How to Check If Your Startup Idea Already Exists (Free, in 10 Minutes)
October 29, 2026 · Nicheloom
To check whether your startup idea already exists, do four things: describe it in one plain sentence, search recent launches for products that sound like it, look at how much attention those products got, and read what people complain about in their comments. It takes about ten minutes. If something similar exists, that is usually not the end of the idea. It tells you what to do differently.
Below is the method, with two real examples run through Nicheloom's Check your idea tool. The benchmarks come from Nicheloom's own tracking of launches from Product Hunt, GitHub, Hacker News and Y Combinator, sorted into 745 niches that had at least 10 launches between October 1 and October 28, 2026.
Step 1: Write the idea as one plain sentence
Say what it does and who it is for, with no brand words. "Invoice reminders for freelancers" works. "A next-generation platform that empowers creators" does not, because nobody searches for it and no tool can match it.
If you already have a site, you can skip the sentence: paste the link into Check your idea and it reads the page and works out what the product does.
Step 2: Search recent launches
Most new products announce themselves somewhere: Product Hunt, Hacker News, GitHub or Y Combinator. Search those with two or three different phrasings of your sentence, for example "invoice reminder", "payment follow-up" and "chase late invoices".
The faster way is to run your sentence through Check your idea. It finds the niches whose launches sound most like yours and lists the closest products with their upvotes, stars or points, so you can see in one screen who is already out there.
One honest limit: this only covers products that launched on those four platforms. Older companies, products that never launched publicly and tools inside bigger suites will not show up. So also spend two minutes searching Google, the App Store or Chrome Web Store, and Reddit for your sentence.
Step 3: Read the niche numbers, not just the names
A list of similar products tells you that your idea exists. The niche numbers tell you whether it is crowded and whether anyone broke out. Look at three things:
- Launches in the last 28 days. The typical niche has 33. Far above that, many people are building the same thing. Far below, it is quiet.
- Attention compared with the usual. Across all of Product Hunt, 4.2% of launches in this window reached 10 or more upvotes. A niche where 12% do is getting 2.8 times the usual attention. A niche where 0.7% do is getting a fifth of it.
- Steady or one burst. Split the launches by week. Four steady weeks mean ongoing interest. One huge week and three empty ones mean a spike that has passed.
For how to judge these in depth, read how to check if a startup niche is crowded.
Step 4: Read what people say about the closest products
For the two or three closest products, open their Hacker News or Product Hunt threads. The useful comments are the complaints ("too expensive", "I wish it did X", "it broke when I tried Y") because each one is a gap you could fill. A product with great reviews and no complaints is a hard one to beat. A product with many requests it has ignored is an opening.
Two examples
Example 1: "AI meeting notes" (exists, and it is competitive)
Nicheloom matched this to the niche AI meeting note takers, a strong match.
| Measure | Number |
|---|---|
| Launches in 28 days | 70 |
| Launches per week (oldest to newest) | 17, 15, 24, 14 |
| Product Hunt launches with 10+ upvotes | 11.9% (against 4.2% usual) |
| Attention compared with the usual | 2.8x |
The closest launches include Fathom 3.0 (802 upvotes), Wispr Flow Notetaker (577), Pocket (494) and Oats (213). Verdict: this idea exists, it is steady, and the leaders have large followings. A generic "AI meeting notes" tool would be the 71st launch of the month. You would need a narrow angle, such as one profession, one language, or one type of meeting.
Example 2: "Invoice reminders for freelancers" (exists, but nobody broke out)
Nicheloom matched this to invoicing and billing software.
| Measure | Number |
|---|---|
| Launches in 28 days | 144 |
| Launches per week (oldest to newest) | 35, 27, 33, 49 |
| Product Hunt launches with 10+ upvotes | 0.7% (against 4.2% usual) |
| Attention compared with the usual | 0.2x |
The closest launches, such as Invoice Chaser, PayNudge, Nudge and Dueping, got between 1 and 7 upvotes each. Verdict: lots of people are building this, and very few of their launches got noticed. That does not mean there is no demand. It means launching with the same pitch is unlikely to stand out. If you build it, the question is how you reach freelancers differently, not whether the product exists.
What to do when your idea already exists
- Go narrower. A tool for "freelance designers who invoice in two currencies" is a different search from "invoicing".
- Change the price or the model. Free tier, one-time payment, or per-invoice pricing can beat a subscription for some users.
- Pick a channel nobody there uses. If everyone launches on Product Hunt, a niche forum, a newsletter or a marketplace may reach people they do not.
- Fix the complaint. If comments on the leader keep asking for one feature, build around that.
- Walk away early. If a leader is strong, steady and has few complaints, your time may be better spent elsewhere. That is a useful result too.
Check it now
- Open Check your idea and paste your sentence or link.
- Open the matching niche on the niche list and look at the weekly launches.
- Click Watch this niche if you want an email when it changes.
- Talk to five real users before you build anything. Launch data shows what exists, not what people will pay for.
How we counted
- Launches: Nicheloom tracks launches from Product Hunt, GitHub, Hacker News and Y Combinator. A model groups each launch into a niche. Counts are for October 1 to October 28, 2026, with spam and bait listings removed.
- Typical niche: the median launches in 28 days across 745 niches with at least 10 launches is 33.
- Attention: the share of the niche's Product Hunt launches that reached 10 or more upvotes, compared with the same share across all of Product Hunt (4.2% in this window).
- Examples: the two examples are real outputs of the Check your idea tool run on October 29, 2026. Matching is automatic, so a different phrasing can match a different niche.
- Limit: only launches on the four tracked platforms are covered.
Data as of October 29, 2026, from Nicheloom's own tracking.
Frequently asked questions
How do I check if my startup idea already exists? Write your idea as one plain sentence, search recent launches on Product Hunt, Hacker News, GitHub and Y Combinator, then check Google, app stores and Reddit. A tool such as Nicheloom's Check your idea does the launch search for you and shows the closest products and how busy the niche is.
What if someone already built my idea? It is rarely the end. Look at how much attention the existing products got and what users complain about. You can go narrower, change the price or model, reach a different audience, or fix the thing users keep asking for.
How many competitors is too many? There is no fixed number. The typical niche had 33 launches in 28 days in our data. A niche far above that is crowded, but crowded niches can still have room if the launches got little attention, as in the invoicing example.
Is a crowded niche a bad sign? Not always. Many launches can mean real demand, or it can mean many people copying each other. Look at the share of launches that got attention and whether the weeks are steady before deciding.
Can I check an idea for free? Yes. Nicheloom's Check your idea tool is free and needs no account. You can type a sentence or paste a link to your product.