You can use Refog keylogger for android https://www.refog.com/keylogger-for-android.html  and install it on your boyfriend's phone.This saves the phone's location (determined by the phone's GPS receiver) every time the user makes a call, launches an app, or sends an SMS. You will know exactly what the user did and where he did it.

There are many computer keyloggers on the market. You can find their reviews to choose which is one of the best keyboard recorder that will record all the activities on the computer.

I also had suspicions that my boyfriend was cheating on me. To check this, I installed text spyon https://www.hoverwatch.com/spy-on-text-messages his phone . This program showed me who I am and what my boyfriend is texting about. It's sad, but my suspicions were justified. And it saved me from error and from lies. And you don't need to use any other computer spyware. This one offers a complete package of essential spyware

There are various spy apps, but it is better to do it with his consent. That's what I found Metal calculator online greenmangourmet.com. Now you can easily and simply calculate the weight and cost of metal, or rather, even get the correct data. It's good that there is a convenient service!