Know where the text lives
Private on-device AI
On-device AI, Apple Intelligence, cloud tradeoffs, and what Data Not Collected means for a writing app.
What Is On-Device AI?
On-device AI runs the model on your phone's own chip, so your text never travels to a server. How it works, why it is private, and where it falls short.
Read this firstGuides in this hub
01 What Is On-Device AI? On-device AI runs the model on your phone's own chip, so your text never travels to a server. How it works, why it is private, and where it falls short. 4 min 02 What is a private AI email assistant? A private AI email assistant helps rewrite or draft messages while minimizing collection, accounts, and cloud exposure. 1 min 03 ChatGPT vs on-device AI for email writing Compare cloud AI and on-device AI for email rewriting, privacy-sensitive work messages, and reusable writing style. 1 min 04 What Is Apple Intelligence? Apple Intelligence is the AI system built into iPhone, iPad, and Mac. What runs on device, what Private Cloud Compute does, and what it means for apps. 4 min 05 On-Device AI vs Cloud AI: Which Should You Use? A plain comparison of on-device and cloud AI across privacy, speed, offline use, capability, and cost, plus which jobs each one actually suits. 4 min 06 What Does 'Data Not Collected' Mean on the App Store? The App Store's four privacy label tiers explained, what Data Not Collected strictly means, and how to check any app's label before you download. 4 min
Use this hub as training material
Private on-device AI can become private agent behavior.
Read the first guide, apply it to one real message, correct what feels wrong, then save the preference so the agent can reuse the behavior next time.
Free to start · No account · Data Not Collected