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Have a question, found a bug, or need help with AI models? Send us an email and we'll get back to you within 24 hours.
[email protected]Frequently Asked Questions
How much storage do AI models require?
Model sizes range from 0.75 GB (Llama 3.2 1B) to 5.5 GB (Gemma 2 9B). Make sure you have enough free storage on your device before downloading. You can delete models you no longer use to free up space.
Which devices are compatible with Cortis?
Cortis requires an iPhone with iOS 16 or later. For the best experience with larger models (7B+), we recommend iPhone 13 Pro or newer with at least 6 GB of RAM. Smaller models (1B-2B) run well on any supported iPhone.
How do I download an AI model?
Open the app and go to the Models tab. Select the model you want to download and tap "Download". Models are downloaded from Hugging Face servers. Make sure you have a stable internet connection — larger models may take several minutes to download.
Do I need an internet connection to use Cortis?
You need internet only to download AI models. Once a model is downloaded, everything runs 100% offline on your device. No internet connection is needed for conversations.
How do I restore my Cortis Pro purchase?
Go to the paywall screen and tap "Restore Purchases". Make sure you are signed in with the same Apple ID used for the original purchase. Cortis Pro is a one-time purchase — there are no recurring charges.
The app is crashing or a model is not responding
Try closing and reopening the app. If a specific model crashes, it may be too large for your device's available memory. Try a smaller model. Make sure you have the latest version from the App Store. If problems persist, contact us with your device model and iOS version.
Why are some models marked as Pro?
Free users have access to 4 models (Llama 1B, SmolLM2 1.7B, Qwen 3 1.7B, Gemma 2 2B). Pro unlocks 5 additional larger and more capable models including Llama 3B, Qwen 2.5 3B, Phi-4 Mini, Mistral 7B, and Gemma 2 9B.
Is my conversation data private?
Yes, completely. All conversations are processed and stored locally on your device. No data is ever sent to any server. There are no accounts, no cloud sync, and no analytics. Deleting the app removes all data permanently.