Android Question Protect your APP on Market

[Fabri]

Hello,
I followed several tutorial for to be sure that APP could be used only from the regular buyer from Play Store. Is there anyone that has solved and could help me? What happen if I change these characteristics to an already published application?
Thanks!

 

[DonManfred]

Implement inappbilling in your app.

 

[Fabri]

Could you be so Kind to let me show a tutorial or an example please?

 

[DonManfred]

The forumsearch IS working! Use it.

https://www.b4x.com/android/forum/pages/results/?query=inappbilling&prefix=8,9,18,21,27

 

[Fabri]

Are you sure this is the procedure for non-consumable app on market? I'm not able to improve my app in that way. Is there any example for non expert like me?

 

[johndb]

Are you sure this is the procedure for non-consumable app on market? I'm not able to improve my app in that way. Is there any example for non expert like me?

I'm unclear as what you mean by "improve my app". The link that @DonManfred offered is the procedure for "in-app" billing whether in-app item is consumable or not.
For Trial to Premium upgrades for example, you don't consume the product as that will force the user to purchase the product again otherwise the same in-app process still applies.

Another link that may be useful: https://www.b4x.com/android/forum/t...chase-tutorial-source-code.63681/#post-402652

 

[Fabri]

@johndb
Simply I'd like to know a procedure to block unauthorized installations of the app. Only the real buyer should be authorized. Exist it?

 

[DonManfred]

Yes. Read the comments and understand what they are telling you.

Implement in-app Billing to your App.

 

[Fabri]

Thanks ....I will try. But you are too far ahead of my knowledge.

 

[KMatle]

But you are too far ahead of my knowledge.

Yes, but... @DonManfred HAS that knowledge. That is the reason why he recommends you to use in app billing. And yes, it's complex but protecting an app is a complex topic.

 

[Peter Simpson]

If it's for a purchase (paid for app) then Manfred suggestion is 100% correct, use in-app billing.
On the other hand if it's for all apps including regular apps with no in-app billing, then you should try the licensing library. With the licensing library all apps should only be run on a device if it's been downloaded from the play store and is directly linked to the the users account.

https://www.b4x.com/android/forum/t...application-with-the-licensing-library.11429/

Enjoy...

 

[Fabri]

But when Erel say "test_1" or "secret value" what does he want say?
Pubblic google key?
What else?

 

[DonManfred]

On the other hand if it's for all apps including regular apps with no in-app billing, then you should try the licensing library.

i was not aware of this Library.
But it does not matter i think.

In my understanding

I followed several tutorial for to be sure that APP could be used only from the regular buyer from Play Store.

he is asking about PAID Apps. This is why i suggested to implement InAppBilling in #2.

 

[Peter Simpson]

You are 100% correct @DonManfred, he did say paid apps.

But just incase he has other apps that were not paid apps but still only wants them to be downloaded from the play store only, then this is also a great library for that too, I know because I use it for all my play store apps, including paid apps. It just verifies that the app was downloaded from the play store and if it's not connected to the accounts the app just closes within a second of it being run, no internet needed after the first verification.