Sky Stack
Vertical tower climber with combos, speed that ramps up every level, collectible coins, character outfits and a global Top-10 leaderboard on Firebase.
Apps · Games · Software · Websites
We build it. We test it. We ship it to Google Play.
H&G Productions turns your idea into a working Android app, mobile game, custom software or website, and stays with you until real users are downloading it. Design, code, testing, store listing and launch, handled by one team.
5games live on Google Play
10games built end to end
3with online multiplayer
6+custom software & AI tools
Portfolio · Live on Google Play
Five games, live and downloadable today
Every one of these went through Google's closed testing, passed production review and shipped with ads, privacy consent and in-app reviews built in. Tap through and install them.
Gem Breaker: Match 3 Puzzle
Match-3 puzzler with live online co-op: up to 4 friends share one board in real time through 6-digit room codes.
Color Sort Master
Glossy water-sort puzzle with hundreds of levels, boosters and rewarded ads. Calm, polished and built for long sessions.
JumpyBird
One-tap arcade flyer with unlockable birds, new worlds and record-chasing. Built in Jetpack Compose.
CityWatch: Dispatch Simulator
Run a city's emergency dispatch: route police, fire and ambulance units to live incidents, level up and expand your fleet.
In testing and in development
More games moving through the same pipeline right now.
Void Rider: Space Racer
3D space hover racer with online "Play with a Friend" races over Firebase.
Path Defense
Tower defense with 10 elemental towers, 30 levels and boss waves.
Island Dash: Jungle Adventure
Retro pixel side-scroller with skateboards, thrown rocks and jungle enemies.
BlockRealm
Blocky online hangout world built in Godot 4. Players see each other live, join rooms by code, run obstacle courses and build on their own plot in the Build District.
BASE · HARVEST · CONQUER
Real-time strategy game
Classic RTS for Android: build a base, harvest crystals, train tanks and infantry and take on a computer opponent across five biome maps.
Portfolio · Software & AI
Software that does real work
Beyond games, we build trading engines, prediction models, desktop tools, browser extensions and AI assistants that plug into the systems a business already runs.
Crypto trading bot
QuantumTradeAI
A desktop trading engine connected to Binance that scans the market, scores entries and manages positions on its own. Runs in paper mode for safe testing before any real money is involved.
- Multi-coin portfolio mode covering 50 to 100 coins
- "Analog Brain" that matches live charts against historical fingerprints
- Adaptive position sizing, volatility-based cooldowns and a hard block on falling-knife entries
Sports prediction engine
Winner2 BRAIN
A soccer match prediction engine fed by live league data. It rates every fixture, outputs home / draw / away probabilities and flags the high-confidence picks.
5leagues covered
~55%1X2 accuracy overall
77%on high-confidence picks
Also spun off into a basketball version.
Web platform + extension
Nechishut
Next.js platform with a Chrome, Edge and Firefox extension that helps people understand their case files in Israel's enforcement system. Shows the facts clearly and routes decisions to a lawyer.
AI customer support
WhatsApp support assistant
AI auto-assistant for a company's WhatsApp support channel: rules engine, curated playbooks, answers drawn from past resolved chats, and a clean handoff to a human agent.
Computer vision
COSMOS
Desktop app that reads text in live video feeds with OCR, alerts on keywords and finds matching photos with image-similarity scoring.
Telecom
Browser softphone
A web-based phone client for a cloud telephony provider, so agents can place and take calls straight from the browser over SIP.
Reporting tool
Call-records reporter
Desktop tool that pulls call records from a telephony platform, resolves carriers and origin countries, and exports clean reports in one click.
Android utility
AutoTap Pro
Android automation app with a floating overlay: set tap and swipe points, counts and speed, then let it run.
What we build for you
Bring the idea. We handle the rest.
Android apps
Business apps, tools and utilities, built native in Kotlin and ready for the Play Store.
- Booking, ordering and loyalty apps
- Internal tools for your team
- Login, payments, notifications, cloud sync
Mobile games
From casual puzzlers to online multiplayer. Gameplay, art direction, levels, ads and leaderboards.
- Puzzle, arcade, racing, strategy
- Online rooms and co-op with Firebase
- Ad monetization that respects players
Custom software & AI
Desktop software, bots and automations that save hours every week or find an edge in your data.
- Trading and prediction engines
- AI assistants and chat automation
- API integrations, dashboards, reporting
Websites
Fast, modern websites that bring in customers, on their own or launched together with your app.
- Business sites and landing pages
- Websites for your app or game, with privacy policy pages
- Mobile-first, multi-language, contact forms that work
How it works
From the first call to a live app
You are not handed a zip file and left alone. We stay with the project through every stage, and you see progress on your own phone as we go.
Discovery call
We talk through the idea, who it is for and how it makes money. You get a clear scope, timeline and price before anything starts.
written planDesign
Screens, game art, icons and the flow of the app, shaped with you until it looks and feels right.
mockups & artBuild
We write the app and send you regular test builds to install and try. Your feedback goes straight into the next build.
working buildsTesting
Real testers, real phones. We run Google's closed testing for you and fix what they find.
stable releaseLaunch
Store listing, graphics, privacy policy, Data safety, and the production release on Google Play.
live listingAfter launch
Updates, new features, ad tuning, reviews and promo videos. We stay on as your tech partner.
ongoing support
Google Play services
Already have an app? We'll get it on the store.
Google Play has a lot of rules, and a rejected release can cost weeks. We have taken our own games through every step, so we can take yours through too, as a standalone service or as part of a build.
New personal developer accounts must run a closed test with at least 12 testers for 14 days before they can apply for production. We plan and manage that whole process.
- ✓Developer account & app setupAccount guidance, app creation, signing keys, package name
- ✓Closed testing & production accessTester lists,
12 testers · 14 days, the production application - ✓Store listing that convertsIcon, feature graphic, screenshots, short and full description
- ✓Policy & compliancePrivacy policy, Data safety form, content rating, target audience
- ✓Ads & monetizationAdMob setup, GDPR consent for UK and EU,
app-ads.txtverification - ✓Ratings & reviewsIn-app review prompt shown at the right moment
- ✓Releases & updatesVersion codes, release notes, staged rollouts, managed publishing
- ✓Promo videosStore trailer and short-form ads for Instagram and YouTube
Tools we build with
KotlinJavaJetpack ComposeGodot 4FirebaseAdMobGoogle Play ConsolePythonPyQt5Next.jsBrowser extensionsHTML / CSS / JSREST APIsAI / LLMs
Start a project
Tell us what you want to build
An app for your business, a game idea you keep thinking about, or software that saves you time. Send a few lines and we'll reply with next steps.
jerohanan@gmail.com
WhatsApp+972 52-655-2657