There are plenty of apps that can help parents keep an eye on their toddlers. DECCO is a smart sensor that hangs from any door and combines with its app to give parents of young children peace of mind. The motion sensor detects when there is any unwanted activity and lets you know on your smartphone.
The Toddler Monitor alerts you when your kid is on the move. It is compatible with iOS and Android devices. You can manage up to 3 devices at once and give control to up to 3 people.[where to find it]