Subgrow vs Engain

The short answer

Engain places comments and posts in other people's subreddits from its pool of aged accounts, then sells upvotes to push them up the thread. Subgrow posts one full answer a day in a subreddit your brand owns, from an account that says it's your brand.

Pick Engain for volume in many threads, mention tracking and a team dashboard, if you accept the risk of pooled accounts and bought votes. Pick Subgrow for threads your brand can put its name to, at a flat $99.

At a glance

What Engain does

Engain reads your website and shows you Reddit threads where people ask for a product like yours, including threads that get traffic from Google. You then order comments or posts from its dashboard. They go out from its pool of aged, high-karma accounts, so you never log in to Reddit. You can add upvotes to push a comment toward the top of the thread.

Around that it has brand and competitor mention tracking, AI drafts, scheduling, a check of each subreddit's rules, a Chrome extension, an API and an MCP server. A newer add-on gives you a dedicated account: a new Reddit account that Engain creates, warms up for 10 days and posts from for you.

The real difference: pooled accounts in their threads vs your account in your subreddit

Engain works in other people's communities, from accounts that aren't yours. Its homepage is open about the aim: comments that recommend your business, made to look like real users are recommending it. Its own customer stories describe using several accounts to build one long comment thread around a brand. Upvotes then lift those comments above the rest.

Subgrow does the opposite on every count. The account is your brand's, it says who it is, and it posts in a subreddit your brand moderates. There are no upvotes for sale. Each post is a full answer to one search your buyers make on Google, written after reading the Reddit thread Google already shows for that search.

Subgrow also has a comments plan at $199 a month for threads that already rank on Google. A creator who uses your product posts from their own account, or one of Subgrow's established accounts does. You approve every comment first, and there are no votes for sale.

Pricing, and what a month buys

Engain has three plans. Lite is $199 a month and includes $100 in credits. On Lite a comment costs $10, a post $20 and an upvote $0.10, so the month's credits cover ten comments with no upvotes. Pro is $299 with $200 in credits and a $7 comment. Max is $449 with $300 in credits and a $5 comment. Credits never expire and you can top up anytime.

A dedicated account is $79 a month, and one is included with Pro and Max. Posts and comments from it cost no credits.

Its site states no free trial. Subscriptions and credits aren't refunded in money. Credits return if a comment never goes live or Reddit's Automod removes it, but not if a human moderator does.

Subgrow is $99 a month, flat, for a post every day in your own subreddit. On its comments plan, at $199 a month, you aren't charged for a comment that isn't live within 3 days or is removed within 30.

Accounts, votes and the risk of a ban

Engain sells upvotes at $0.10 each, and on a separate page it sells downvotes at the same price to push other posts and comments lower, competitors' included. Reddit's rules forbid vote manipulation by any means, including voting services and multiple accounts. Engain's own terms ask customers not to manipulate voting systems and to follow Reddit's policies.

A comment that recommends a product from an account that doesn't say who it works for is the kind of thing moderators remove as spam. Engain says its accounts stay clear of moderation, and your own Reddit account isn't exposed when its accounts post. The risk moves to your brand instead, because every one of those comments names you.

Reddit is getting better at spotting it. In March 2026 it began asking accounts that look automated to verify a human is behind them, and said it removes about 100,000 accounts a day. In July it said it catches about 25,000 spammy posts and comments a day.

Engain deserves credit for a clear refund policy and for checking subreddit rules before posting. But the one case it doesn't cover is the common one: a human moderator taking the comment down.

Subgrow doesn't buy or sell votes. In your subreddit it posts from an account that says it's your brand; those posts can still be caught by Reddit's spam filter. On the comments plan, a comment posted by one of our accounts instead of a creator comes from an account that isn't yours, as Engain's do. What differs is that a creator who uses your product is asked first, you approve every comment, and you don't pay for one that is removed within 30 days, whoever removes it.

Where Engain is better

• Volume in other people's threads. Engain can put several comments in one thread and in many threads at once, in any subreddit. Subgrow posts once a day, in your subreddit only.
• Mention tracking. It watches Reddit for your brand and your competitors, with sentiment and email alerts. Subgrow doesn't monitor mentions.
• Teams and agencies. The entry plan covers 3 brands and 2 team members; higher plans add an API, an MCP server and a Slack channel.
• Credits that keep. Unused credits never expire, and its refund policy spells out exactly when credits come back.

Engain's numbers, as it states them

• "Trusted by 1750+ Brands". engain.io homepage, read November 9, 2026.
• "We've seen one well-placed comment generate $50K+". engain.io homepage, read November 9, 2026.
• "4.9/5 Average Rating". engain.io homepage, read November 9, 2026.

Who's behind it: Lukas Lainsalu. Named as Founder & CEO on Engain's pricing page, where he offers a demo call. engain.io/pricing.

How Subgrow works

You give us your website. We find your three closest competitors and the searches your buyers make on Google, and suggest a subreddit name. We open the subreddit with your brand's own Reddit account as its moderator; you never give us a password.

Then we post one answer a day, each written for one of those searches: a how-to, a comparison, a top-10 list or a question for the group. Every post is ready a week early, so you can read it, change it, or skip it. If you do nothing, it goes out on its day. Your blog comes too: your 25 newest articles go in first, then each new one.

Google can show a new post within hours. AI answers take a few weeks. Google Analytics shows the visits that come from the posts; we set up the tracking as we post.

What Subgrow isn't

So you can compare like with like: Subgrow is Reddit only. It doesn't send DMs, doesn't track your rank inside AI answers engine by engine, and posts once a day, not dozens of times. A new subreddit starts with few members; the posts are found through Google and Reddit search first, and the community grows from there. Reddit's spam filter can remove a post even in your own subreddit, and Reddit asks accounts whose posts mostly link to their own business to be careful how often they post (Reddit Help). That's why each post is a full answer that stands on its own, with a link to your site only where it helps.

Subgrow also lists threads elsewhere on Reddit where your buyers are talking, with a suggested reply. You can post it yourself, or hand it to a creator who uses your product and posts from their own account. On the comments plan, if no creator takes a comment, one of our established Reddit accounts posts it; that account isn't yours. We don't buy accounts or upvotes.

Results from our customers

Measured results from subreddits we run, named with each company's permission. The links go to the real subreddits and posts.

• AppFollow19 Gemini answers

  Three weeks after we started posting in r/AppFollow, Gemini answers picked the subreddit as their #1 source 19 times. The post it leaned on most was a comparison of ASO keyword tools, written for a search AppFollow's buyers make.

  r/AppFollow · The most-cited post

• RecraftAbout 10× the views

  Recraft's articles got about ten times more views as posts in r/howto_recraft than on Recraft's own blog. The blog is imported, so the subreddit started full rather than empty.

  r/howto_recraft · One of the imported posts

• Cube23 AI quotes

  Two posts in r/cubedev were quoted 23 times in AI search answers from August to October 2026, as measured by Peec AI: 19 times for the dbt integration post and 4 for the semantic layer one.

  Introducing dbt Integration · The Context Layer Needs a Semantic Layer

Which one to pick

Looking at other options too? See Engain alternatives, or every Reddit marketing tool we've compared.