Both tools are free to run and neither asks for an email, so the choice comes down to one difference you can see on their pages: Immutable’s Steam Analyser scores capsule art you can upload before a store page exists, and Steam Page Analyzer scores four parts of a store page that is already live. We are Steam Page Analyzer, so read this with that in mind, and note that the pre-launch answer above is theirs, not ours.
Everything below was read off the two live products on 14 September 2026. No claim here is about which tool is more accurate, because neither of us publishes an accuracy study, and one is not implied by anything on either site. Every difference in this post is something you can go and look at yourself right now.
The two tools in one table
| Steam Page Analyzer | Immutable Steam Analyser | |
|---|---|---|
| Where it lives | steampageanalyzer.com | immutable.com, and steamanalyser.com redirects there |
| What is free | 3 analyses a day: overall score, 4 category scores, top issue with its fix, count of the rest | The tool, with no stated limit |
| Email or account | Not required for the free score | Not required. “No account, no email gate” |
| Input it accepts | A public Steam store URL | A Steam URL or an uploaded capsule image |
| What it scores | Capsule, description, screenshots, tags | Capsule art, on six dimensions |
| Scale | Overall score plus four category scores | 0-100, from six dimensions averaged and multiplied by ten |
| Works with no store page | No | Yes |
| Published rubric | No | Yes, with anchors and the formula |
| Paid tier | $29 Full Report per game, every section included | None for the tool. The wider platform is Book a demo, no price stated |
Two rows in that table are theirs and two are ours. That is the whole post in miniature, and the sections below are the detail behind each cell.
What each one actually reads
Ours reads a live store page and returns four category scores: capsule, description, screenshots and tags, plus an overall number, your top issue written out with a suggested fix, and a count of the other issues found. Three runs a day, no account. Coming Soon and Early Access pages work, because both are public pages; what it cannot take is a game with no page at all.
Theirs reads one asset. The Steam Analyser scores your capsule on genre clarity, title readability, contrast and color, uniqueness and polish, brand consistency, and composition. The page describes each dimension in the terms it judges: genre clarity is “Can a player name the genre at a 120x45 thumbnail?”, contrast is “Does the art pop against Steam’s dark #1b2838 background in a fast scroll?”, composition is “Focal point, hierarchy, balance, and crop resilience across every size.”
So the overlap is exactly one category. Our capsule score and their 0-100 are looking at the same image and nothing else in common. Screenshots, description and tags are outside what the Steam Analyser reads at all; on their hub, tags are a separate tool (“an audit of all 20 tag slots against a 725-game top-seller corpus”). If you want your screenshots and your description looked at in the same pass as your art, that pass does not exist on their side.
Before your page exists, theirs is the only one that works
This is the difference that should decide it for a lot of people, so here is their wording rather than ours. From the Steam Analyser FAQ: “Can I use this before my Steam page is live? Yes. Upload the art directly and you’ll get the same six-dimension score and ranked fixes with no store page required.” The hero repeats the offer: “Don’t have a Steam page yet? Upload your capsule for a free score.”
We have no equivalent. Our analyzer takes a URL, so a capsule sitting in a folder on your machine is invisible to it. If you are commissioning art, choosing between three concepts, or iterating with an artist weeks before you set up the Steamworks page, use theirs. That is not a gracious concession, it is the only correct answer for that moment in the timeline.
What we can do for a capsule with no store page is dimensional rather than editorial: the capsule validator checks an uploaded image against Steam’s required sizes and shows you how it holds up at thumbnail scale, entirely in your browser. That is a different question from “is this art any good”, and the capsule design guide and the asset requirements cover the rest.
Method: theirs is published, ours is not
The Steam Analyser has a methodology page carrying a version line that reads “Methodology v1”, reviewed 2026-07-02. It states the six dimensions, that “Each dimension starts at 6, the competent baseline, and moves up or down on observable evidence in the asset”, and that “The six dimension scores are averaged and multiplied by ten.” The tool page invites you to “check the math yourself.”
We do not publish ours at that level of detail. You can see every category score and read every issue in your own report, but there is no public document that lets a stranger reproduce the number from the art. On transparency of method, they are ahead, and a developer who wants to argue with a score rather than accept it will have a better time on their page than on ours.
One thing worth separating carefully, because it looks like a sample size and is not. Under a heading that reads “Methodology”, the tool page prints a counter: “25,000+ unique Steam pages analysed”. That is a usage total. The methodology page itself states no study population, no corpus, and no accuracy measurement, and the 725-game corpus quoted on their hub belongs to the tag tool rather than the capsule analyser. Read the counter as “lots of people have used this”, which is a fair thing for it to say, and not as “this score was validated against 25,000 outcomes”.
