Support

We read every note. The fastest way to reach us is email.

Contact

Questions, bugs, or feedback? Email support@lochan.app and we'll get back to you.

Frequently asked

Is my data private?

Yes. Lochan runs AI models directly on your device, and your conversations stay there. Nothing is sent to us. The only time anything leaves your device is when you choose to share a conversation, and that is encrypted on your device first.

Do I need an account?

No. Lochan works out of the box with on-device models. There is no sign-in.

Which models can I use?

Apple's built-in on-device model, plus downloadable open models like Qwen, Gemma, Llama, Phi, and SmolLM. Switch models per conversation.

Does it work offline?

Yes. Once a model is on your device, Lochan works with no connection at all - on a plane, in a tunnel, or with everything switched off.

What devices are supported?

iPhone and iPad running iOS 26 or later. Apple's built-in on-device model requires iOS 26+, and image input requires iOS 27+.

Troubleshooting

A model won't download. Model files are large. Stay on Wi-Fi, keep the app open during the download, and make sure you have enough free storage.
The built-in model isn't available. Apple's on-device model needs iOS 26 or later on a supported Apple-silicon device. Check Settings and update iOS if needed.
Attachments or image input aren't working. Image input requires iOS 27+ and a vision-capable model. Check the model's capabilities in the model picker.
Still stuck? Email support@lochan.app with your device model and iOS version.