文本相关度（Text Relevance）
解释：算法首先匹配 App Name、Subtitle、100 字符 Keywords 字段及 Primary Category 中的文字。
关键官方依据：
“Search results are based on … text relevance (matches for your app’s title, subtitle, keywords, and primary category).” Apple Developer
注：category的选择也很重要，不要忽视。
关键词字段（100 字符）
解释：仅在 Keywords 字段录入；逗号分隔，不要重复 Name/Subtitle 里的词，避免复数、填充词或无关词。
关键官方依据：
“Keywords are limited to 100 characters… Don’t repeat any words included in your app name, subtitle, or category… Improper use of keywords is a common reason for App Store rejections.” Apple Developer
下载量与使用行为
解释：下载次数、活跃度等行为信号会影响排序。
关键官方依据：
“Search results are based on… user behavior (downloads, …).” Apple Developer
注：这个没有什么可以补充的。
评级与评论
解释：星级和用户评论既出现在搜索卡片，也直接影响排名。
关键官方依据：
“Ratings and reviews influence how your app ranks in search…” Apple Developer
分类索引（Primary Category）
解释：主分类（可选副分类）被搜索算法索引；选错类别可能被拒。
关键官方依据：
“Your primary category and optional secondary category are indexed by our search algorithm.” Apple Developer
转化相关
In‑App Events 卡片
解释：事件卡能在搜索结果中替代已安装用户的截图，提升曝光。
关键官方依据：
“In‑App Events appear in search results… people who’ve downloaded your app will see your event card in search results.” Apple Developer
Promoted In‑App Purchases
解释：推广的 IAP 项可直接显示在搜索页并跳转购买。
关键官方依据：
“Promoted In‑App Purchases appear in App Store search results…” Apple Developer
首屏截图 / App Preview
解释：搜索结果会展示评级及最多三张截图或预览，直接影响点击率。
关键官方依据：
“Your app’s rating and up to three screenshots or app previews may display in search results…” Apple Developer
本地化元数据
解释：为不同地区提供本地语言元数据，可提升相关性和转化。
关键官方依据：
“Consider localizing your product page… so it supports multiple languages.” Apple Developer
对排名几乎无权重的内容
Promotional Text
“Promotional text doesn’t affect your app’s search ranking…” Apple Developer
无关/堆砌关键词
“Terms that are not relevant to the app… Choosing categories that aren’t relevant is grounds for rejection.” Apple Developer
