monadhabit

MonadHabit is a self-commitment dApp built on Monad. Users choose a habit, stake MON against it, and commit to checking in once every 24 hours. If they complete the full streak, the contract refunds their stake and mints an on-chain NFT medal as proof they followed through. If they miss a check-in window, part of the stake is automatically sent to a penalty wallet they selected in advance, such as a charity, the Monad Foundation, or anywhere painful enough to create real accountability. The core accountability system lives in a Solidity contract that manages escrow, check-in windows, penalties, refunds, and NFT rewards. The frontend is built with Next.js and Supabase Auth, with a GitHub-style heatmap that visualizes streak consistency. Resend handles daily 8 a.m. reminder emails, while Vercel Cron triggers the contract’s fail() function so penalties execute automatically even if the user never opens the app. The blockchain acts as the source of truth. Every check-in is a public transaction visible on testnet.monadscan.com. The biggest problem with habit tracking is that people can always renegotiate with themselves. “I’ll start tomorrow.” “Yesterday still counts.” Traditional habit apps make accountability optional because logs can be edited and reminders can be ignored. MonadHabit removes that flexibility by putting commitment on-chain. There’s no edit button and no way to rewrite the story later. Every check-in is a transaction, and every missed day has a real financial consequence that the user agreed to upfront. It’s less of a habit tracker and more of a commitment contract that uses financial accountability to enforce consistency.