Support

Need help with Open Caption? Email erik@studiofour.io.

Start captions

Turn your iPhone sideways, tap Start, and allow microphone access. Open Caption captions English speech on your iPhone, even without an internet connection.

Use a second iPhone

Open Display Only on the second iPhone. On the phone listening to the conversation, tap Connect and select the display. Allow local network access if asked. Keep both apps open and the phones nearby.

Review or delete a transcript

Go to Settings → History. Select a session to read, copy, share, or delete it.

Model credits

Open Caption uses NVIDIA Parakeet TDT 0.6B v3, converted to Core ML and quantized by Fluid Inference. Original model · Core ML conversion · CC BY 4.0