If you're really concerned you can try this.
Should be an effective heat sink and is ~5 dollars.
AnkuLua is a good solution for Android in terms of AutoTouch. AnkuLua is what you need. No root is needed.
The following code will click on target.png
click("target.png")
https://play.google.com/store/apps/details?id=com.appautomatic.ankulua.trial