Neither product publishes an accuracy study of its page grade. Any tool’s score is a structured second opinion. Change what it flags, then watch your own Steamworks traffic and conversion, which is the only data that settles the question. Our CTR benchmarks give you something to compare that against.
Price, and what each free tool is for
Both free tiers are genuinely free and neither takes an email, which is worth saying out loud in a category full of score walls. Their wording: “No account, no credit card, no 'enter your email to unlock your score’.” Ours: three analyses a day with no account, and the free score stays free whether or not you ever buy.
Where the two businesses behind the free tools differ is what comes next. Ours is a $29 one-time Full Report for a single game, listed on the site, which unlocks every issue with its fix, prioritized recommendations, paste-ready page changes, the deep dives, a competitor comparison, the buyer journey walkthrough, re-analyses with score history, and a PDF. You can see the price before you spend a minute on the tool.
Theirs is a demo. The Steam Analyser sits in a hub of six free tools, and their own copy explains why: “We build growth software for game studios; this free tool shows how we think about store-page performance.” The platform those tools lead to carries a Book a demo button and no price anywhere on the site, with “Trusted by 700+ games” in the footer. Neither model is dishonest. They are just different bets, and the practical consequence is that you can budget for ours from the homepage and cannot budget for theirs without a sales conversation.
There is also a naming fact worth knowing, because it causes real confusion in search results: steamanalyser.com and steampageanalyzer.com are different companies. Type the first one and you are 308-redirected to Immutable’s page with a ?ref=steamanalyser tag on the end. Two other products in this category also ship under the name “Steam Page Analyzer”, which we cover in the wider Steam page analysis tools comparison.
Which one to open, by situation
- Art exists, store page does not. Immutable’s Steam Analyser. Upload the file, get the six-dimension score, no account. Nothing we sell is usable at this point.
- You want to see the rubric before you trust a number. Immutable’s, again. Their methodology page is public; ours is not.
- Your page is live and you want more than the art looked at. Ours. Capsule, description, screenshots and tags in one run, with the top issue and its fix for free.
- You want a fixed, visible price for a full write-up on one game. Ours, at $29, which is on the page before you start. Their equivalent is a demo booking.
- You are choosing between two capsule concepts this afternoon. Run both through Immutable’s tool for the art judgement and both through our capsule validator for size and thumbnail behaviour. They answer different questions and both are free.
- You want to know why your live page converts badly. Start with ours for the page read, then take the findings into the Steam page optimization guide and check your real numbers in Steamworks.
Using both is cheap. Neither charges you to start, neither takes an email, and they disagree about different things, which is the useful kind of disagreement. Where they overlap is one image; where they do not overlap is most of your store page on our side and your entire pre-launch window on theirs.
Frequently asked questions
Is steamanalyser.com the same as steampageanalyzer.com?
No. They are different companies. On 14 September 2026, steamanalyser.com 308-redirects to Immutable’s free Steam tools section at immutable.com/resources/free-steam-tools/steam-capsule-analyzer, with a ref=steamanalyser parameter. Steam Page Analyzer is a separate product at steampageanalyzer.com. The similar names are a coincidence of a crowded category, not a relationship.
Which is free, Steam Page Analyzer or Immutable’s Steam Analyser?
Both. Immutable’s tool states “No account, no email gate” and sets no stated run limit. Steam Page Analyzer gives three analyses a day with no account, including the overall score, four category scores, and your top issue with its fix. Immutable’s paid platform is sold by demo with no price on the site; Steam Page Analyzer’s paid tier is a $29 one-time Full Report for one game.
Can either tool score my capsule before my Steam page is live?
Immutable’s can. Its FAQ states you can “Upload the art directly and you’ll get the same six-dimension score and ranked fixes with no store page required”. Steam Page Analyzer needs a public store URL, so a Coming Soon page is fine but a game with no page at all is not. For size and thumbnail checks on an unuploaded image, our capsule validator runs in the browser.
Which one is more accurate?
Neither company publishes an accuracy study of its page grade, so there is no honest answer to that question in 2026 and this post does not offer one. What you can compare is transparency: Immutable publishes its six-dimension rubric, the 1-10 anchors and the averaging formula, and we do not. Judge any score by whether the fixes it names hold up when you look at your page, then by what your Steamworks numbers do afterwards.
What does Immutable’s Steam Analyser score, exactly?
Six dimensions of the capsule image: genre clarity, title readability, contrast and color, uniqueness and polish, brand consistency, and composition. Each is scored 1-10 from a baseline of 6, and the six are averaged and multiplied by ten for a 0-100 result. Screenshots, description, reviews and trailer are not listed as inputs. Tags are covered by a separate tool on the same hub.