Where does the evidence come from?

Public posts on Reddit and Hacker News. We quote them word-for-word and link to the originals, so you can open every one and read it yourself. Nothing is invented.

Isn't this just searching Reddit myself?

It's the part that takes a weekend. We scan hundreds of recent posts, drop the wins and the noise, cluster the real complaints into themes, dedupe them, and score each one, in about a minute. You get the conclusion, not 500 open tabs.

What if a scan finds nothing?

We tell you straight. IdeaFast will never fabricate pain to fill the page. A thin signal is an honest, useful answer, and you can widen your timeframe or try a different community.

Do I need to know which subreddits to pick?

No. Type a topic, a company, a product, or a profession, and we suggest the communities where those people actually gather and complain.

How does the score work?

Each pain theme gets a 0 to 100 score based on how many real posts back it, how recent they are, and how acute the frustration sounds. It's there to help you spend your time on the strongest signal, not to be gospel.

How does billing work?

Monthly plans give you a daily scan allowance. Need more on a busy day? Buy a one-time scan pack that never expires. Cancel anytime, and your plan stays active until the end of the period you've paid for.

Is my data private? Can I delete everything?

Yes. We never sell your data, and you can delete your account and everything tied to it yourself, anytime, from Settings.

Build what people actually want

Stop guessing what to build.
Scan real pain from Reddit.

IdeaFast reads real conversations on Reddit and Hacker News, clusters them into scored pain themes, each backed by quotes you can click, and turns the strongest into startup ideas worth building.

Find real pain, free See how it works

Free to start. Every theme links to real posts.

Built on real conversations

Every pain theme links straight to the original posts, so you can check our work, not just trust it.

The hard truth

Most startups die building something nobody asked for.

The pull to start building is strong. But “I'd totally use that” from your friends isn't demand. It's politeness.

Real demand looks different. It's strangers complaining, asking for help, and duct-taping their own fixes, in public, right now.

The hard part was never having an idea. It's knowing which problems are actually real, before you sink six months into the wrong one.

How it works

From “what should I build?” to “here's the proof” in 60 seconds. Three steps. No guessing. No weekend of doomscrolling.

01

Pick where your customers hang out

Add a subreddit, a topic, a competitor, or a profession. We suggest the right communities as you type.

02

We surface the real pain

IdeaFast scans hundreds of recent posts, throws out the wins and the noise, and clusters genuine complaints into scored pain themes, each with the receipts.

03

Turn pain into a plan

See who's hurting, how strong the signal is, and the ideas worth building. Save the best, validate them, and start with conviction instead of a hunch.

Step 1 · subreddits

Pick where they hang out

Subreddits, topics, competitors, or professions.

r/SaaSr/microsaasr/Entrepreneurr/startupsr/indiehackersr/webdev

Add your own

r/_______

Live sample

This is a real scan. Not a mockup.

Here's the top pain theme IdeaFast pulled from r/Etsy + r/EtsySellers (past month). Every quote links to the actual post, so go read them yourself.

92score

Customer dispute and refund process issues

r/Etsy

Etsy sellers dealing with issues related to buyers, refunds, and negative feedback. These posts reflect confusion and anxiety in addressing buyer-related complaints.

30 quotesStrong signal

No invented problems. If the signal's thin, we tell you that too, instead of making something up.

Live research

Real problems from real communities, already scored.

A sample of the free research pages built from real Reddit threads. Every pain links back to its source. Browse all research.

Entrepreneur problems on Reddit

The recurring struggles founders post about, scored with receipts.

r/sales pain points, scored

What salespeople actually complain about, clustered and ranked.

r/shopify pain points, scored

Where Shopify merchants get stuck, each backed by a real thread.

Freelancing pain points

Recurring problems freelancers post about, backed by evidence.

B2B SaaS ideas from real problems

Buildable ideas drawn from real complaints, not guesswork.

Startup ideas for freelancers

Ideas grounded in what freelancers say they need.

Why IdeaFast

Anyone can scroll Reddit. IdeaFast does the part that's hard.

Real evidence, every time

No made-up problems. Each pain links to real posts, quoted word-for-word. If you can't verify it, it doesn't ship.

Sorted, scored, decided

Not 500 open tabs. A searchable ideas database of ranked pain themes, deduped, each with a 0 to 100 score, so you spend your time on what actually matters.

Pain to idea to validation

Go from “people clearly hate X” to a buildable idea and a validation score, without leaving the page.

Why I built IdeaFast

I'm Shubham, a first-time founder. I wasted months building things I assumed people wanted, then watched them land with a thud. The problem was never effort. It was that I trusted my gut over actual evidence.

IdeaFast is the tool I wish I'd had. It shows you the real complaints behind an idea, the exact words, the real posts, before you bet your time on it.

It will never invent a problem to make you feel good. If the pain isn't there, you deserve to know before you build, not after.

SB

Shubham Bhatt

Founder, IdeaFast

Pricing

Start free. Upgrade when you find your problem.

Run real scans, save what matters, and turn pain into validated ideas. Daily scans across Reddit, Hacker News, and the web, with a 7-day free trial on Explorer.

7-day free trial on Explorer· no charge until it ends · cancel anytime

Free to sign up.

Set up a scan and see how IdeaFast works. Subscribe to run your own.

Start free

Explorer

For your first serious look.

$9/mo

Find pain in one community at a time.

1 scan / day

1 pain scan per day
1 subreddit per scan
3 evidence quotes per pain
Save, history, CSV & JSON export
7-day free trial

Start 7-day trial

Founder

Straight answers, no fluff.

If something's not here, email shubham@ideafast.pro. We reply.

Ask an AI about IdeaFast

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Find a problem worth your next year.

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Find real pain, free

Free to start. Cancel anytime.

Stop guessing what to build. Scan real pain from Reddit.