Yes. In the Pigzbe app you can choose whether or not you want to approve a task before your child can collect their Wollo reward.
Just select ‘Require approval’ on the confirmation screen.
If you choose this option the app will notify you when your child confirms they have completed the task.
Following this the task will be waiting for you to approve in the parents home screen. Once approved your child will receive the reward originally set for the task.