How to Run Reddit Ads Like Google Ads for a Developer Tool

Most B2B teams do one of two things with Reddit. They write it off as a consumer channel. Or they run it like Meta with broad audiences, boosted posts, social-style creative and get social-style results. Neither works for developer tools.

The move that actually works: treat Reddit like paid search. I can't take credit for that framing — Ali Yildirim at Understory laid it out in a LinkedIn post about three ways to treat Reddit Ads like Google Ads, and that post is the inspiration for this one. What I want to add is what happens when you actually run the play on a live developer-tool account for ten weeks, including the anti-keyword discipline and optimization-goal pitfalls.

Here's the headline result for a recent developer-tool client: $0.42 CPC, $19 CPA, and roughly 800 sign-ups across about ten weeks on $15K in spend. That client's other developer-audience paid channels averaged $45–$55 CPA on the same goal. Reddit came in at less than half the blended CPA at almost twice the volume.

One caveat before we dig in: the test ran in Tier 1 geos only — US, UK, Canada, Australia, Western Europe. We intentionally excluded rest-of-world. Reddit will happily burn budget on LATAM and APAC traffic that has high click volume and near-zero fit for most B2B SaaS. Leave geo open and your CPA numbers are lying to you.

Why "Reddit like Meta" fails for developer audiences

Meta-style Reddit means broad interest targeting, polished social creative, and engagement as the KPI. There are four reasons it falls over on a dev audience:

• Developers are hostile to polished brand creative. They smell a deck slide from three scrolls away.
• Broad interest targeting catches tourists in the subreddit, not active problem-solvers.
• CPMs look cheap, but CPA balloons because intent is near zero.
• Developers want to self-serve. They want to install the product, try it in their stack, and see if it works. Gated demos and "Talk to Sales" CTAs die faster on Reddit than anywhere else. If your landing page doesn't get a developer into the product in under two minutes, Reddit is the wrong channel.

The reframe: Reddit shares the same core mechanic as Google Ads — targeted context around specific intent signals. On Google, the signal is a query. On Reddit, it's a subreddit, a keyword in a thread, or a conversation someone's already having about the problem.

The three-bucket structure we used

A quick note on the examples: I'll use Ruby and Elixir as the primary and secondary languages, and "Competitor A" as the competitor we bid against. The real build had one primary language, one secondary language, and one competitor. The structure is what matters, not which language your product is written in.

Subreddit and community targeting

Direct buys in high-intent developer communities: language-specific subs like r/ruby, r/rails, r/elixir; general dev subs like r/programming and r/webdev; and a handful of SaaS and founder-adjacent subs for edge expansion.

Example ad groups: Ruby Communities, Elixir Communities, Adjacent SaaS Communities.

This is the Google Ads brand and brand-adjacent equivalent. You're showing up where your ICP already lives. Volume is capped by community size, but intent density is high. Creative runs in founder voice with plain-language pain. Skip gradient backgrounds, no product shots with fake screenshots.

Keyword targeting (the workhorse)

Reddit keyword targeting on problem-space terms: language names, stack-specific pain ("memory leak in production," "slow Rails app"), and category terms ("application monitoring," "APM").

Example ad groups: Ruby Keywords, Elixir Keywords, General Dev Communities.

This was the volume driver. Keyword targeting catches people actively describing the problem the product solves, mid-thread. The intent is baked in, the same way non-brand search works on Google. 👉 If you do one thing from this post, it's this. 👈

Competitor keyword targeting

Ads against competitor product names and switching-intent phrases. Example ad group: Competitor A Keywords.

This is the direct analog to Google competitor-keyword campaigns, and it's the single most underused lever in B2B Reddit. Someone writing about their current tool in a complaint or comparison thread is the highest-intent moment you can catch on Reddit, and almost nobody is bidding against it. We ran this conservatively. Competitor creative needs tighter discipline because Reddit will reject ads that trash-talk another brand, and that's not the brand you want to build. But the CPC economics come in close to subreddit targeting.

Why we didn't lean on audience-only retargeting

We tested pixel retargeting without a keyword or subreddit layer and it did what you'd expect: collapsed to social-CTR economics. Small audience, no intent signal, no reason for the ad to convert. This is the Meta-style mistake the whole post is arguing against. If you want to re-engage site visitors on Reddit, wrap the retargeting in keyword targeting so you're only served when the user is also in a relevant context.

