Case study · Wellbeing
Evolum
A daily ritual app that competes with Calm. It grew from zero to €120k in monthly revenue without raising a cent.
Youcef was its co-founder and CTO for 7 years.
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0 → €120k
monthly revenue, no funding
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4.8/5
from 11,000 reviews
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100k+
users
When we have an idea on Monday, it's live on Friday. In 7 years of working together, he built technical foundations so solid that the app still runs on €500 a month. He's the CTO every entrepreneur should have.
Vivien Ducros CEO & co-founder, Evolum The idea
Every day, the app builds a different session based on how the person feels.
Meditation, yoga, music: AI assembles the ritual from the day's mood and goals. More than 10,000 personalized meditations have been generated this way.
28% of users upgrade to a subscription, against a 12% category average.
What drove growth
With no ad budget, two features drove the growth.
- 01
Asking for a rating at the right moment. The app asks right after a session. A 5 goes to the store, anything lower goes to a human. The result: 4.8/5 from 11,000 reviews and around twenty organic downloads a day.
- 02
Weekly live sessions. Evocast lifted retention by 73%. The streaming feature shipped in 11 days.
Seven years live without a rewrite.
The app still runs on its original foundations, for about €500 a month in infrastructure and AI.
For technical teams: the stack
- Flutter
- One codebase for iOS, Android and the web.
- Firebase
- Real-time database with caching, event-triggered Cloud Functions.
- OpenAI
- Generates rituals from mood and goals.
- Make.com
- Emails, subscription management and production of personalized meditations.
Your app can last seven years too.
We build it on foundations another team can pick up, and we publish it on both stores.
Talk about my appFree scoping call, no commitment.