Hi Product Hunt
I m Carter, the solo founder and maker of Otiumz.
Over the past two years, I ve designed, built, and released the product end to end on iOS and Android. It includes multiple private and public profiles, Private and Public Moments, discovery, messaging, voice and video calls, and personalized AI that supports conversation starters, reply suggestions, and optional auto-replies.
The idea came from a problem I experienced personally. After moving from China to the U.S., I saw how differently we communicate with family, close friends, professional connections, and people we re just getting to know yet most social apps expect one profile to represent all of it. As a non-native English speaker, I also know how easy it is to overthink a message or let a conversation fade.
Ask me anything about:
Building a complex consumer mobile app as a solo technical founder
Designing multiple private and public profiles under one account
Building messaging and real-time voice and video calls
Designing AI to support human conversations rather than replace them
Creating a multilingual social experience
The product and engineering mistakes I ve made along the way
Preparing my first Product Hunt launch
I ll answer every question I can over the next 24 hours. I won t share proprietary AI model or provider details, but I m happy to discuss product decisions, privacy principles, architecture at a high level, and what I ve learned from building Otiumz.
Otiumz launches on Product Hunt this Saturday. Fire away!
Hey Product Hunt 👋
I’m Carter, the solo founder and maker of Otiumz.
I started building Otiumz because most social apps ask one profile to represent every part of who we are, even though we show up differently with family, close friends, professional connections, and people we’re just getting to know. Having moved from China to the U.S. and often communicating in a second language, I’ve personally experienced how differences in language, culture, and social context can make it harder to know what to say—or keep a conversation going.
Otiumz is for people who move between different social contexts and want more control over how they show up and communicate in each one.
With Otiumz, you can:
Create multiple private and public profiles—called subaccounts—under one account
Share Private and Public Moments, discover people, message, and make voice or video calls
Create and train multiple Digital Selves and AI Characters, then choose which one powers conversation starters, personalized reply suggestions, and optional auto-replies while you’re away
AI Suggestions and optional auto-replies work across 89 languages and automatically match the language of each conversation. The AI is designed to support real conversations between people—not replace them.
Otiumz is live on iOS and Android, and you can get started for free.
If you try Otiumz, add my private founder profile: @carter. I’ll accept requests from Product Hunt users during launch week and reply personally, so you can test messaging and AI Suggestions with a real contact.
I’d love to hear your product feedback here in the Product Hunt comments so others can join the discussion. For bugs, account-specific issues, or anything private, you can message me directly in Otiumz.
I’d especially love your honest feedback:
Is the multiple-profile concept clear?
Which feature feels most useful?
What would make you come back after trying it?
Thanks for checking out Otiumz. I’ll be here throughout launch day, answering questions and listening closely.
@carter_wang2 Nice launch congrats🙌
@priya_kushwaha1 Thank you
Great idea! It’s really helpful for me when talking to friends from multicultural backgrounds. Do you support Japanese and Korean?"
@jeff_lee20 Yes! Japanese and Korean are both supported, along with 87 other languages. Otiumz automatically detects the language of each conversation for AI Suggestions and optional auto-replies. Glad this would be useful for you!