08-17
The shared premise
Both products start from the same insight: the best evidence of demand is people describing their problems in public, unprompted, before anyone tried to sell them something.
Both pull from broadly similar places — forums, software review sites, app stores, job boards — and both apply a model to turn raw text into structured opportunities.
Where we differ
- Every score decomposes. You can see all seven dimensions, their weights, and the arithmetic — not just a headline number.
- Evidence strength is measured rather than judged. It is computed from how many independent sources back a cluster, so a model cannot inflate it.
- Every opportunity lists its complaints with links. If our summary and the original post disagree, you will notice.
- We say when evidence is thin instead of writing around it. A weak signal shown honestly is more useful than a confident guess.
What to check in any tool in this category
Ask whether you can get from a claim back to its source in one click. If a tool asserts that a problem is widespread but cannot show you the twenty people who said so, you are trusting its summarisation rather than the evidence.
Ask how the score is computed. A single opaque number is easy to build and hard to act on. You want to know whether an idea scores well because demand is strong or because competition happens to be weak.
Questions
Can I use both?+
Of course. Different tools sample different corners of the internet, and overlap between two independent sources is a stronger signal than depth in either one alone.