Projects — Mohit Kumar

Maffs

Live

Scientific Calculator with AI, Graphs & 6 Themes

A calculator app that goes beyond the basics — featuring a hand-written recursive descent parser, AI-powered Nerd Mode for plain-English math, interactive graph plotting, unit conversion, and a theme system where every theme has its own personality.

Highlights

Recursive descent expression parser — no eval()

AI-powered Nerd Mode with step-by-step breakdowns

Plot up to 6 functions with pinch-to-zoom and trace

8-category unit converter with inline expression support

6 themes with unique typography, radii, and vibe

3 subscription tiers via RevenueCat

Stack

React NativeExpoTypeScriptRevenueCatZustandMMKVClaude AI

App Store maffs.skyhit.app Read the story Under the hood

Petal

Live

Track Subscriptions, Save Money

A subscription tracker that helps you stay on top of recurring payments. Multi-currency support, social subscription sharing, trial management, local-first sync queues, and a design system that makes managing money feel good.

Highlights

Multi-currency with live exchange rates

Social subscription sharing between users

Smart trial and renewal reminders

Local-first architecture with sync queues

Spending analytics and category breakdowns

Beautiful UI with smooth Reanimated transitions

Stack

React NativeExpoZustandReanimatedMMKVSupabase

App Store petal.skyhit.app Read the story