An AI assistant that helps people write better dating messages, from the first opener to the next reply. Half of AI-assisted messages get a response, and 18,500+ users signed up in six months.
Client: Rizz Effect
Industry: Dating, Social & AI Consumer Apps
Platforms: iOS, Android
Technology: Flutter, OpenAI GPT-4, Firebase
Our role: Technical leadership, from concept to launch
Result: 50% reply rate on AI-assisted messages
50% - of AI-assisted messages get a reply
18,500+ - registered users in six months
38% less - time spent writing a message
+62% - more use of AI-generated messages
43% - of users still active after 30 days

Starting a conversation in online dating is hard, and keeping it going is even harder. Many people don’t know what to say first, run out of ideas after a few messages or struggle to strike the right tone.
Rizz Effect set out to build an assistant that turns a simple idea into a natural, personal message in seconds.
Blank-screen moments. Users didn’t know how to start a conversation.
Conversations that fizzle out. Finding the next reply was often the hardest part.
Getting the tone right. A message can sound too formal, too much or too flat.
Templates feel fake. Generic lines rarely get a response.
Built AI message generation. Users describe the situation or add context, and AI suggests personal openers, replies and conversation ideas instead of generic templates.
Helped keep conversations going. The app suggests what to say next in an existing chat, so users never get stuck.
Let users choose their style. Playful, confident, casual or flirty: each message can match the user’s personality and the moment.
Made AI answers fast. We optimised how the app talks to the AI, so suggestions appear almost instantly.
Built one app for iOS and Android. A shared Flutter codebase, with Firebase for sign-in, data, analytics and notifications.
Took it from concept to launch. Our team led the technical approach, working with mobile developers and a UI/UX designer.

In the first six months, Rizz Effect helped thousands of people start conversations that actually go somewhere.

Rizz Effect is an AI-powered messaging assistant for online dating that generates personalised openers, replies and conversation ideas in different tones. Time2Launch led its development from concept to launch, working with a team of mobile developers and a UI/UX designer.
The app is built with Flutter for iOS and Android and uses the OpenAI API with GPT-4 and custom prompt engineering for context-aware suggestions. Firebase provides authentication, Cloud Firestore, analytics and push notifications, with REST API integration and optimised AI response handling for fast results.
The project reflects our experience in AI mobile app development and generative AI. Building an AI assistant or chat-based app? See our Flutter app development services.
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Oleg Romanov
Founder at Time2Launch
hq@time2launch.uk
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