Free ASO tools
Nine tools for the jobs that come up when you ship an app: naming it, sizing the screenshots, picking a category, checking the listing. All free, none of them ask you to sign up.
Check a live listing
Paste an App Store or Google Play link.
Prepare a listing
No app needed. These run in your browser.
- App Name Generator Brandable app name and subtitle ideas that still fit the 30-character store limits.
- Character Counter Check every store field against its real limit, and see why a non-Latin keyword field holds far more than you think.
- Keyword Density Analyzer Count how often each term appears in your description before Google Play indexes it.
- Screenshot Sizes Every current App Store and Play Store screenshot dimension, with what each slot is for.
- Screenshot Resizer Drop in one screenshot and export it at every size both stores require.
- Localization Checklist What to translate, in what order, before you ship a listing into a new market.
New to App Store Optimization?
The ASO guide explains how store search works. The publishing walkthroughs take you from an empty console to a live listing, step by step.
Read the ASO guideFree tools FAQ
Are these ASO tools really free?
Yes. Every tool on this page is free to use and none of them require an account. Some run entirely in your browser; the ones that read a live store listing fetch public store data only.
Do I need to create an account?
No. There is no signup step and no credit card. ASOScan itself is a paid platform with a 7-day free trial, but these tools work without any of that.
Which tool should I start with?
If your app is already live, start with the free ASO scan. It scores the listing and tells you what to fix first. If you are still preparing to publish, start with the app category picker and the character counter, then follow the App Store or Google Play publishing guide.
Do these tools work for both the App Store and Google Play?
Yes. Every tool covers both stores, and the ones where the two stores genuinely differ (field limits, screenshot sizes, categories) show each store separately rather than averaging them.