The Google Ads → Reddit mapping

Credit where it's due: Understory named this parallel first. Here's how the three buckets map:

• Google brand keywords → subreddit targeting in your own user community (if you have one) or language and stack-specific subs where your ICP already lives.
• Google non-brand keywords → Reddit keyword targeting on problem-space terms. The biggest lever.
• Google competitor keywords → Reddit keyword targeting on competitor product names. The most underused lever.

Everything else — article targeting, broad interest placement, audience-only retargeting — is the equivalent of running display with no intent layer. Don't bother until the three core buckets are maxed.

Building the account

Geo targeting first

Restrict to Tier 1 markets from day one: US, UK, Canada, Australia, Ireland, Western Europe — pick the subset that matches where your product has language and payment support, and cross-reference it against where you historically see your best ARR. If 80% of your revenue comes from four countries, those are the four countries you target. Everyone else gets excluded until you've exhausted the primary list. This is the single highest-leverage setting on Reddit, and the default is wrong.

Structure and naming

One campaign per prospecting layer, separated from any retargeting. Never blend, so budget decisions stay clean later. Name ad groups descriptively by targeting type and audience: `Ruby Keywords`, `Competitor A Keywords`, `Adjacent SaaS Communities`. Skip internal codes — they make auditing harder for anyone who didn't build the account, including future you.

Run two to three creative variants per ad group, rotated based on post-click sign-up, not in-platform CTR. Reddit CTR lies. Sign-up doesn't.

Anti-keywords: the overlap tax nobody writes about

With a three-bucket structure, your ad groups compete against each other by default. Reddit will happily serve both your Ruby Keywords ad group and your General Dev Communities ad group on the same impression in r/programming. You end up paying twice for the same user in the same auction.

Anti-keyword and subreddit-exclusion discipline fixes it:

• In your non-brand keyword ad groups, exclude competitor brand names so Ruby Keywords doesn't poach impressions from Competitor A Keywords. Exclude language-specific terms from broader category groups for the same reason.
• In your subreddit ad groups, exclude language-specific subs from General Dev Communities so r/ruby and r/rails only serve through the dedicated Ruby Communities group.

Document the full exclusion list alongside the campaign build in a shared doc. Reddit's UI doesn't surface exclusions cleanly when you're auditing six weeks later, and you will be auditing six weeks later. 😂

The optimization-goal trap

Everything above assumes you're optimizing for website visits (traffic) with on-site tracking and manual bids. That's deliberate. Before you skip it and go straight to conversion optimization or Reddit's newer AI-driven campaign type (Reddit Max, their Advantage+ equivalent), two things have to be true:

1. You need a standard conversion event wired up in Events Manager. Reddit doesn't currently optimize toward custom pixel events — you have to map your goal to one of their standard event types (Sign Up, Purchase, Add to Cart, and so on). If your real conversion is a custom downstream action, you'll need to proxy it to a standard event or you'll stay stuck on traffic bidding.

2. You need enough conversion volume per campaign to train the algorithm. Reddit's documented minimums shift over time, so check the current threshold before you commit. The practical problem is that granular ad-group structure — the whole point of this playbook — splits volume too thin to hit those floors at the campaign level.

The resolution: prove the structure on traffic and manual bids first. Consolidate spend into the winning campaign once you have a clear winner. Then switch optimization goals with a standard event properly mapped. Teams that switch too early blow up their CPA, because the algorithm is training on too few events to make good decisions. And honestly Reddit's algorithm is no where near the maturity level of Google's.

Results

Here's how spend and sign-ups split across the three buckets:

• Subreddit targeting
  • ~45% of spend, ~30% of sign-ups. Mid CPA.
• Keyword targeting (non-brand)
  • ~40% of spend, ~60% of sign-ups. Best CPA.
• Competitor keyword
  • ~15% of spend, ~10% of sign-ups. Mid–high CPA.

CPA trend across the ten weeks: started at $25–$40 in the first two weeks, compressed to $12–$20 once the keyword creative was dialed in. Standard learning-curve shape, same thing you'd see on a new Google Ads account.
What I'd change next time: expand the competitor-keyword bucket. It had the smallest allocation and the most runway left. Don't get too comfy.

For real though

Reddit is the most underrated paid-search channel in B2B right now next to Bing. Everyone's running it like Meta and getting Meta results, which means the inventory is cheap for anyone willing to treat it like paid search instead.

If you're running paid media for a developer tool and Reddit is either dead or broken in your account, that's the kind of thing we builds playbooks for.