Tridroid Presentation: In-App Purchases for an Android Game

I gave a presentation on August 7 to my local Android developers’ Meetup group, Tridroid. The presentation was on in-app purchases. The following topics were covered:

  • In-App Purchases example: Trivial Drive
  • Different revenue models for apps
  • In-App Billing for Android
  • What you should consider for in-app purchases
  • How in-app purchases are handled in other apps (Angry Birds, Temple Run, Candy Crush Saga)
  • In-app purchases in Double Star
  • How many in-app items should you have?
  • How do you call the player’s attention to them?
  • Pricing considerations
  • How to implement In-App Billing
    • TrivialDrive example app
    • Adapting example to your own app

Download.  If you’d like to download the presentation, click here:

Screen shot 2014-08-08 at 7.23.36 AMTridroid Presentation- In-App Purchases for an Android Game

Some slides from the presentation are included below.

Screen shot 2014-08-08 at 7.18.30 AM

Screen shot 2014-08-08 at 7.19.06 AM click image above  to see tutorial article
Screen shot 2014-08-08 at 7.19.46 AMScreen shot 2014-08-08 at 7.20.03 AM Screen shot 2014-08-08 at 7.20.56 AM Screen shot 2014-08-08 at 7.21.16 AM Screen shot 2014-08-08 at 7.21.47 AM Screen shot 2014-08-08 at 7.22.03 AM Screen shot 2014-08-08 at 7.22.37 AMclick image to go to Double Star community

Screen shot 2014-08-08 at 7.23.10 AM


About Bill Lahti

Bill Lahti is a software engineer building mobile applications and knowledge management solutions. Two of his interests are writing for this blog and building Android apps, with strategy games being an area of particular interest.
This entry was posted in Android, Game Design and tagged , , , , . Bookmark the permalink.

3 Responses to Tridroid Presentation: In-App Purchases for an Android Game

  1. Terry Markle says:

    Hi Bill,

    I am new to Android app development and have recently developed and uploaded a simple “free” puzzle game to the Google Play Store. Now I am interested in developing an upgrade to the game and including an in-app billing option in the free game to the upgrade version.

    I read through Google’s “Implementing In-App Billing” document and your Part 1 of Google’s document. According to the above post, you are planning on preparing a Part 2.

    At this time, have you prepared the document on “In-App Implementation in Double Star” (in particular, the section on adding in-app billing code in a way that does not complicate your existing app code)?

    Best regards,

  2. Terry Markle says:

    Thanks for your quick response. Good luck on your article. I like your writing style.

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