Mobile apps, with AI at the core.
73lines is a small product studio building AI-native mobile apps. Receipt scanning, natural-language entry, smart reconciliation — AI does the grunt work, so the people using our apps don't have to.
Products we're proud of.
Split Circle
Keep your circle. Let the AI split the bills.
The AI-native expense splitter that reads receipts, understands plain English, and keeps every balance correct — free, forever.
We ship slowly and deliberately. Check back — or reach out if you want an early look.
AI, done
with taste.
AI can now do real work on a phone — OCR receipts, parse plain English, spot patterns, reconcile messy data. We're building apps where all of that stays quiet in the background and the experience just feels easy.
No sparkle buttons. No chat windows bolted on. AI only where it makes you faster — then we get out of the way.
Inference runs on your phone wherever it's feasible. Your data doesn't leave unless it has to.
We tell you what each AI feature does, what it sends, and what it sees. Always. Export whenever you want.
We maintain what we ship. Offline-first. Fast on cheap phones. No dark patterns. No ads.
Have an idea? We'd love to hear it.
Partnerships, feedback, or just saying hi — our inbox is open.
Get in touch