Privacy First

Your data stays on your device.
Always.

ArX is built around one principle: AI assistance without compromise. No servers, no tracking, no data ever leaving your hands.

Effective date: July 16, 2025  ·  Last updated: July 16, 2025

Zero network activity during AI inference

Every question you ask, every code snippet you generate, every conversation you have — it is all processed entirely on your device using a locally stored AI model. ArX does not have a backend server. It cannot phone home because there is no home to phone.

Introduction

Welcome to ArX, an on-device AI coding assistant powered by flutter_gemma. This Privacy Policy explains how ArX handles — or, more accurately, does not handle — your personal information.

ArX is developed and maintained by Arpandev Bhattacharya, an independent developer. By using the app, you agree to the practices described in this policy.

Information we collect

We want to be direct: ArX collects no personal information, usage data, or analytics of any kind. Here is a plain breakdown of what we do and do not collect.

Personal identifiers Usage analytics Device identifiers Location data Chat history (server-side) Crash reports App preferences (stored locally only)

Any preferences you configure, such as theme settings, are saved exclusively on your device using the operating system's local storage. They are never transmitted anywhere.

How the AI works (fully on-device)

ArX runs an AI language model directly on your device's processor (CPU or GPU). When you type a prompt or ask a coding question:

Your text → stays on your device
Processed entirely inside the app using the locally stored model. Zero bytes are transmitted to any external server during inference. This works even in airplane mode.

The AI model itself runs using Google's MediaPipe framework, which operates as a native component on your device. The model weights are stored in your device's file system after the initial download and are never uploaded or shared.

One-time model download

The only moment ArX uses your internet connection is the first-time model download — a one-time step when you install and set up the app.

During this step, the AI model file (approximately 1.7 GB) is downloaded from a public model repository to your device. After the download is complete:

Model stored locally on your device No internet required after setup No personal data sent during download No account required

Data security

The most secure data is data that was never collected. Because ArX stores nothing on external servers, there is no centralized database that could be breached, subpoenaed, or sold.

All data that does exist locally (preferences, the model file) remains under the protection of your device's own operating system security model. We encourage you to use a device lock screen and keep your OS up to date.

Third-party services

ArX does not integrate any third-party analytics, advertising, tracking SDKs, or social login providers.

The app is built on flutter_gemma and Google's MediaPipe framework for on-device inference. These are runtime libraries that run entirely on your device; they do not report telemetry to Google on your behalf when used inside ArX.

The Google Play Store may collect its own standard installation and update metrics as part of distributing the app. This is governed by Google's own Privacy Policy and is separate from ArX's data practices.

Children's privacy

ArX is designed for developers and is not directed at children under the age of 13. We do not knowingly collect any information from children. Because the app collects no personal data from anyone, there is no special risk to children in this regard.

Changes to this policy

If this policy changes in a material way, the updated version will be published at this URL with a new effective date. For significant changes, we will make a reasonable effort to notify users through an in-app notice.

Continued use of ArX after a policy update constitutes acceptance of the revised terms. We recommend reviewing this page periodically.

Contact

Questions about this policy or ArX's privacy practices? Reach out directly: