Comparison pages usually exist because two products do the same job differently. This one exists because they do not, and the most useful thing we can do is say so in the first paragraph rather than build an argument on a premise that does not hold.
Reading Inflact's own site on 26 August 2026, the product menu lists an Instagram Profile Viewer with sections for posts, stories, Reels and highlights; an Instagram Downloader for photos, video, profiles, stories, highlights and Reels; a profile analyzer, a search tool and a follower tracker; a hashtag generator and a hashtag trends page; and a fonts generator. The pricing page, checked the same day, describes packs built from those modules: a free tier at $0.00, a Research pack listed at $34.00 per month, a Pro pack at $59.00 per month, a custom pack you assemble from modules, and an enterprise route for agencies wanting an API. A 7-day trial was shown at $3.00, with a stated discount on annual billing.
None of that is a comment reply or a DM. That is not a criticism — a research tool has no business pretending to be a messaging tool — it just means a feature-for-feature table would be two columns of blanks, which is why the table on this page compares price and purpose instead.
One product helps you decide who to talk to. The other handles what happens after they talk to you.
What we actually do, stated plainly
PostEngage answers Instagram comments and DMs through the official Instagram Graph API, and nothing else. You connect an account through Meta's own OAuth screen. You build an automation by naming the post, the keywords that should match, the negative keywords that should not, a public reply, a private reply, and whether to treat the person as a lead, which is off by default. You press Try it with a pretend comment, read the replies it shows, then press Go live.
What we do not do is a longer list, and it is worth reading before you spend an afternoon here: no scheduling or publishing, no caption or hashtag generation, no competitor research, no follower growth feature, no analytics product, no WhatsApp, Messenger or Telegram, no flow-builder canvas, no broadcasts, no multi-step nurture sequences.
The two clocks, which shape everything on our side
A comment can be replied to for 7 days after it is posted. A DM can be answered for 24 hours after that person's last message. Those two numbers decide what a reply tool can be: it is a product about being present in a conversation somebody else started, not about starting conversations with strangers.
Research tooling lives on the other side of that line entirely. It is about the period before anyone has said anything to you.
What it costs on our side
One credit is one AI-written reply. Comment replies sent from a template you wrote are free and unlimited, however many people receive them, on every plan, because nothing there needed a model. DMs are free too, up to Free's 1,000-every-30-days cap, which Lite and up remove. Nothing is metered per contact, per follower or per conversation.
The free tier is 100 credits and no card, with DMs free up to 1,000 every 30 days. Lite at $4 a month removes the DM cap, and Creator at $12 adds 3,000 AI replies a month. Packs are $3.99 for 1,000 credits, $14.99 for 4,500 and $39.99 for 12,000. Every figure is on our pricing page.
The part of a reply tool worth actually inspecting
If you are evaluating anything in the reply half of this category, the feature list is the least informative page on the vendor's site. Every one of them can send a message. What separates them is the moment before sending, when something is slightly off — the person already got an answer four minutes ago, it is 2am, the post is travelling and nine hundred comments are queued.
Ours runs the same sixteen checks in the same order every time: kill switch, connection, takeover, auto-reply switch, complaint pause, window, dedupe, burst, bot loop, cooldown, quiet hours, account limits, rate budget, free DM cap, credits, content safety. The first failure ends the attempt and writes the reason into Activity, so a reply that never went out is something you can read rather than a gap you notice a week later. Takeover sits third on purpose: press Take over in Inbox, or reply from Inbox, and the automation stands down on that thread mid-flow until you hand it back. Replying in the Instagram app does not pause it.
Choosing between them, if you are somehow choosing
Ask what the missing piece in your week actually is.
If you cannot find the right creators to collaborate with, cannot tell whether a competitor's audience is real, or want a library of your own posts pulled down for repurposing, that is research work and we are no use to you at all.
If the missing piece is that eighty comments arrived overnight asking the same question and nobody answered them until lunchtime, that is our half. The relevant reading is the comment-to-DM funnel for the mechanics, keyword triggers for the part that decides whether anything fires at all, and the wider field if you would rather see every tool we are asked about before picking one. If the reply tool you are weighing us against is ManyChat, the ManyChat alternative page covers that.
If both halves are missing, buy both. They will not fight each other, because they never touch.
The honest closing line: if you came here looking for an Inflact alternative for DM automation, the thing you are looking for is not an Inflact alternative — it is a reply tool, and you can start on ours with 100 credits and no card, or read what the free tier actually gets you first.