charles@hartmann:~/projects$

Projects

Everything I build in the open on GitHub: Android apps, self-hosted tools, AI experiments and homelab helpers. This list pulls from GitHub once a day, so new projects show up on their own.

  • 101 public projects
  • 130 GitHub stars
  • 9 languages

a standalone app for rokid ai glasses that is used for displaying map and directions on the glasses

Kotlin 40 starsUpdated Oct 2026

A beautiful, modern wedding photo gallery and guestbook with SSO authentication, PWA support, and comprehensive admin tools.

HTML 28 starsUpdated Oct 2026

A web interface for the Bee AI that uses your api key

HTML 20 starsUpdated Jul 2025

Privacy-first dashcam app for Android. Record drives with GPS overlays, dual-camera support, and full control over your data.

Kotlin 5 starsUpdated Oct 2026

AirGF – AI Virtual Companion. On-device AI girlfriend with Gemma 4 LLM, 3D avatars, image sharing, and image generation.

Kotlin 2 starsUpdated Oct 2026

Local-first Android AI assistant — OCR, on-device LLM, semantic search, tasks & reminders

Kotlin 2 starsUpdated Oct 2026

PixelDream — on-device AI image generation Android app

Kotlin 2 starsUpdated Oct 2026

Modern Android photobooth app built with Kotlin and Jetpack Compose. Fullscreen photobooth experience with event-specific templates, countdown timer, local savi…

Kotlin 2 starsUpdated Oct 2026

A React Native + Expo app that simulates a social media experience powered by a local Ollama model.

TypeScript 2 starsUpdated Oct 2026

A cozy Android virtual pet game where players care for a cute pixel-art fish by feeding it, cleaning its tank, playing mini-games, and decorating its environmen…

Kotlin 2 starsUpdated Oct 2026

An innovative solution combining local AI and recorded memories.

HTML 2 starsUpdated Mar 2026

SkyPulse — native Android live aircraft tracker (Kotlin/Compose) using free open ADS-B data (ADSB.lol + OpenSky) and OpenFlights. No API key, no login.

HTML 1 starsUpdated Oct 2026

Chat with Ollama or run LLMs fully on-device (Gemma, Qwen, DeepSeek, Phi) on Android. Private, open-source, no server required.

Kotlin 1 starsUpdated Oct 2026

Decide justice from your phone. Android jury duty simulator with on-device AI, eleven jurors, and the verdict in your hands.

Kotlin 1 starsUpdated Oct 2026

Auto-caption and burn subtitles into videos on-device. Whisper transcription, ML Kit translation, full caption styling.

Kotlin 1 starsUpdated Oct 2026

💉 Private, on-device GLP-1 injection, pen-stock & weight tracker for Android — with an offline AI coach. Now on Google Play.

Kotlin 1 starsUpdated Oct 2026

Fully on-device AI voice assistant for Android — Gemma 4, Whisper STT, Piper TTS. No cloud. No tracking.

Kotlin 1 starsUpdated Oct 2026

Porchlight Press: a free, privacy-first personalized local newspaper for Android. AI-assisted briefs with full source attribution. Zero operating cost.

Kotlin 0 starsUpdated Oct 2026

Homelab the Right Way — practical Proxmox, OPNsense, Home Assistant and backup guides. Blog + link tree.

HTML 0 starsUpdated Oct 2026

Website, privacy policy and support for Daycare Dons: Diaper Empire, a cartoon 3D caper for Android by Hartmann Studios.

HTML 0 starsUpdated Oct 2026
Show all 101 projects

My complete portfolio — Android apps, AI tools, web apps, and more

Python 0 starsUpdated Oct 2026

A simple local news and weather ai for home use.

HTML 0 starsUpdated Oct 2026

A Docker Stack for a mumble speak bot that utilizes ollama, piper and faster-whisper aloing with a web based contol panel.

