A:AnswerNo
Does not require Wi-fi. SimpliSafe’s Base Station has built-in cellular radio - so you can arm/disarm and manage devices with the Keypad.
However...
Without Wi-Fi you will not be able to arm/disarm the the system with the app locally or remotely - or view cameras or recordings or - receive notifications to cell
SimpliSafe does not use Bluetooth.
A:AnswerNo, you can pay month to month, no contract.
Example:
If you only want to pay from June-August, you can, then call in to cancel. Also you OWN the system.