We build apps and games.

43SJ LLC is an independent software company. We design, build and publish mobile apps and games for Android and iPhone.

Our apps

ClearReceipt

Scan a receipt and the app reads the store, date, tax and total on your phone. Export to CSV or PDF, and sync across your phones when you sign in.

clearreceipt.app

Milevaro

Simple GPS mileage tracking. Start a trip, mark it Business or Personal, and export a CSV or PDF mileage log. Trips stay on your phone unless you turn on cloud backup.

milevaro.com

Rentivox

Rent tracking for small landlords. Match rent deposits to leases, text reminders to tenants who opted in, and keep expense receipts ready for Schedule E.

rentivox.com

Games

We are building games for mobile. Check back here for releases.

What we do

App development

Useful, fast, well-made mobile apps for Android and iPhone, from idea to store release and updates.

Game development

Casual and mid-core mobile games, designed for short sessions and smooth play on everyday phones.

Privacy first

We collect only the data an app needs to work, say what we collect in plain language, and let people delete their account and data from inside the app.

About 43SJ LLC

43SJ LLC is a limited liability company based in the United States. We make software that is simple to use, respects people's data, and keeps working. Questions, feedback or business enquiries are welcome at support@43sj.us.