Buy a VERDICT. We give you yes or no.
Set it on the concrete. Aim it at the water. Plug in the pack. Leave it for 24 to 48 hours. Come back and the phone tells you if the pool lost water.
The answer is one of three. Leak. Not a leak. Or the water rose. It is judged from where the water ended, not from one splash in the middle of the test. A hot day is not, by itself, a leak. Rain, a shared spa, or a water feature is not called a leak if you mark it.
The report has your company name on it. Email it or text it from the iPhone. The box is $1,299 and includes the pack. The app is Poollevel. It is $0.99 once, and the updates are free.
It will not find the broken pipe. It tells you whether the water went down. You still find where.