Python 0 starsUpdated Oct 2026

A simple web based photobooth designed for a raspberry pi 3b with cups and tts

HTML 0 starsUpdated Oct 2026

A simple self hosted ai powered nutrition tracker and coach

Python 0 starsUpdated Oct 2026

Self-hosted web app that converts bulletin text or documents into 1920×1080 JPG slides. Upload title/content backgrounds, generate slides, and optionally verify…

Python 0 starsUpdated Oct 2026

A simple Web Based Virtual Photobooth with email and sms sending features

HTML 0 starsUpdated Oct 2026

A production-minded MVP wearable camera system built with ESP32-CAM, Android, and a self-hostable backend with AI analysis.

C 0 starsUpdated Oct 2026

Website for Gizmo Gunners: Toon Bot Shooter, an offline cartoon shooter for Android by Hartmann Studios

HTML 0 starsUpdated Oct 2026

A Jackbox-style party game platform — play together on TV and phones

TypeScript 0 starsUpdated Oct 2026

🍳 Voice-powered family recipe recorder – Preserve your family flavors, one recipe at a time

JavaScript 0 starsUpdated Oct 2026

🚢 Cruise Planner — plan your entire cruise without Wi-Fi. Offline itinerary, real ports, weather & offline Bluetooth party chat for cruisers. 🌐 cruise-app-2026.…

Kotlin 0 starsUpdated Oct 2026

Your personal drinking buddy & smart night out wingman. Track your drinks, monitor your estimated BAC, check into bars, and share your live location so friends…

Kotlin 0 starsUpdated Oct 2026

EventCrew website, privacy policy and support. Keep your group together at concerts and festivals.

HTML 0 starsUpdated Oct 2026

Raspberry Pi cable-TV simulator for a personal media library

Python 0 starsUpdated Oct 2026

Wild Lens: Jungle Rescue, a photoreal jungle adventure for Android. Website, privacy policy and support.

HTML 0 starsUpdated Oct 2026

WarmWord landing page and privacy policy

HTML 0 starsUpdated Oct 2026

Android shell for the live ToolTok platform with automated releases, GitHub Pages, and Android E2E validation.

Kotlin 0 starsUpdated Oct 2026

Real-time TikTok live stream gift tracking dashboard. Persistent SQLite storage, auto-reconnect, multi-streamer support, stream history, and top gifters leaderb…

Python 0 starsUpdated Oct 2026

Modern Android sticky notes app with multiple notes and linked home screen widgets.

Java 0 starsUpdated Oct 2026

A feature-rich space shooter game for Android with boss battles, power-ups, achievements, and multiple game modes.

Java 0 starsUpdated Oct 2026

Website, privacy policy and terms for Shape & Shade: Face Shape (Android)

HTML 0 starsUpdated Oct 2026

ScamRadar: AI Scam & Phishing Detector — Free, on-device AI that tells you in 3 seconds whether that text, email, or voicemail is a scam.

Kotlin 0 starsUpdated Oct 2026

Pocket Kin — A cozy storybook virtual-pet game for Android with Wear OS companion, health tracking, and home screen widget

GDScript 0 starsUpdated Oct 2026

Website, privacy policy and support for Pawdub, the Android app that gives your pet subtitles.

HTML 0 starsUpdated Oct 2026

Beautiful Firebase-backed Android shared-expense tracking with honest external payment handoff.

Kotlin 0 starsUpdated Oct 2026

OctoPulse — Beautiful OctoPrint companion for Android (auto-discovery, 1-click pairing, camera, G-code 2D/3D). Coming soon to Google Play. Contains ads. Website…

TypeScript 0 starsUpdated Oct 2026

Dreamloom: private on-device AI dream journal for Android

Kotlin 0 starsUpdated Oct 2026

NutriSnap – On-device AI calorie tracker for Android. Private, offline, and free.

