Every app I've built as Hartmann Studios, in one place: 42 live on Google Play and 9 more on the way. Tap any card to grab it.
On-device AI
Apps whose AI features run on the phone itself.
LiveCaptionN – Live Captions
Free live captions and translation that float over any app, video or call. Offline on the phone, or on your own Whisper server.
Shape & Shade
Face Shape
Find your face shape and your best colors in seconds. Nothing is uploaded.
ScamRadar
AI Scam Detector
On-device AI catches scams in texts, voicemails & notifications. Free.
Dosely
GLP-1 & Dose Tracker
Private GLP-1 injection tracker: 6-site rotation, medication level curves, pen stock, weight, Wear OS sync and an offline AI coach. Data stays on the phone.
AI Social
On-Device AI Feed
AI-generated social feed — offline, no account, no strangers. Just for you.
CaptionBurn
Video Captions
On-device auto-captions burned into video with built-in translation.
Dreamloom
AI Dream Journal
Private dream journal: record by voice or text, on-device AI reads the meaning.
Morrowkept
Audio Journal
Private audio journal with on-device transcripts, local AI, and Wear OS.
NutriSnap
AI Calorie Tracker
Snap meals for instant calories & macros. 100% offline AI, private.
Provision
AI Meal Planner
On-device AI meal plans, real grocery prices, and a budget tracker.
TextPilot AI
Smart Messaging
Clean SMS app with AI smart replies & web browser access to texts.
WarmWord
AI Mental Health
Private on-device AI companion & journal. Available in your language.
For homelabbers and makers
Self-hosted servers, 3D printers and local AI.
OctoPulse
OctoPrint Companion
Control your OctoPrint 3D printer from your phone. Monitor & print on Wi-Fi.
Ollama AI Chat
Ollama AI chat client — remote server or fully offline on-device models.
Grocy Fridge Scanner
Snap your fridge. On-device AI updates your Grocy stock in seconds.
PixelDream
Offline AI Images
Private, offline AI image generator. Your prompts and pictures never leave.
MeshTalk
Bluetooth Mesh Chat
Chat, talk & AI over Bluetooth mesh. No internet, no accounts, offline.
Aria
On-Device Assistant
Private voice AI assistant — offline, on-device, no cloud. Optional web search.
Pocket Assistant
AI Organizer
Local AI organizer — bills, notes, chat, tasks & reminders on-device.
Travel and on the road
TrailSage
AI Road Trip Guide
Offline GPS audio tour guide with on-device AI storytelling.
SkyPulse
Live Flight Tracker
Track live flights overhead — aircraft, airports & smart alerts.
CrowdTransit
Bus & Train
Free live transit stops, schedules & reviews. Track buses & trains nationwide.
CruiseWatch
Fare Drop Alerts
Track cruises you've booked. Get alerted and claim refunds when fares drop.
CruiseLoom
Plan cruise days, ports, weather and nearby party chat—even offline.
AuraCast Weather
Your weather, narrated — on-device AI podcast + live radar. No account needed.
DriveVault
Dashcam
Privacy-first dashcam with GPS overlays, dual-camera & background recording.
Everyday tools
QR Scanner
Code Reader
Lightning-fast QR & barcode scanner. Scan, copy, share & history.
Flashlight
Torch + SOS
Fast torch, screen light, SOS, shake toggle, widget & quick settings.
Sticky Notes
Quick Widget
Simple sticky note widget for your home screen. Quick notes & lists.
File Manager
Browse & Sort
Free file manager — browse, organize, copy & manage all your files.
Photobooth
Event Camera
Turn any Android device into a fun event photo booth with prints.
Owefolk
Shared tabs, clear friendships. Split expenses and settle up in your language.
TradeCoach AI – Stock Coach
AI-powered stock trading coach with lessons, portfolio tracking & market data.
TipsyBuddy
Drink & BAC Track
Track drinks, estimate BAC & sober time, share live location & get home safe.
Games and fun
Gizmo Gunners
Robot Shooter
Voiced story, heroes with powers, AI squad mates. A bright 3D robot shooter.
Pawdub
Funny Pet Translator
Your pet gets funny movie subtitles in 59 languages. Real bark & meow detection.
Knightfall
AI Chess Coach
Play chess against Stockfish AI with Gemma 4 coaching, online, or web.
Pixel Fish Tank
Virtual Pet
Cozy virtual pet game — feed, clean & customize your pixel fish.
Arcane Dark
AI Dungeon Master on your phone. Solo offline & private, or co-op with friends.
Amoura – AI Girlfriend App
AI girlfriend & AI boyfriend chat companion – private, on-device, always yours
Faith
Path – Daily Bible Study
Build daily Bible study habits with gentle streaks.
ScriptureSearch
ScriptureSearch Find and compare verses from different translations of the Bible
Coming soon to Google Play
Finished and waiting on Google’s review. These turn into download buttons on their own the day they go live.
Daycare Dons
Diaper Empire
Toy water pistols, nap-time capers and a daycare underground. Rise to BABY BOSS!
Wild Lens
Jungle Rescue
Photograph jungle wildlife, expose a poacher ring and free animals with Pip.
Nightsay
Snore & Sleep Talk
Snore & sleep talk recorder with clips, a Sleep Score and insights on your phone
EventCrew
Find Your Group
Keep your group together at concerts and festivals. Friends join from a link.
ADHD Focus Companion
One task, one timer, no shame. A focus companion for ADHD adults with kind nudges and a lock-screen timer.
EV Charge Tracker
Charging cost and efficiency done right: home vs public split, mi/kWh, battery health, service reminders.
Pantry Tracker
Scan it, date it, never waste it. Barcode entry, expiry alerts and a shopping list that restocks the pantry.
Gig Mileage Tracker
Automatic mileage for rideshare and delivery drivers. No trip caps, one-tap classify, IRS-ready CSV/PDF.
Symptom Diary
One-tap migraine and IBS diary that correlates episodes with sleep and steps from Health Connect.