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JARVIS AI Doomsday app icon

Case study

● Live on Google Play

JARVIS AI Doomsday

A voice assistant with a face. A real-time 3D character stands on screen and animates while you talk — answering through the AI provider you choose, seeing through the camera on-device, and remembering only what you ask it to.

Client

iToolApk Ltd · in-house product

Platform

Android

Category

Productivity

Last update

Oct 2026

Status

Live on Google Play

Services: Product strategy3D character & motionAndroid developmentVoice & speechOn-device MLPrivacy & securityLaunch & ASO

Overview

Native Android voice assistant fronted by a real-time 3D character. Seven AI providers, on-device vision and memory, with no ads and no tracking.

The problem

Voice assistants feel like a search box that talks. They are faceless, tied to one company’s AI, and quietly collect far more than they need.

The approach

Give the assistant a presence. JARVIS AI Doomsday puts a cinematic, fully rendered 3D character at the centre of the screen and lets it act as the interface — listening, thinking and answering in character. Behind it sits a provider-agnostic AI layer, so users bring the model they trust and pay only for what they use. Privacy is a feature, not a footnote: speech, vision and memory run on the phone wherever possible, and anything that leaves it needs the user’s say-so.

What I built

  • A native Kotlin + Jetpack Compose app with a Filament render stage for the animated glTF character
  • Wake word, clap and shake triggers, on-device speech recognition and spoken replies
  • A pluggable provider layer for seven AI services, with keys sealed by the Android hardware keystore
  • On-device vision with CameraX and ML Kit object detection, labelling and text recognition
  • Explicit-only memory with a relationship graph, reminders, a diary, message drafting and confirmed calls
  • Guardian safety tools: an emergency contact, location sharing, quiet hours and an outbound-activity log
  • A Ktor companion backend for streaming chat, live data and natural text-to-speech

Key features

What it does

  1. JARVIS AI Doomsday: A character, not a waveform

    01

    A character, not a waveform

    The assistant has a body. A rigged 3D figure is rendered with Google's Filament engine at the phone's native resolution and refresh rate, with greet, idle and thinking animations that react to the conversation.

  2. JARVIS AI Doomsday: Talk to it, hands-free

    02

    Talk to it, hands-free

    Tap the orb, say “Hey Jarvis”, clap twice or shake the phone. On-device speech recognition turns speech into text without it leaving the phone, and every answer is spoken back.

  3. JARVIS AI Doomsday: It can see

    03

    It can see

    Vision mode uses on-device ML Kit models to detect objects, name them and read text with no connection at all. For harder questions it can send a single still frame to your provider — and asks first, every time.

  4. JARVIS AI Doomsday: Your provider, your key, your data

    04

    Your provider, your key, your data

    NVIDIA, Groq, OpenRouter, OpenAI, Anthropic, Gemini or your own Ollama / LM Studio server. Keys are encrypted with the phone's hardware keystore; there are no ads, no analytics and no tracking.

Gallery

Screens

Technology

How it's built

Android JARVIS AI Doomsday Kotlin Jetpack Compose Filament 3D ML Kit CameraX Room Ktor backend Clerk
Platforms → product → technologies

How iToolApk delivers

The process

  1. 01

    Discover

    Understand the users, the market and the problem worth solving.

  2. 02

    Design

    Flows, wireframes and a polished UI system, tested early.

  3. 03

    Build

    Native Android and web engineering with clean, scalable APIs.

  4. 04

    Test

    Real-device QA, performance tuning and privacy review.

  5. 05

    Launch & grow

    Store listing, ASO and SEO, then iterate on real feedback.

Built by iToolApk

Planning a product like JARVIS AI Doomsday? Let's build it together.

iToolApk is the AI and software development studio I founded in 2023. We design and ship mobile apps, web platforms and AI automation for businesses, and publish our own apps on Google Play.

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