Rubbish
I was advised to use this by a Tesco Mobile shop staff member. I have twin daughters and bought pay as you go SIM cards for their phone. Was told I can monitor their use and top up the cards from it. Firstly, it does not have the facility to manage 2 phone numbers at the same time. You have to log out of one number and login with the other number to view data use etc. Secondly, It does not store the numbers so every time you go in to the app you have to request a code to get an email with a new code to put in. So switching from one phone number to the other is painfully slow and annoying. Thirdly, more often than not it has technical problems so won’t send the code you need to get into the app. I’ve given up and deleted the app.