Simple Subnet Calc vs ClockWork

Simple Subnet Calculator — Fast, Clean, and Built for Pros Simple Subnet Calculator is your go-to tool for quick and accurate subnetting on iPhone. Whether you’re working with IPv4 or IPv6, this app gives you the essentials in a clean and intuitive interface—no ads, no clutter, no distractions. Designed with network engineers, sysadmins, IT professionals, and students in mind, it delivers what you need, when you need it—on the go, in the lab, or on the job.

Alarms that ring only on days you actually work. ClockWork follows the official public holidays and makeup workdays of the country you choose, so your alarm stays silent on days off — no more switching it off by hand. ■ SMART ALARMS · Workday alarm: follows holidays and makeup days automatically · Shift alarm: work X days, rest Y days cycles · Interval alarms: repeat reminders inside a time window (stand up, drink water, eye breaks) · Specific date / rotating weeks / yearly (birthdays) / monthly (rent, bills) · Custom shuffle ringtone pool: import songs you love and play one at random each ring · Ringtone trimming: set exact begin/end times, view an energy strip and use a suggested clip · Snooze length and skip-on-leave days ■ CALENDAR · Gregorian + lunar calendar + 24 solar terms; holidays and makeup days at a glance · This month's workdays / rest days, month and year progress · Check-in projects and records (Pro) ■ WORLD CLOCK · Live time differences and day/night for the cities you follow · Time conversion (free): pick any city as the reference and see the rest ■ COUNTDOWNS · Target date, repeat periods and periodic reminders · Assign to small / medium / large widget groups ■ WIDGETS · Monthly/weekly calendar, world clock, countdown and check-in widgets ■ VERSION BACKUP · Automatic daily snapshots, keep 7 / 15 days · Optional sync to your own iCloud — sign in with the same Apple ID on a new device to restore ■ ABOUT PRO The free version includes alarms, calendar and world clock basics, plus a 30-day Pro trial. Pro unlocks countdowns, check-in, interval alarms, leave-day schedules for the ringing calendar and unlimited random alarm sounds. · Lifetime purchase ¥20 (one-time) Privacy first: your data stays on your device by default; backups are optional and go to your own iCloud. No location or contacts collection, no ads, no third-party analytics SDKs.