Private by default
Useful tools, without the upload.
Check the mechanics, clarify the decision, and keep your unreleased listing in your own browser. These tools do not manufacture keyword volume or an “ASO score.”
Apple
App Store keyword field checker
Count the 100-byte Apple keyword field, expose duplicates, and spot space you can reclaim.
Check a keyword field →Apple + Google PlayApp store metadata validator
Check the common text limits for an Apple App Store or Google Play listing without uploading your copy.
Validate metadata →CreativeApp Store screenshot size reference
Choose a platform and get the current upload constraints, recommendation thresholds, and official source.
Check screenshot sizes →GrowthStore listing experiment brief
Turn an idea into a decision-ready hypothesis, primary measure, guardrail, and learning plan.
Write an experiment brief →