There are several ways you can conduct tests in your app while also saving paper and trees:

1. Use digital tools: Instead of printing out test materials, use digital tools like Google Forms or SurveyMonkey to create and distribute tests. This will allow you to collect and analyze data electronically, without the need for paper.

2. Use online testing platforms: Many online testing platforms, such as Kahoot or Quizlet, allow you to create and administer tests digitally. These platforms often have features like automatic grading and the ability to track student progress, which can save time and resources.

3. Use virtual classrooms: If you are conducting tests for a large group of people, consider using a virtual classroom platform like Zoom or Google Meet. This will allow you to administer the test online and share materials digitally, eliminating the need for paper.

4. Encourage electronic submissions: When possible, encourage students or employees to submit their test answers electronically. This can be done using a tool like Google Docs or by using a digital form.