Comparison

Calendar Busy Sync vs CalendarRx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calendar Busy Sync

Features
Read full description

Connect separate work, client, and personal calendars and mirror only busy time across the calendars you choose. Calendar Busy Sync creates private Busy holds on your other calendars for accepted commitments so you can avoid double-booking without exposing event details.

About

CalendarRx

This app offers a flexible calendar for managing work schedules, personal plans, routines, and lifestyle events. It provides powerful tracking tools for habits, health, and shifts, with privacy-focused sharing options. Designed for real life, it simplifies organization and connection.

Highlights
  • Smart calendar management
  • Advanced personal tracking
  • Powerful stats and insights
  • Privacy-first calendar sharing
  • Designed for real-life schedules
  • Customizable notifications
Features
Read full description

CalendarRx is a modern, flexible calendar designed for real life, not just work. Track work schedules, personal plans, routines, and lifestyle events all in one place. Whether you're coordinating shifts with friends, tracking recurring habits, or organizing your daily life, CalendarRx gives you powerful tools without unnecessary complexity. ---KEY FEATURES--- Smart Calendar Management • Create and manage Work, Personal, Period, Poop, and custom event types • Add events quickly with intuitive date and time pickers • Bulk add work shifts in seconds • Visual indicators for day vs. night shifts • Quickly jump back to today from anywhere in your calendar Advanced Personal Tracking • Track routines, symptoms, habits, and recurring lifestyle events • Period tracking includes flow, mood, symptoms, and “symptoms only” days • Optional Poop tracking with detailed analytics and insights • Dedicated Stats dashboard with personalized trends and summaries Powerful Stats & Insights • View work hour summaries and shift trends • Track averages, streaks, and recent activity • Period cycle insights and monthly summaries • Personalized statistics based on enabled calendar types Calendar Sharing (Privacy First) • Share specific calendars with friends — only what you choose • Overlay your own calendar on shared calendars to quickly compare schedules and find overlapping free time • Notes always stay private • Accept invites and optionally share back • Clean, mobile-first shared calendar experience Designed for Real Life • Built for shift workers, busy schedules, and non-traditional routines • Dark mode support across the entire app • Fast, lightweight, and easy to use • Flexible enough for work, school, health, habits, and daily life Notifications That Actually Matter • Share invites and updates • Optional daily motivational quotes • Monthly cycle insights (if enabled) • Smart, permission-based updates from shared calendars Built for Simplicity No clutter. No unnecessary complexity. Just a flexible calendar that adapts to your life and makes it easier to stay connected with the people who matter most.

Screenshots

Calendar Busy Sync3 screens
CalendarRx3 screens

Verdict

The call

Calendar Busy Sync and CalendarRx are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Calendar Busy Sync versus CalendarRx: the parameters behind the verdict, then further details
ParameterCalendar Busy SyncCalendarRx
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size10 MB187 MB
Age rating4+4+
DeveloperSous Chef Studio, Inc.Conner Reznicek

In-app purchases

None

Calendar Busy Sync

No in-app purchases

None

CalendarRx

No in-app purchases

Questions

Is Calendar Busy Sync free?
Calendar Busy Sync is free to download, with no in-app purchases.
Is CalendarRx free?
CalendarRx is free to download, with no in-app purchases.
Do Calendar Busy Sync or CalendarRx have ads?
Neither Calendar Busy Sync nor CalendarRx shows ads.

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