deverythings
Building apps and services that help everyday life. Focused on BbitbbitBook, Smart Lotto, 3weeks, and My Bankroll.
Featured Projects
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BbitbbitBook
Read, record, and collect — a reading journal app with a passbook and character collection
iOSWeb
SMART LOTTO
Your smart lottery companion — pick numbers with strategy and data
iOSAndroid
3weeks
Build habits in 21 days — the science-backed habit tracker
iOS
My Bankroll
Bankroll management and AI GTO analysis service for poker players
Web
Recent Posts
View All →Dev3weeks Use Cases — Diet, Exercise, Study, and Quitting Bad Habits
2026-07-21How to design effective 21-day challenges in 3weeks for specific goals: weight loss, fitness, learning, quitting smoking, and building a morning routine.
DevBest Habit Tracker Apps 2025 — Streaks, Habitica, Routine, 3weeks Compared
2026-07-18An honest comparison of four habit-tracking apps, written by the developer of one of them. Covers structure, features, price, and who each app suits best.
DevHow to Use the 3weeks App — A Complete Guide from Day 1 to Day 21
2026-07-14A beginner's guide to 3weeks: how to create a challenge, check in daily, track your streak, earn badges, and review your statistics after 21 days.
DevSmart Lotto — Balancing Picks with Odd/Even Ratio and Sum Range
2026-07-13Odd/even balance and sum ranges do not guarantee a win. They help you avoid combinations that feel extreme so the ticket still feels like yours.