LocalToolbox

Local Toolbox is a privacy-first, fully offline utility app with 150 practical tools for daily life, work, study, and professional use. It combines measurement tools, time tools, converters, text utilities, developer tools, calculators, security tools, engineering helpers, workplace tools, finance record tools, and practical work tools in one clean app. Everything works locally on your device. No login, no internet required, no data collection, no cloud sync, and no background tracking. It is built for people who want fast tools without privacy trade-offs. Key features include: Measurement, timer, date, and unit conversion tools Text tools, JSON, regex, UUID/ULID, JWT decode, URL parser, subnet calculator Everyday helpers like bill split, unit price compare, work hours, and time zone conversion Finance and record tools like compound growth, fixed deposit, recurring investment, goal planning, shopping budget, mortgage comparison, prepayment calculator, rate impact, Savings Tree, and Gift Ledger Practical work tools for machinists, woodworkers, electricians, and truck drivers Whether you are a developer, engineer, office worker, student, driver, contractor, or just someone who wants useful offline tools in one place, Local Toolbox helps you get things done quickly and privately. Feature requests or improvement ideas are welcome. All feedback is regularly reviewed and used to guide future updates: Email: 842797413@qq.com Or leave thoughts in an App Store review Every suggestion is taken seriously.