Play Store listing optimizer free ASO checker

What this tool does

App store optimization, or ASO, is the work of making your Google Play listing easy to find and easy to say yes to. This checker reads the text you plan to publish and measures it against the limits and rules that matter: character counts, where your keywords appear, how readable the description is, and the kinds of claims and formatting that Google Play's metadata policy forbids.

It is rule-based and runs entirely in your browser. There is no AI service and no server involved, so your unreleased app name and copy stay private.

How to use it, step by step

• Write your first draft. Enter the title, short description and full description. The counters show how much room is left in each.
• Add up to ten keywords. Use phrases a real person would type, such as "habit tracker" or "road signs quiz", not single generic words.
• Check coverage. For each keyword you see whether it appears in the title, short description and full description, and how many times.
• Fix policy warnings first. They put your listing at risk of rejection. Then work on readability and repeated words.
• Preview and copy. See how the listing looks in search results and on the app page, then copy a short report for your team.

How Play Store search uses your title and short description

Google Play does not publish its ranking formula, but it matches searches against your listing text and weighs quality signals such as ratings, installs and stability. In practice we treat the title as your most valuable text, the short description as the next most valuable, and the full description as supporting context. That is a working assumption, not a published rule.

That is why a clear, natural title with your main keyword, and a short description that says what the app does in one line, do more than a long block of repeated terms. Google limits the title to 30 characters and the short description to 80, so every word has to earn its place. For a full walkthrough, read our Google Play ASO guide.

The first lines of the full description matter too, because many users see only the first few lines before tapping "more". Put the value of the app there, in plain language, and use the rest to cover features, who it is for and what makes it different.

What the policy checks look for

• ALL CAPS and special characters in the title. Emoji, symbols and repeated punctuation in the app title are not allowed.
• Performance claims such as best, #1, top, new or free. Google Play does not allow titles and icons to make such claims. Use factual descriptions instead.
• Keyword stuffing. Repeating the same word or phrase many times, or listing keywords in a row, reads as spam and can get a listing suspended.
• Other apps and brands. Mentioning another app or brand in a way that suggests affiliation or tries to borrow its traffic is a violation.
• Misleading claims. Promises you cannot back up, such as guaranteed results, cures or earnings, hurt both conversion and compliance.

Good and bad listings: an example

A weak title reads like "BEST FREE Quiz App #1 Road Signs Test Driving Licence Exam!!!". It breaks the length limit, shouts in capitals, makes ranking claims and stuffs keywords. A better title is "Road Signs Quiz: Driving Test", which is within 30 characters, says what the app is and includes the phrase people search for.

A weak short description repeats the same terms. A stronger one says "Practise road signs with timed quizzes and track your progress before the test", which describes the benefit in natural language and still contains the important words.

Common mistakes

• Writing for the algorithm instead of the person. A listing that reads badly converts badly, whatever its keywords.
• Using the whole 4,000 characters with filler. A tight, scannable description outperforms a wall of text.
• Putting the most useful sentence last. The first lines are what most visitors read.
• Ignoring the graphics. Screenshots and the icon decide whether people read the text at all.
• Never updating the listing. Re-check it when you add features, change positioning or see search terms shift. Make the icon with the app icon generator, and write the matching privacy policy before you submit.