Most ideas should die early. We'll tell you which.
I have an idea
Get a straight answer: build it, test it, or drop it.
Free with the 2 credits you get on signup. No card.
I don't have one yet
We go and find some — from real market data, not a model's memory.
- Tell us about you — a minute, free. The search is ranked against these answers.
- We search a market — 10–40 min.
- You get up to 5 ideas — or none, if the market is thin.
The search comes out of a paid pack — the signup credits are for checking ideas.
Across 33 real runs, the checks turned down 895 of 1,728 candidates and kept the reason for each. See a real run first.
One real search, as it ran
Market: real estate agent and property management tools for solo agents- Split into 20 niches · 60 searches · 24 pages read in full
- Dropped: Digital business card and contact manager for exchanging info and tracking prospect interactionsWe found no documented problem
- Dropped: Tenant/vendor coordination and communication tool scaled for one-person property management side-hustleToo much hands-on support
- Dropped: Free real estate CRM with automated email campaigns and reply detectionJust an AI wrapper — no real product
- Dropped: Short-term rental / Airbnb-style guest form and document automation tool repurposed for rental applications and lease paperworkNeeds heavy compliance (licenses, certifications)
- Kept: Micro CRM/pipeline tool aimed at solo agents needing a dead-simple deal pipeline without team featuresKept — became “SoloPipe”
- 69 considered · 36 dropped, each with its reason · 5 shortlisted
Best pickSoloPipeTest it first52/100Open the whole run →
What comes back
A verdict, the reasons, and one next step, from either door.
I don't have one yet
The best idea from the run above scored 52.
Test it first
SoloPipe — the best idea the run we publish came back with, scored for one person.
Next move
Ship a narrow landing page targeting the single-user pipeline wedge and test organic community response before writing code.
Real output, unedited. Read the whole Discovery run.
I have an idea
A real check of one idea.
Try a paid pilot
InvoiceRescue
Automated late-payment follow-ups for freelancers and small consultancies.
- Deal-breaker checks
- 12 of 12 passed
- Strongest
- Will they buy and trust it · 8/10
- Weakest
- Proof people want it · 5/10
Next move
Charge 3–5 named buyers for an async paid pilot before broader build.
Real output. Read the whole report.
See a real Discovery run →See pricingWhy not just ask a chatbot?How we compare with another validator
Browse the source-linked pain library, the live feed of problems, the scored idea library, or read how it works.
Longer reads
Check a startup idea against 12 deal-breakers walks through the checks one by one. Short answers live in answers, and every guide is in the guide index.
All 93 guides
- How to find SaaS ideas, and the evidence a complaint leaves out
- AI business ideas you can run alone, where AI does the work you check
- How to build a business that does not depend on you every day
- How to write a business proposal, and when to screen the idea first
- A ChatGPT prompt that tries to kill your business idea
- A freelance side hustle, and how to turn one repeat request into a product
- How to run a business alone without the week breaking
- How to spot a business opportunity in what people complain about
- How to start a SaaS business alone, one check at a time
- How to start a small business by selling before you spend
- Money-making ideas: which are businesses and which are jobs
- Online business ideas you can run without sales calls
- Passive income for beginners: avoid the product that needs you
- How to make passive income online with a small product
- Passive income streams, sorted by how passive they really are
- SaaS product examples, from household names to one-person products
- Service business ideas, and the unpaid work that comes with each
- Side business ideas that fit around a full-time job
- The best side hustles for students who can code
- The most successful small business ideas, and why no industry is safe
- How to test demand with a landing page before you build
- 34 easy businesses to start—and the first risk to test
- 34 easy side hustles, from babysitting to small digital jobs
- 20 home business ideas to test before you buy equipment
- How to write a business plan: prove who pays first
- 15 “most profitable” business ideas, ranked by customer burden
- 15 one-person SaaS companies with public revenue
- 18 side hustles from home, split by what you keep selling
- How to start a business from home without buying first
- How to start your own business when you plan to stay solo
- What business should I start? Use your constraints before a list
- How to make passive income by earning the low-work version first
- How to start a startup: the first month before a larger build
- New business ideas: what builders launched in 2026, and who noticed
- Passive income ideas, sorted by how much support they create
- Side jobs versus a side business: choose the work you actually want
- 20 Business Ideas That Survived a Filter Most Ideas Fail
- How to start a business: test the buyer before the paperwork
- How to start an LLC: check the idea before you file
- Side hustle ideas that can turn into a product
- What is a startup? The point where an idea meets a buyer
- What is SaaS? A one-person product from buyer to support
- Will people actually pay? The signals that count before you build
- An AI rejected your idea. How to tell whether it is right
- A year of access, or one check: what a part-time founder is buying
- You built the app and nobody pays. Which of the three is it?
- How to compare idea validators without fooling yourself
- Choosing between three ideas when you have ten hours a week
- Is your SaaS solving a one-time problem?
- From a complaint to a customer: where the two products diverge
- Preuve AI and WhittleOS: two published answers to a weak result
- A long report or a kept decision: which one you are buying
- Screening a client's idea before you agree to build it
- Can your SaaS sell without demos or sales calls?
- A rejection dataset, and the exclusions that make it mean anything
- Support load by vertical: same price, very different weeks
- Validating an idea on six to ten hours a week
- Before you pay an agency to build your MVP
- Validating with no audience and no ad budget
- When a free idea score is enough, and when it stops being
- What idea validation costs, across the tools that sell it
- Buying a micro SaaS: what the listing does not tell you
- When to shut it down, decided before you are attached
- 50 small business ideas, tagged by the time and calls they need
- E-commerce startup ideas from merchant pain — and which ones we would kill
- Low-cost startup ideas for solo developers, ranked by time to evidence
- Search intent vs. search volume: how we chose what not to publish
- AI startup ideas: the wrapper question is not what kills them
- Am I the right founder for this idea? What the answer costs
- Business ideas for agencies: where to look without inventing demand
- Business ideas for coaches: what software can and cannot solve
- How to price a micro SaaS: the model, the floor, the first number
- Your idea is too broad. What a real narrowing has to contain
- What to build first — and the case where you should not be asking yet
- Will your SaaS be support-heavy? It is decidable before you build
- Do startup idea validators work? We tested ours and published the misses
- Famous startup failures, and the shape they share
- How many customers you need, and how many one person can carry
- How to score a business idea, with the weights published
- Is my startup idea already taken? The wrong question, and the one that works
- Platform risk, counted rather than warned about
- How to validate a startup idea: the checklist, in cost order
- Validating a startup idea without talking to customers
- Where to find real customer problems, and what makes one quotable
- Why AI says your startup idea is great
- Why startup ideas fail: 36 rejections, itemised
- Micro SaaS ideas, each tied to a recorded problem and its source
- SaaS ideas: where they actually die
- Where startup ideas actually come from
- Finding startup ideas on Reddit, and what that method can and cannot tell you
- Tech startup ideas and the question that now decides them
- Y Combinator startup ideas for Fall 2026, re-read for one person
- Best startup idea validation tools (2026): what actually matters
Stop building the wrong thing.
Finding ideas comes out of a paid pack — the signup credits are for checking ideas.
Pay for the decision, not the dopamine.