Product Strategy | Venture Incubation | 0→1 Execution
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Founder & Director
Founded by Jonah Paul Cretser-Hartenstein, 3rd Horizon is an innovation consulting company based in the San Francisco Bay Area, specializing in corporate-startup collaboration and new business incubation.
Jonah brings a passion for building new-to-the-world digital services, products, and businesses that help people thrive, along with 20 years of experience in digital strategy and product development for startups and multinational corporates.
Previous Work
























Recent Ventures
A selection of new-to-world digital products recently incubated and shipped.
Turn enterprise signals into product direction
ProductPath is a product intelligence workspace that connects disparate feedback channels — app reviews, customer service tickets, surveys, seller reports, and social media — into one unified stream. AI clusters thousands of raw items into themes, tags severity and sentiment, and prioritizes opportunities with evidence behind every recommendation.
Built for product managers drowning in fragmented feedback, ProductPath replaces gut-feel prioritization with statistical confidence. Every insight traces back to source data, every AI answer reports its sample size, and teams can track whether each release actually moved the needle.
Turn enterprise signals into product direction
ProductPath is a product intelligence workspace that connects disparate feedback channels — app reviews, customer service tickets, surveys, seller reports, and social media — into one unified stream. AI clusters thousands of raw items into themes, tags severity and sentiment, and prioritizes opportunities with evidence behind every recommendation.
Built for product managers drowning in fragmented feedback, ProductPath replaces gut-feel prioritization with statistical confidence. Every insight traces back to source data, every AI answer reports its sample size, and teams can track whether each release actually moved the needle.
Search relevance complaints surged to 47 items, the highest of any theme.
Plan group trips together, effortlessly
GroupTripper is a collaborative trip planning app that makes coordinating group travel genuinely fun and easy. Friends and family can build a shared itinerary together — adding flights, accommodations, and activities to a day-by-day calendar that everyone can see and edit in real time.
As founder and builder, I designed the full product from concept to launch on both iOS and Android, including a built-in AI Travel Agent that generates complete day-by-day itineraries based on destination, travel themes, and group size.

Plan group trips together, effortlessly
GroupTripper is a collaborative trip planning app that makes coordinating group travel genuinely fun and easy. Friends and family can build a shared itinerary together — adding flights, accommodations, and activities to a day-by-day calendar that everyone can see and edit in real time.
As founder and builder, I designed the full product from concept to launch on both iOS and Android, including a built-in AI Travel Agent that generates complete day-by-day itineraries based on destination, travel themes, and group size.
Your family's wellness, synced
Family Kinnect is an iOS app that lets families stay connected through health. It surfaces each family member's key daily health metrics — steps, heart rate, sleep, and activity — in one shared dashboard, so you know at a glance when someone might need a check-in.
The AI-powered 'At a Glance' summary reads health patterns each morning and tells you in plain language whether today's a day to push, pace yourself, or rest. Home screen widgets and smart alerts give everyone exactly the information they want without the noise.
Your family's wellness, synced
Family Kinnect is an iOS app that lets families stay connected through health. It surfaces each family member's key daily health metrics — steps, heart rate, sleep, and activity — in one shared dashboard, so you know at a glance when someone might need a check-in.
The AI-powered 'At a Glance' summary reads health patterns each morning and tells you in plain language whether today's a day to push, pace yourself, or rest. Home screen widgets and smart alerts give everyone exactly the information they want without the noise.


Capture the moment. Keep the momentum.
Momentus turns real-world conversations into clear AI notes, action items, decisions, and follow-ups — starting with one tap from your Apple Watch or iPhone. It's built for the conversations that matter most: client meetings, workshops, discovery interviews, field visits, and advisory sessions where pulling out a laptop isn't practical.
Unlike meeting bots designed for Zoom and Google Meet, Momentus is built for in-person conversations first. It records locally, transcribes with speaker awareness, and uses advanced AI to generate structured summaries you can actually act on — all while keeping your data private by default.




Capture the moment. Keep the momentum.
Momentus turns real-world conversations into clear AI notes, action items, decisions, and follow-ups — starting with one tap from your Apple Watch or iPhone. It's built for the conversations that matter most: client meetings, workshops, discovery interviews, field visits, and advisory sessions where pulling out a laptop isn't practical.
Unlike meeting bots designed for Zoom and Google Meet, Momentus is built for in-person conversations first. It records locally, transcribes with speaker awareness, and uses advanced AI to generate structured summaries you can actually act on — all while keeping your data private by default.

There's food in your future
Forkcaster is an AI-powered meal planning and food discovery app for iOS. Tell it your mood, dietary needs, or what's in your fridge — and it instantly generates personalized recipe suggestions and nearby restaurant recommendations tailored to you and your household.
Forkcaster brings together the full meal decision loop in one place: AI-powered discovery, smart weekly meal planning, group polls so households can vote on what to eat, and auto-generated grocery lists built directly from your plan.

There's food in your future
Forkcaster is an AI-powered meal planning and food discovery app for iOS. Tell it your mood, dietary needs, or what's in your fridge — and it instantly generates personalized recipe suggestions and nearby restaurant recommendations tailored to you and your household.
Forkcaster brings together the full meal decision loop in one place: AI-powered discovery, smart weekly meal planning, group polls so households can vote on what to eat, and auto-generated grocery lists built directly from your plan.
