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.
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.
Pick where your customers hang out
Add a subreddit, a topic, a competitor, or a profession. We suggest the right communities as you type.
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.
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.
Pick where they hang out
Subreddits, topics, competitors, or professions.
r/_______
Live sample
This is a real scan. Not a mockup.
Here's what IdeaFast pulled from r/SaaS in seconds. Every quote links to the actual post, so go read them yourself.
Founders struggle to land their first paying users
r/SaaSEarly-stage SaaS founders who shipped a product but can't convert interest into paying customers.
- How the f*ck am I supposed to get paid users for my SaaS?Reddit
- How did you get your first 10 paying customers?Reddit
- I built a SaaS but getting users feels impossibleReddit
No invented problems. If the signal's thin, we tell you that too, instead of making something up.
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.
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.
Free to sign up.
Set up a scan and see how IdeaFast works. Subscribe to run your own.
Explorer
For your first serious look.
Find pain in one community at a time.
- 1 pain scan per day
- 1 subreddit per scan
- 3 evidence quotes per pain
- Save, history, CSV & JSON export
- 7-day free trial
Founder
Most PopularFor founders shipping this month.
Wider scans, more evidence, idea validation.
- 5 pain scans per day
- Up to 2 subreddits per scan + broad mode (Reddit + HN + web)
- 10 evidence quotes per pain
- Idea validation + PDF export
- Everything in Explorer
Builder
For agencies and serial builders.
Maximum reach, full validation, exports.
- 15 pain scans per day
- Up to 5 subreddits per scan, all sources
- Up to 30 evidence quotes per pain
- Full validation + PDF report export
- Pain Universe — cross-scan pain trends
- Everything in Founder
Out of scans? Grab a one-time pack of 5. It never expires.
Cancel anytime · 7-day free trial on Explorer · All prices in USD · International cards welcome
Find a problem worth your next year.
Free to start. Real evidence. No more building in the dark.
Find real pain, freeFree to start. Cancel anytime.