ASO LENS GUIDE
Read App Store's numbers correctly.
Articles on App Store search rank, conversion rate, metadata, and diagnosing a download drop — verified against ASO Lens’s own code and Apple’s documentation, not generic advice.
Start hereMeasurement & diagnosis
Downloads dropped — what to actually check
A download drop means something different depending on which funnel stage it happened at — impressions, page views, or downloads. How ASO Lens’s diagnosis logic actually separates these causes.
Read the article →- 1Impressions
- 2Product page views
- 3Downloads
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- Search & rankHow App Store "estimated rank" is actually measuredWhat the iTunes Search API actually returns — and doesn’t — and how ASO Lens turns that into an estimated rank, based on real API responses.Read →
- MeasurementWhat "App Store conversion rate" actually means“Conversion rate” means something different depending on which counter you use as the denominator — Impressions, Product Page Views, or Downloads. Verified against Apple’s docs and this codebase.Read →
- Product pageApp Store title length: the 30-character limit, in practiceThe 30-character App Store title limit doesn’t always match what JavaScript’s .length reports. How character counting actually works, and the brand-vs-keywords tradeoff.Read →
- Product pageWhat the App Store subtitle does, and the risk in changing itThe subtitle is a 30-character field that also factors into search text relevance. The tradeoff in overlapping its keywords with the title, and the real risk a change poses to existing rankings.Read →
- Product pageHow many App Store screenshots actually show up in searchYou can register up to 10 screenshots, but only the first one to three actually show up in search results. No unsourced “best practices” — only what Apple’s documentation actually states.Read →
- Product pageDo the App Store description and promotional text affect search ranking?The description allows 4000 characters and promotional text 170 — and only promotional text can be updated without a new version. What Apple does and doesn’t say about search ranking, and what each field is for.Read →
- Product pageHow to set the App Store keyword field: the 100-character rulesThe keywords field is 100 characters, comma-separated, with no repeating words from the name or subtitle. What Apple’s docs state — and don’t, including a characters-vs-bytes mismatch between two of its pages.Read →
- Product pageCustom product pages vs product page optimization (A/B testing)Custom product pages (up to 70) versus product page optimization (A/B tests with up to three treatments): limits, what can vary, how people reach each, and how results are measured — only what Apple’s documentation states.Read →
- Product pageApp Store review prompts, and what resetting your rating doesThe rating prompt is capped at three times per 365 days. What the guidelines forbid, how replying works, and the tradeoff in resetting the rating on a new version — only what Apple’s documentation states.Read →
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