From apple's documentation it is possible to offer free trials to users, after which they will be auto-billed at the end of the trial
根据苹果公司的文件，可以向用户提供免费试用，之后用户将在试用结束时自动付费
If you offer a free trial, it will begin when a user subscribes. They will be automatically charged when the free trial is over, unless they have turned off auto-renewal. If you choose to offer a free trial, a drop-down menu will be displayed that will allow you to select the free trial duration.
如果您提供免费试用，它将在用户订阅时开始。免费试用结束后，他们将自动收费，除非他们已经关闭了自动更新。如果您选择提供免费试用，将显示一个下拉菜单，允许您选择免费试用持续时间。
http://developer.apple.com/library/mac/文档/ LanguagesUtilities /概念/ iTunesConnect_Guide / 13 _managingin-apppurchases_robert / ManagingIn-AppPurchases.html
Now i don't see this option available when i create a new auto-renewing subscription.
当我创建一个新的自动更新订阅时，我看不到这个选项。
I see a screen like this as shown in docs 
我看到像这样的屏幕，如文档所示
Does someone know where to enable this or is it even possbile?
有人知道在哪里启用它，还是它的所有者?
Or do i have to manually develop the feature by saving the free trial start date?
还是我必须通过保存免费试用开始日期来手动开发这个特性?
3 个解决方案
#1
3
In iTunes, free trial auto-renewing subscriptions are only available for apps that are managed as newsstand applications. You can verify this if you create a new app and mark it as newsstand and then created an auto-renewing product.
在iTunes中，免费试用的自动更新订阅仅适用于作为报摊应用程序管理的应用程序。如果您创建一个新的应用程序并将其标记为newsstand，然后创建一个自动更新的产品，您可以验证这一点。
Cheers!
干杯!
Joel
乔尔
#2
0
For those who have faced with the same issue: Apple has updated their documentation and now it says (please note highlighted paragraph):
对于那些面临同样问题的人:苹果已经更新了他们的文档，现在它说(请注意高亮段):
"If you offer a free trial, it will begin when a user subscribes. The user will be automatically charged when the free trial is over, unless the user has turned off auto-renewal. If you choose to offer a free trial, a drop-down menu will be displayed that will allow you to select the free trial duration.
如果你提供免费试用，它将在用户订阅时开始。免费试用结束后，用户将自动付费，除非用户已关闭自动更新。如果您选择提供免费试用，将显示一个下拉菜单，允许您选择免费试用持续时间。
You must have an existing issue to offer a free trial. If you have no issues added in the Manage Newsstand page, you will not see the option to add a free trial."
你必须有一个现有的问题提供免费试用。如果在Manage Newsstand页面中没有添加任何问题，您将看不到添加免费试用的选项。
However, in my case it was enough to just enable Newsstand mode in Manage Newsstand section of my application.
然而，在我的例子中，它足以让Newsstand模式在我的应用程序的Newsstand部分中实现。
Now I can see Free trial option on Duration and Pricing screen of my auto-renewable subscription.
现在我可以在自动更新订阅的持续时间和价格屏幕上看到免费试用选项。
#3
-2
You forgot to make one option as YES. Set Offer a marketing opt-in incentive? to YES when you are adding Duration to your Auto Renewable Subscription. You'll have a another Option box for how many days your Incentive Duration. The duration periods may be
你忘记了一个选项是YES。提供一个营销选择- - - -激励?当您添加持续时间到您的汽车可再生订阅。你将有另一个选择框，在你的激励持续时间。持续时间可能是
- 7 days
- 1 Month
- 2 Months
- 3 Months
- 6 Months
- 1 Year
Check out the screenshot 
查看截图
#1
3
In iTunes, free trial auto-renewing subscriptions are only available for apps that are managed as newsstand applications. You can verify this if you create a new app and mark it as newsstand and then created an auto-renewing product.
在iTunes中，免费试用的自动更新订阅仅适用于作为报摊应用程序管理的应用程序。如果您创建一个新的应用程序并将其标记为newsstand，然后创建一个自动更新的产品，您可以验证这一点。
Cheers!
干杯!
Joel
乔尔
#2
0
For those who have faced with the same issue: Apple has updated their documentation and now it says (please note highlighted paragraph):
对于那些面临同样问题的人:苹果已经更新了他们的文档，现在它说(请注意高亮段):
"If you offer a free trial, it will begin when a user subscribes. The user will be automatically charged when the free trial is over, unless the user has turned off auto-renewal. If you choose to offer a free trial, a drop-down menu will be displayed that will allow you to select the free trial duration.
如果你提供免费试用，它将在用户订阅时开始。免费试用结束后，用户将自动付费，除非用户已关闭自动更新。如果您选择提供免费试用，将显示一个下拉菜单，允许您选择免费试用持续时间。
You must have an existing issue to offer a free trial. If you have no issues added in the Manage Newsstand page, you will not see the option to add a free trial."
你必须有一个现有的问题提供免费试用。如果在Manage Newsstand页面中没有添加任何问题，您将看不到添加免费试用的选项。
However, in my case it was enough to just enable Newsstand mode in Manage Newsstand section of my application.
然而，在我的例子中，它足以让Newsstand模式在我的应用程序的Newsstand部分中实现。
Now I can see Free trial option on Duration and Pricing screen of my auto-renewable subscription.
现在我可以在自动更新订阅的持续时间和价格屏幕上看到免费试用选项。
#3
-2
You forgot to make one option as YES. Set Offer a marketing opt-in incentive? to YES when you are adding Duration to your Auto Renewable Subscription. You'll have a another Option box for how many days your Incentive Duration. The duration periods may be
你忘记了一个选项是YES。提供一个营销选择- - - -激励?当您添加持续时间到您的汽车可再生订阅。你将有另一个选择框，在你的激励持续时间。持续时间可能是
- 7 days
- 1 Month
- 2 Months
- 3 Months
- 6 Months
- 1 Year
Check out the screenshot
查看截图