Flutter (Dart)
Healthcare
Cross-Platform Mobile App (iOS & Android)
Germany
About The Project
Love to Listen is a relationship coaching platform run by Sonja Ruess, a German sexologist, SPIEGEL bestseller author, and the mesmerizing voice behind a range of perspectives on intimacy issues. Brand’s identity is all about a simple conversation over wellness cliches. Sonja’s users come to her for practical and honest guidance on intimacy, communication, connection, and self-improvement affirmations.
Sonja’s book and in-person coaching ignited a real-life movement. However, over time, several people were unable to attend weekly sessions due to professional, personal, and other commitments. Brand approached us to resolve this issue by building a cross-platform mobile app with an AI assistant.
They wanted an app that brings Sonja’s methodology into daily life through an AI assistant that sounds like the brand and provides micro-exercises that fit into 5-minute blocks, allowing users to practice it daily at their convenience. They wanted a cross-platform app built on a single Flutter codebase, with the German privacy expectations the audience rightly demands built into the foundation.
Key Project Deliverables
Our solutions improved customer engagement and satisfaction with AI guidance.
Sonja AI
We trained a German-language conversational AI coach to perfectly imitate Sonja Ruess’s methodology, tone, and content.
Subscription with 7-Days Free Trial
We built a subscription-based architecture for the app with a 7-days trial option and a monthly subscription.
Daily 5-Minute Exercises
Our developers integrated bite-sized audio and text exercises into the app to blend into real-life user morning routines.
Guided Audio Sessions
The mobile app has built-in audio-led exercises that provide background support and enhance the audio experience for users.
Live Coaching Calls
Users can schedule video calls with Sonja and her team via the mobile app for personalized real-time guidance.
Partner Exercises
Our solution featured custom exercises for couples, tailored to their relationship issues and goals.
Major Project Challenges
Relationship coaching is an intimate, personal, and sensitive topic in which customers expect a high-quality assessment and confidentiality. We had to ensure that every design and architecture aligned with the brand’s “Klartext” voice.
The second priority was to meet the privacy expectations of the German market. Customers place great importance on the security and confidentiality of their information when using these apps. Therefore, hosting within the EU was mandatory, along with full compliance with GDPR regulations. This included all data types such as journals, conversations, coaching sessions, and recordings.
Sonja AI was a challenge in itself, as most AI chatbots are English-native and process data in the American register. For the German audience, we need to train the AI to avoid dialect mismatches and align with Sonja’s vocabulary, pragmatic tone, and rhythm. AI assistant needed to stay within the methodology rather than slip into generic advice and tone.
Additionally, the app needs to cater to a broad audience, including men, women, couples, and both younger and older people, without feeling targeted at any particular group.
Solutions & Impact
We built a Flutter-based relationship coaching platform that combines AI guidance, learning content, live coaching, partner exercises, journaling, and community features into a seamless daily experience. The platform was designed to help users build healthier relationships in just five minutes a day.
To deliver a scalable and engaging product, we implemented several key features.
- Built a cross-platform mobile app using Flutter.
- Optimized performance across a wide range of Android and iOS devices.
- Developed an AI relationship coach powered by a curated knowledge base.
- Implemented EU-hosted AI infrastructure with secure data residency.
- Added intelligent guardrails and escalation paths to live coaching resources.
- Built audio streaming with background playback and lock-screen controls.
- Enabled offline access to downloaded coaching sessions.
- Integrated live video coaching with in-app scheduling and reminders.
- Implemented subscription management using RevenueCat.
- Added free trial flows and streamlined cancellation experiences.
- Integrated push notifications and content delivery systems.
The platform successfully transformed relationship coaching into a daily habit. The product achieved a 4.8/5 rating, built a strong daily-use audience, and provided the Love to Listen team with a scalable foundation for future AI, content, and coaching enhancements.
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Project in Figures
6
Month
2,200
Estimated Man-hours
5
Team Size
Applied Technologies
