What is the Spot the Differrence - IQ test game, how does it work?

According to the introduction of BUZZ POWDER INC., Spot the Differrence - IQ test is a Trivia game on the Android platform. There is currently a 1.3.3 version released on Jan 25, 2018, you can see the details below.

Find the difference!
Check your IQ now!

1. Find and touch different spot of the two pictures!
2. Check your IQ!
3. Show off to your friends with amazing results!

After the IQ test?
Enjoy the stage mode!

1. Select an open stage!
2. Find 3 different spots of the two pictures!
3. Clear as many stages as you can!

Make sure that third-party apps are allowed on your device: go to Menu->Settings->Security-> and check "Unknown Sources"

Tap the APK file. Allow the app any required permissions it asks for. Then, at the bottom of the installer window, click INSTALL.

You'll see a confirmation the app is installed. Now you'll see the app available in your list of installed apps.