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[ARTICLE · art-149862] src=signalsflow.apposters.com ↗ pub= topic=ai-tools verified=true sentiment=· neutral

Find a Reddit post where your SaaS can help. AI writes the comment

SignalsFlow launched a free beta that scans public Reddit posts to find people whose problems match a user's product, scores each post 0–100, and uses AI to draft five comments per post that the user reviews and posts from their own account. The tool generates 3 to 7 "theses" from a product's site or description in under a minute, lets users add up to 50 of their own subreddits, and never signs in to Reddit, reading only public subreddit pages. SignalsFlow is free during the beta with per-user daily limits that reset at 00:00 UTC, and sign-up is via Google with no invite or card required.

read4 min views2 publishedOct 12, 2026

People with the problem, not mentions

The feed looks for the need behind a post, by meaning and by words, not for your product's name. An AI judge checks the top of it.

Beta · free · Reddit, read only

Every day people post about problems your product solves. Most have never heard of it. SignalsFlow finds their posts, and its AI writes a reply that answers each one and suggests your product. You check it and post it yourself.

Free during the beta · Sign up with Google · No invite, no card

The problem

People describe their problem in their own words, not in yours. An alert on your product's name finds mentions, not the people it would help.

Checking a dozen subreddits by hand eats an hour a day, and the good post is a day old when you find it.

It has to answer the post first and bring up your product second. Writing one for every post eats the rest of your day, and tools that post for you get banned.

How it works

Step 1

Give its site or a description. In under a minute the AI writes 3 to 7 theses: the problems your product solves and the needs it meets. You edit them.

Step 2

SignalsFlow picks posts whose authors have one of those problems, whatever words they use. Each is scored 0–100, with what its author wants. What came since your last visit is marked new.

Step 3

One click, and the AI writes five comments that answer the post and suggest your product, or a longer reply under the subreddit's rules. Pick one, edit it if you like, and post it from your own account.

What you get

Each post shows a score from 0 to 100, what its author wants — a recommendation, an alternative, a way out of a struggle — and the problem of yours it fits.

For a post, the AI writes five comments of different lengths. Each answers what the author asked and suggests your product as a way to solve it. Edit one, copy it, mark it answered.

For a longer reply, the AI reads the rules of the subreddit and its thread, and says how you are tied to the product.

Mark a post not a fit, answered or skipped, and it leaves the feed. Counters show how each thesis does.

Add the subreddits your buyers read, on top of the ones every feed shares. Up to 50 of your own.

In numbers

Pricing

No card, no invite and no trial clock. Instead of a price, the beta has limits for each user.

Beta

$0 a month

The limits of a day start over at 00:00 UTC.

FAQ

No, and that is the point. Most people who need your product have never heard of it. The feed finds posts where someone has a problem your product solves or asks for what it does, whatever words they use.

The AI. For a post it writes five short comments, or a longer reply under the subreddit's rules. Each answers what the author asked and suggests your product. You read it, edit it if you like, and post it.

No. It only reads public subreddit pages. You copy the reply the AI wrote and post it from your own account.

Not for SignalsFlow: it never signs in to Reddit. You need your own account only to post your replies.

A shared set that every feed draws on, and the subreddits users add. You can add up to 50 of your own; busy ones are checked more often than quiet ones.

Your product's site or description to write the theses, the public posts it scores, and for a reply, the post with its subreddit's rules and thread.

With Google. No invite, no card and no password; SignalsFlow keeps only the email and the name your account gives it.

SignalsFlow works and is free while it is in beta. It changes often, and each user has limits instead of a price.

Beta · free

Add your product: SignalsFlow finds the people it can help, and the AI writes your reply to each of them.

Free during the beta · Sign up with Google

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