Private AI Models vs ENGRAI

Chat with an AI that lives on your phone, not in the cloud. Private AI is an offline AI chat app: open models like Qwen, Gemma and GLM run entirely on your phone — no server, no account, and after a one-time model download no internet at all. YOUR AI, YOUR DEVICE Cloud chatbots send every word you type to a data center. Private AI computes the answer on your phone's own chip: your chats, your photos and the models themselves stay with you. Uninstall it and everything goes with it. WORKS COMPLETELY OFFLINE Download a model once, then chat anywhere: • On flights, subways and trips abroad • In dead zones and on unreliable connections • Whenever you want answers that stay private Switch on airplane mode if you like — the app won't notice. THE LATEST OPEN MODELS, PHONE-SIZED • Qwen 3.5 (0.8B, 4B, 9B) — fast, smart and multilingual • Google Gemma 4 (E2B, E4B) — mobile-first quality, 140+ languages • GLM 4.6V Flash — flagship-class vision for high-end phones • Ministral 3 — compact, with a 256k context window • Bring your own: load any GGUF model by URL (Hugging Face links work) Models are 0.8–6 GB downloads. A "Fits your device" badge reads your phone's RAM so you know what will run well before you download, the catalog is searchable and filterable, and interrupted downloads resume where they stopped. BENCHMARK IT ON YOUR OWN PHONE Run the built-in benchmark on any downloaded model to see exactly how fast it loads and generates on your hardware — tokens per second, GPU or CPU — and pick the model that fits. CHAT WITH YOUR DOCUMENTS Attach a PDF, text or Markdown file to any chat and ask about it: the text is extracted and searched on your phone, the model answers from the matching passages and tells you which ones it used. Contracts, papers, manuals, notes: the files are never uploaded. UNDERSTANDS IMAGES Every model in the catalog supports vision. Add the optional image-support file, then snap a photo or pick one from your gallery: read documents, translate signs, decode menus, describe scenes. WATCH IT THINK Turn on thinking mode and reasoning models show their step-by-step working in a collapsible panel above the answer — great for math, code and anything worth double-checking. ASSISTANTS Start a chat with a ready-made assistant: Tutor, Writing Coach, Email Helper, Translator, Code Helper, Summarizer, Chef or Travel Planner, each with its own instructions and one-tap starters. An offline translator for your next trip, no signal needed. A REAL CHAT APP • Markdown that renders: code blocks with one-tap copy, tables and lists • Streaming answers with a live tokens-per-second readout • Switch models mid-conversation from the chat header • A system prompt per chat, plus Creative / Balanced / Precise / Thinking presets • Edit, regenerate, copy, select text — or have any answer read aloud (on-device TTS) • Search your chats, pin favorites, light and dark themes • Back up every chat and setting to a single JSON file, and restore anywhere PRIVATE BY DESIGN • Conversations and photos are processed on your device, never in the cloud • No account, no sign-up, no server • GPU-accelerated by llama.cpp — Metal on iPhone, OpenCL on Snapdragon Adreno PRIVATE AI PRO Free to use, with ads that never interrupt an answer (offline, none load). Pro removes all ads and adds your own custom assistants and accent colors. Choose monthly, yearly (with a free trial for new subscribers) or a one-time lifetime unlock. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://llm.chinesepowered.com/privacy.html Formerly Personal LLM: same app, new name. Your questions are yours. Keep them that way.

ENGRAI is a native iOS client for AI-driven character conversations (we call them ENGRAIs). No account, no server, no subscription. Your ENGRAIs, personas, and conversations live on your device and stay there. You bring your own API key from the AI provider you already use: OpenAI-compatible, Anthropic, Google, and including an option for a model running on your own machine or local home server (localhost). Messages go directly from your device to the endpoint you chose. ENGRAI has no backend and never receives them. ENGRAI aims to simplify the complexity of local large language models and setting them up by being an interface that does the technical abstract work under the hood - so that you can plug and use with ease. - NATIVE FLUIDITY: Written in SwiftUI for iOS 26. Long conversations stay smooth, scrolling stays fast, and your battery survives the afternoon. No embedded browser, no web wrapper. - ADAPTIVE IDENTITIES: Define an ENGRAI across identity, appearance, and a detailed behavioral profile — how they plan, how they handle stress, how they treat people above and below them, and how that shifts as pressure accumulates. Characters hold their shape instead of dissolving into the same agreeable voice after twenty messages. - RELATIONAL DYNAMISM: ENGRAIs track how they feel about you, and about each other. Group scenes model who knows what, who is present, and what they think of the person across the room. - WORLD BUILDING DONE RIGHT: ENGRAI allows you to author worlds as your sandbox. Every chaotic moment, recalled event, or in-scene conversation has a backdrop the session members stay consistent and grounded to. You own the quill and the ink. We provide the sheet. - MEMORIES ACROSS TIME: An automatic summarizer distills what matters from long conversations — commitments, revealed facts, shifts in a relationship — and carries it forward, while letting routine chatter fall away. - ENDLESS POSSIBILITIES: Multiple personas, color themes, and typefaces. Complete control over the model, its sampling parameters, and the endpoint it runs on, including a raw parameter field for anything your provider accepts. - PRIVACY VALUED: No accounts. No analytics. No developer server. Nothing to sign up for and nothing to sign in to. Your API key stays in your device keychain. Point ENGRAI at a local model and nothing leaves your network at all. ENGRAI is free. No subscription, no paid tier, and no advertising. The app is created by an indie hobbyist for the user in mind. REQUIREMENTS ENGRAI does not include an AI model and does not provide one. You need your own API key from a third-party AI provider, or your own locally hosted model. You are responsible for any usage costs that the provider charges you, and your use of their service is governed by their terms. ENGRAI is intended for adults aged 18 and over. You are responsible for the content you generate and for complying with the policies of the provider you connect to.