: 苹果官方说法
: https://goo.gl/PTyFsy
: Thank you for your email and being a customer of Apple products and the App
: Store.
: We care deeply about bringing great games to all of our users on the App
: Store. We would love for Valve’s games and services to be on iOS and AppleTV.
: Unfortunately, the review team found that Valve’s Steam iOS app, as
: currently submitted, violates a number of guidelines around user generated
: content, in-app purchases, content codes, etc. We’ve discussed these issues
: with Valve and will continue to work with them to help bring the Steam
: experience to iOS and AppleTV in a way that complies with the store’s
: guidelines.
: We put great effort into creating an App Store that provides the very best
: experience for everyone. We have clear guidelines that all developers must
: follow in order to ensure the App Store is a safe place for all users and a
: fair opportunity for all developers.
: Sincerely,
: Phil
身为一个iOS APP Developer，上架过不少APP也遇过各种苹果的龟毛，
前阵子更因为业务需求研究了该如何实做金流并逃开抽成，说说我的看法：
首先聊聊关于IAP的规定：
1.(IAP) in-App Purchase，意即APP内的购买，跟上架一样需要给苹果30%的税金
2.就算你没有在APP内做购买界面，但有暗示使用者在APP外购买（APP内输入序号)也不行
3.但如果购买的商品并非用于APP而是现实世界，
看你要在APP接Apple Pay (示意图:https://i.imgur.com/4AF94de.png)、
第三方支付(输入卡号) (示意图:https://i.imgur.com/DvfBD9R.jpg)
苹果都接受而且不会抽半毛钱。
（但还是有细微的规范，如给用户必要的提示跟按钮一定要官方给的那颗之类)
什么叫做现实世界呢？
也就是大到买桌子买椅子、小到买机票买车票、甚至缴交课程报名费或协会会员会费
苹果都不会抽的，也没那么智障。
但有一个比较奇怪的例子。
在APP内买杂志并会寄电子版到你的email -> 不属于IAP，苹果不会抽
在APP内买杂志并在APP中阅览 -> 抱歉，属于扩增APP内容，要走IAP给苹果抽。
=========
今天回到这个例子，
首先，Steam有iOSAPP，并且可以购买游戏走第三方支付不用抽
https://i.imgur.com/VwAUN74.jpg
https://i.imgur.com/7WaccRF.jpg
https://i.imgur.com/DvfBD9R.jpg
很合理，我只是透过APP买，又没有扩增这个APP的应用，OK。
那为什么今天Steam Link会被挡呢？
我们用Apple的逻辑“猜想”想一下，
你在Steam Link上买了游戏，于是你可以扩增Steam Link的体验 =>叭叭，这应该是IAP
嘛，是有点奇怪，但很符合Apple龟毛跟死板的想法没错。