Transform the download of a family application into regular use
Harmonia
Product Growth, Mobile app design, UX/UI design, ASO
CLIENT
Harmonia
Year
2025
Updated
September 2026
Role
Product Growth and UX/UI design
Results
- Over 1,000 downloads
- More than 700 user families
- 25% retention
- 10% conversion
Harmonia needed to solve a common problem in Product Growth: getting downloads isn't enough if users abandon after a few days. So the app was designed to give families a simple reason to come back every day.*
The starting pointt
Harmonia is a tasks and rewards app aimed at families. Parents create routines, assign points, and make progress visible to their children.. The market already has many parental applications. So the challenge wasn't just getting downloaded. Harmonia had to find its place in a busy daily life and remain used after the discovery..
The Product Growth problemh
Each additional action increases the risk of abandonment. A busy parent will not spend several minutes setting up a daily task. A child will not return if his progress remains abstract.. Harmonia's Product Growth focused on three moments::
- understand the benefit of the application from the first screens;;- create a task or assign points in seconds;;- make rewards visible enough to encourage return..
Handling designed for everyday lifen
The interface reduces the number of steps needed to manage tasks and rewards. Navigation also allows you to move from one child to another without rebuilding the family routine in several spaces.. The design remains simple and playful. Each screen helps the parent accomplish a specific action, even at a busy time like the start of the day..
Measurable resultss
Harmonia has exceeded 1,000 downloads and brought together more than 700 families. The app achieved 25% retention and 10% conversion.. These figures make it possible to judge the product beyond the volume of installations. They show how many families continue to use the app and how many move on to the expected commercial stage..
What this project demonstratese
Product Growth is used to understand what prevents a user from obtaining a first result, from returning or from becoming a customer. It avoids developing functions without a clear link to these objectives.. For Harmonia, the work linked acquisition, handling, daily use and conversion. Design decisions were made based on these steps..
Is your product attracting registrants, but too few are staying??
Numinam analyzes the journey, the available data and user feedback. We then identify the first Product Growth project to carry out, from getting started to moving to the paid offer..
Frequently asked questionss
What did Numinam work on on Harmonia??
Numinam took charge of Harmonia's Product Growth and UX/UI design. The work focused on handling, daily use, loyalty and conversion..
How does Harmonia encourage regular use??
Parents create tasks and assign points in seconds. Children see their progress and the rewards to be achieved, which gives concrete interest to each return to the application..
Why measure application retention??
The number of downloads measures acquisition. Retention indicates how many people continue to use the product. It therefore allows you to know whether the application provides lasting value after the first opening..
Is Product Growth suitable for an application that is just starting out??
Yes. With few users, Numinam relies more on interviews and observation of journeys. As the volume increases, the data allows the effect of the changes to be measured more precisely.
Planning a mobile or web app?
Let's talk about how Numinam can design and build your product, end to end.