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Heart Rate Monitor

Heart rate monitor for measuring your heartbeat with your phone's camera

Quiz App

Make your own quiz and test yourself

Chores App

Household chores rewards: an organized family, a clean house, happy kids

Resume App

Great app for making a fantastic CV

Scrum App

Work together on Scrum projects

Invoice App

Make invoices with any design, on any device, for free

23apps.com
We build apps that are
* useful
* easy to use
* available on Android
* available on iPhones and iPads
* available as web application

Please enjoy these apps.