Kotlin 0 starsUpdated Oct 2026

Website, privacy policy and terms for Nightsay: Snore & Sleep Talk (Android)

HTML 0 starsUpdated Oct 2026

AI-assisted MLS-style home search portal with Ollama, Scrapling, and saved searches

Python 0 starsUpdated Oct 2026

Beautiful chess for Android – play a grandmaster-strength AI with an on-device coach, battle friends online, climb the leaderboard

Kotlin 0 starsUpdated Oct 2026

AI-powered fridge & cupboard inventory scanner for Grocy — uses on-device Gemma 4 E2B to detect food items and sync inventory changes

Kotlin 0 starsUpdated Oct 2026

Website, privacy policy, terms and data deletion page for Fieldkey: Plant Rock Coin ID (Android).

HTML 0 starsUpdated Oct 2026

FocusFlow – Pomodoro Timer and Task Manager for Android. Boost productivity with focus tracking, stats and daily goals. Website: https://chartmann1590.github.io…

Kotlin 0 starsUpdated Oct 2026

Modern Android flashlight app with real-device screenshots, signed release CI, and ads-enabled release guard.

Kotlin 0 starsUpdated Oct 2026

Your AI Dungeon Master lives on your phone — solo offline & private, or with up to 5 friends. Coming soon to Google Play for Android.

Dart 0 starsUpdated Oct 2026

A sip bright that accepts calls at a pre configured extension and uses groq for whisper3, local ollama gpt, and openai-egde-tts for tts playback on the sip brid…

Python 0 starsUpdated Oct 2026

An AI powered meeting notes web app

JavaScript 0 starsUpdated Oct 2026

A shared calendar service geared towards couples

TypeScript 0 starsUpdated Oct 2026

A fun Business Simulator game that uses ai to run a business

HTML 0 starsUpdated Oct 2026

AuraCast Weather — AI-narrated, on-device weather app for Android (Kotlin/Compose). Live radar, Gemma 4 weather podcast, no account needed.

Kotlin 0 starsUpdated Oct 2026

An online Journaling Platform that Leverages AI

JavaScript 0 starsUpdated Oct 2026

A self hosted family tracking app similar to life360

TypeScript 0 starsUpdated Oct 2026

Worldwide Local Public Safety & Incident Awareness App with Wear OS Companion

Kotlin 0 starsUpdated Oct 2026

Privacy-First Autonomous On-Device AI Phone-Calling Android Agent

Kotlin 0 starsUpdated Oct 2026

Shards of Eldoria – A fantasy turn-based RPG built with React Native + Expo

TypeScript 0 starsUpdated Oct 2026

DeskThing apps for the Spotify CarThing — gas prices, calendar, bus arrivals, traffic, and local news

TypeScript 0 starsUpdated Oct 2026

Free CruiseSignal-style cruise fare price-drop tracker for Android

Kotlin 0 starsUpdated Oct 2026

Simple python flask ai call bot. Users can call an extension on your voip and interact with your bot via talk to text service and ollama

Python 0 starsUpdated Oct 2026

path

A bible study app for android with (self hosted) AI summaries

Kotlin 0 starsUpdated Oct 2026

A simple script to automate the process of reaching out to your wedding guests for their address using a CSV upload and Facebook Messenger

Python 0 starsUpdated Oct 2026

Flask app that monitors Discord channels and generates AI summaries using Ollama

Python 0 starsUpdated Oct 2026

Know who's at your door — instantly, privately, with no monthly fees. Self-hosted smart doorbell with live view, person and face alerts, and a companion phone a…

Python 0 starsUpdated Oct 2026

WarmWord — an on-device AI mental health companion (Android, Compose, Gemma)

Kotlin 0 starsUpdated Aug 2026

Peer-powered understanding engine – a unique PWA where you learn by teaching AI students

JavaScript 0 starsUpdated Mar 2026

A simple python based chess game that uses ollama models to play an opponent

Python 0 starsUpdated Nov 2025

This is your new best friend!

Python 0 starsUpdated Aug 2025

The second version of my AI Call Bot for Voip Systems to Awnser calls and chat with an AI

Python 0 starsUpdated Aug 2025

A Python Flask-based web application that mimics the functionality of Character.AI, enabling engaging, interactive conversations with AI-driven characters. This…

HTML 0 starsUpdated Apr 2025