How to switch from Trial to In App Purchases in UWP?

Global Delight 1

My app has currently only Trial and Full License. I want to remove having trial and make the app free but handle full license features with in app purchases and as well having some other in app purchases. That means I created an in app purchase called "full version" and i want user to buy this in order to access all features of the app.
I decided to create a durable in app purchase as "full version" to handle it myself. My Question here is I have already people purchased full version of the app using trial/full version handled by Microsoft Store.
How can I get that information and give users who already purchased the full version?

1 answer

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-19T04:40:21.763+00:00
Hello,

Welcome to our Microsoft Q&A platform!

>>My Question here is I have already people purchased full version of the app using trial/full version handled by Microsoft Store. How can I get that information and give users who already purchased the full version?

You might need to do some extra work on this. After you cancel the trial/full mode of your app, you might need to check the license of the app using the StoreContext class in the Windows.Services.Store namespace to see if the customer needs to purchase the durable add-on or not.
You could use the following code:

StoreContext context = StoreContext.GetDefault(); StoreAppLicense appLicense = await context.GetAppLicenseAsync();

In the StoreAppLicense object you get, you could get the full license data via the ExtendedJsonData property. Its template is here: Schema for StoreAppLicense and StoreLicense.
Then you could check the isActive, isTrial or expiration parameter to check if the current user is a trial before.
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Global Delight 1 Reputation point

2019-11-19T06:32:50.413+00:00

I am already checking the license using this method.

The problem with this method is,
When i make my application free all the users get the full license.
So, Is there any way to check if the user has purchased using money/coupon or free.

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-19T09:53:12.893+00:00

The first thing comes up in my mind is the collection API: Query for products. You should be able to query the product records when setting the producttype parameter as application. Then you could check the acquiredDate parameter. If the data is earlier then the data when you change your app to free. Then it means the customer purchase the app in full version before.

Global Delight 1 Reputation point

2019-11-19T10:38:42.4+00:00

According to what i checked while testing this, the acquiredDate is the date app was acquired by the user not the purchase date.

Here is a sample i created to check the details.

ms-windows-store://pdp/?productid=9PDQR4STKK7X

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-20T10:12:30.77+00:00

I'll ask other engineers about this. There might be some time delay.

Global Delight 1 Reputation point

2019-11-20T10:38:49.723+00:00

Meanwhile can you share a screenshot of the sample in your PC?

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-21T08:33:14.57+00:00

You haven't changed your app from trial/ full version yet, right? Maybe you could try to use API from Windows.ApplicationModel.Store NameSpace to get the app receipt. In the App receipt, you could get the purchase data and the license type. If you have a server, you could save the CertificateId value in the server so you can directly check it next time.

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-21T08:34:11.627+00:00

And if you want to do in-app-purchase, then you could switch back and using StoreContext API instead.

Global Delight 1 Reputation point

2019-11-22T03:35:51.687+00:00

What if all the users don't update the app to the latest version(where i send the app receipt to my server) and update to the free version with in-app purchase.
Those users will complain.

So, What i require is a method to check the payment mode so that i can differentiate between those who have used coupons/cards/free, with that i can give my new version free to those who have used cards/coupons and show in-app to other remaining users.
Also, there should be something that tells us how much user has paid for the app.

Global Delight 1 Reputation point

2019-11-22T03:36:02.623+00:00

What if all the users don't update the app to the latest version(where i send the app receipt to my server) and update to the free version with in-app purchase. Those users will complain.

So, What i require is a method to check the payment mode so that i can differentiate between those who have used coupons/cards/free, with that i can give my new version free to those who have used cards/coupons and show in-app to other remaining users. Also, there should be something that tells us how much user has paid for the app.

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-11-25T09:48:58.817+00:00

There are no good ways for the customers that keeps in the old version, my suggestion is that you might guide the customers to update the app.

Get the app receipt and Query for product are the only ways to check the app purchase for ApplicationModel.Store API and StoreContext APIs.

Aqib Nazir 1 Reputation point

2019-12-11T03:14:53.933+00:00

This has the date issue, is it fixed?

According to what i checked while testing this, the acquiredDate is the date app was acquired by the user not the purchase date.

Roy Li - MSFT 31,681 Reputation points Microsoft Vendor

2019-12-11T08:55:55.88+00:00

As @Global Delight mentioned in this pervious reply, the acquiredDate is not the data he wants, that's why I suggested him to use Get the app receipt that could get the purchase receipt of the app.
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