Geoff Chih-Fan Chen

Founder and CEO at @VetcationApp. Previous physicist and astronomer at @UCLA.

[Geoff Chih-Fan Chen @GCFChen]

@Akashi203 very impressive! can't wait to try it out

[Geoff Chih-Fan Chen @GCFChen]

@daltonc @sanketsaurav very true. can we measure the information density in a content?

[MyPet Health @VetcationApp]

Henry, the Golden Retriever, and his emotional support ducky at hydrotherapy

[MyPet Health @VetcationApp]

Given the pricing of veterinary care keeps increasing, we are developing a community-intelligent feature where everyone can share their secrets secretly to help others. For example, pricing of med or surgery, or which doctors are great and more affordable. The information shared will be anonymous.

[Geoff Chih-Fan Chen @GCFChen]

chatgpt is down again.....???? @ChatGPTapp

[Geoff Chih-Fan Chen @GCFChen]

@StartupArchive_ The extraordinary people should embrace pain and suffer. We should do more for humanity.

[Geoff Chih-Fan Chen @GCFChen]

chatgpt is down again.....

[Geoff Chih-Fan Chen @GCFChen]

Check out my latest article: RAG Isn’t Magic. It’s Engineering. https://t.co/Hh3LOcd8Kr via @LinkedIn

[MyPet Health @VetcationApp]

Very excited to share that a major update of the Vetcation app is now live on the App Store and Google Play! Vets can now partner with hospitals to provide telemedicine services directly to their clients. Pet owners who link their account to their home hospital will be able to see partnered veterinarians and build direct connections! When partnered, the medical records will be shared to ensure continuous cares.

iOS: https://t.co/JIsJS8jX4p
Android: https://t.co/J78cNU3Sbz

[Geoff Chih-Fan Chen @GCFChen]

@nicoleva_d @sama I am with you. I really need o3 back for my work. 5 is sucks

[Geoff Chih-Fan Chen @GCFChen]

@sama i need o-3 for work. gpt5 is bad

[Geoff Chih-Fan Chen @GCFChen]

@minchoi @GuavaSeedsLinks True! i need o-3. chatgpt 5 is really bad

[Geoff Chih-Fan Chen @GCFChen]

@minchoi gpt 5 is bad i am pretty sure. Please give me back my o-3

[Geoff Chih-Fan Chen @GCFChen]

@DataChaz I need o-3 back

[Geoff Chih-Fan Chen @GCFChen]

@luo_yuehan @aleyda hate got 5

[Geoff Chih-Fan Chen @GCFChen]

I need o-3 back. please... @sama @OpenAI

[Geoff Chih-Fan Chen @GCFChen]

I have been working with chatgpt for all my app developments. I can know when i should switch model, and when I don't need to. I always can get what I need. However, chatgpt 5 is bad.. it made obvious errors and problems when I asked it to do some easy job.

Very disappointed...

[MyPet Health @VetcationApp]

We’re excited to launch our new Addendum feature in Vetcation. Now veterinarians can append timestamped updates and clarifications to any medical report while preserving the original note. This keeps records transparent, accurate, and audit ready.

[MyPet Health @VetcationApp]

Very excited to share that we’ve added a translation feature for pet owners who prefer to learn in their own languages!

We now support:
繁體中文
简体中文
Español
Français
Deutsch
日本語
한국어
Português

[MyPet Health @VetcationApp]

Why did we add this?

Because we believe that every pet owner, regardless of language, deserves equal access to trusted veterinary knowledge.

This update helps us:

1. Honor cultural and linguistic diversity by embracing users’ native languages

2. Promote equity by making learning accessible to those who aren’t fluent in English

3. Foster inclusion so everyone feels seen, welcomed, and supported in our community

Pet health education shouldn’t be limited by language. We’re committed to building a space where everyone can feel empowered to care for their pets with confidence.

This is one step toward a more inclusive, global veterinary community.