An ASO audit scores a listing across six weighted dimensions — Title & Subtitle (20%), Description (15%), Visual Assets (25%), Ratings & Reviews (20%), Metadata & Freshness (10%), and Conversion Signals (10%) — for a total out of 100. Scoring adjusts for brand maturity: a household-name app with a brand-only title isn't penalized the way a challenger would be. Platform rules differ sharply: Apple's long description isn't indexed for search (optimize it for conversion) while Google Play's full description is indexed (target 2–3% keyword density naturally). Visual assets carry the most weight — the first 3 screenshots show in search and 90% of users never scroll past them, and an iOS preview video lifts conversion 20–40%.
What's inside
The playbook covers
Reference library — 5 deep-dives
Key data
The recommendations are grounded in benchmarks, not opinion:
See it in action
Here's our app on the App Store: https://apps.apple.com/us/app/example/id123456789. Can you audit our listing and tell me what to fix?
Dimension Weight Score Title & Subtitle 20% 6/10 Description 15% 5/10 Visual Assets 25% 4/10 Ratings & Reviews 20% 3/10 Metadata & Freshness 10% 6/10 Conversion Signals 10% 7/10 Weighted total: 47/100 — Grade D
1. Rating is 2.8 (below 4.0) — add in-app review prompts, respond to negatives 2. Description not updated in 8 months — refresh to break the >3mo stale signal 3. Only 3 screenshots — add 5-8 with caption text (indexed on Apple since 2025)
FAQ
Do screenshots and a preview video really affect app downloads?
Yes — Visual Assets is the single heaviest dimension at 25% of the score. The first 3 screenshots appear in search results and 90% of users never scroll past the third, and Apple has indexed screenshot captions for search since June 2025. An iOS preview video autoplays muted and lifts conversion 20–40%. Aim for 5–8 caption-bearing screenshots plus a 15–30s video; fewer than 5 screenshots is always flagged.
How is App Store optimization different from Google Play?
The indexing rules diverge. Apple indexes your title, subtitle, and a hidden 100-byte keyword field, but not the long description — so write that for conversion. Google Play has no hidden keyword field and does index the full 4,000-character description, so target 2–3% keyword density naturally (stuffing is detected and penalized). Google Play also caps screenshots at 8 versus Apple's 10 and requires a 1024x500 feature graphic.
Should a big-brand app worry about missing keywords in its title?
Usually not. Audits classify apps into Dominant, Established, and Challenger tiers. For a Dominant app like Instagram, a brand-only title is valid because users search by brand name, not generic keywords — the brand is the keyword. The guiding question before docking points is "Is this a mistake, or a deliberate choice by a team with data I don't have?" Challenger apps, by contrast, are scored strictly against textbook best practices.
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