Comparison

Google Calendar vs Behavior Observation

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

Head to head
About

Google Calendar

This official app helps you manage your schedule and stay organized. It automatically adds events from Gmail, syncs across devices, and allows for shared calendars. You can also create tasks, customize views, and integrate with Google Meet for collaboration.

Highlights
  • Automatic event import from Gmail
  • Cross-device synchronization
  • Shared calendars for collaboration
  • Task management alongside events
  • Customizable views and themes
  • Google Meet integration
Features
Read full description

The official Google Calendar app helps you stay organized and plan your day with easy event creation, multiple calendars, customizable views, widgets, and tasks. With Google Calendar, you can: • Get events automatically added to your Calendar from Gmail, including flight, hotel, concert, and restaurant reservations. • Go from using Calendar on your iPhone, iPad, or Apple Watch to your computer without missing a beat when you’re logged into the same Google account. • Consolidate and view Google Calendar events side-by-side with other calendars on your device, including Exchange and iCloud. • Keep family, friends, and colleagues in the loop with shared calendars, so they can view, add, or modify events. • Quickly switch between month, week, and day views. • Stay on top of to-dos by creating and managing tasks alongside your events in Calendar. • Personalize your Google Calendar with light or dark mode or by color-coding your events • Always know what's next while on the go with Google Calendar on Apple Watch by customizing your watch face with Calendar complications or adding widgets. Google Calendar is part of Google Workspace, allowing you and your team to easily connect, create, and collaborate across all your favorite Google tools. You can: • Collaborate in a hybrid work environment by adding a Google Meet video call to an Calendar event • Get access to professional booking pages to easily book clients and customers*. • Schedule meetings with teammates by checking their availability or layering their calendars in a single view • Add your working location to your calendar to make it easier for your teammates to schedule meetings with you*. • Keep everyone on track for a meeting by attaching meeting notes, pre-read materials, and other documents directly to a calendar event. • Use Google Calendar with confidence knowing it’s supported by Google’s enterprise-level privacy, user safety and data security. * Requires a Google Workspace or Google One AI Premium subscription

About

Behavior Observation

This tool helps educators and clinicians systematically track student behavior in school settings. It allows for detailed data capture and generates professional reports to inform interventions and assessments. The app is designed for privacy and offline use, with no subscriptions or ads.

Highlights
  • Momentary time sampling and partial-interval recording
  • Customizable session duration and intervals
  • Track engaged and non-engaged behaviors
  • Built-in peer comparison intervals
  • Teacher-Directed Instruction (TDI) tracking
  • Export PDF, CSV, and HTML reports
  • Offline functionality
Features
Read full description

Transform classroom behavior tracking with BOSS — the professional observation tool trusted by educators and clinicians nationwide. Capture systematic behavior data in minutes and turn it into clean, defensible reports that drive meaningful interventions. Built for school psychologists, ABA professionals, and special education teams conducting functional behavior assessments (FBA), IEP support, and progress monitoring. SYSTEMATIC OBSERVATION, DONE RIGHT • Momentary time sampling and partial-interval recording, the way the BOSS protocol intends • Customizable session duration and observation intervals • Track Engaged (Active / Passive) and Non-Engaged (Motor / Verbal / Passive) behaviors • Built-in peer comparison intervals for classroom-referenced context • Teacher-Directed Instruction (TDI) tracking — configurable per observation • Virtual observation mode: record camera and microphone status in remote sessions • Haptic interval cues keep your eyes on the student, not on a timer CLINICAL-GRADE CHARTS AND REPORTS — REDESIGNED • Every chart now shows value labels on every bar: read exact percentages at a glance • Color-vision-deficiency-safe palette that stays legible in print and on screen • Export polished PDF reports, spreadsheet-ready CSV, and shareable HTML • Charts render identically in the app and in your exports — what you see is what you file PRIVATE BY DESIGN • Works fully offline — sessions, data, and reports live on your device • Nothing is uploaded to any server; data leaves the app only when you choose to export it • Dark mode support throughout ONE-TIME PURCHASE • No subscriptions, no accounts, no ads

Screenshots

Google Calendar4 screens
Behavior Observation4 screens

Verdict

The call

The clearest difference is price: Google Calendar at Free against Behavior Observation's $59.99. Google Calendar also leads on update cadence (weekly vs every 2 months) and ratings volume (133K vs 89). Behavior Observation's advantage is in-app purchases (none vs 32) and iOS requirement (16.4 vs 18.0). On rating, review sentiment, ads and device support there is nothing between them.

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

Google Calendar is free to download; Behavior Observation costs $59.99 up front. Google Calendar sells 22 in-app purchases, starting at $0.89 per month. Behavior Observation asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Google Calendar against 4.6 for Behavior Observation. That said, the two scores are not equally well evidenced: Google Calendar has 133K ratings behind it against 89, so its average is the more settled of the two. Written reviews are what separate them: 38% of Google Calendar's written reviews are positive against 44% of Behavior Observation's.

UpkeepUpdate frequency

Google Calendar ships an update weekly, Behavior Observation every 2 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard7 real differences · 4 level
Google Calendar versus Behavior Observation: the parameters behind the verdict, then further details
ParameterGoogle CalendarBehavior Observation
PriceFree — better$59.99
Rating4.5 (133K ratings)4.6 (89 ratings) — better
Positive reviews37.5% of reviews44.4% of reviews — better
Number of ratings133K — better89
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#20 — better#163
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.4 — better
Further details — not scored
Size290 MB57 MB
Age rating4+4+
DeveloperGoogle LLCAllen Eubank

Customer experience

Google Calendar

All ratings132,482 ratings
Positive89.0%
Neutral3.6%
Negative7.4%
Written reviews1,820 reviews
Positive37.5%
Neutral16.5%
Negative46.0%

Behavior Observation

All ratings89 ratings
Positive89.9%
Neutral1.1%
Negative9.0%
Written reviews9 reviews
Positive44.4%
Neutral0.0%
Negative55.6%

Bugs and requests

Google Calendar

Reported bugs

3 issues
  • Events not syncing properly between app and web versions
  • Incorrect time zone changes for events
  • New events automatically added to wrong calendar

Requested features

5 requests
  • Allow recurring events on specific days (e.g. 2nd Wednesday of the month)
  • Add ability to set reminders for event end times
  • Integrate with more email/calendar providers beyond Gmail
  • Provide more customization options for event colors and icons
  • Display the current date on the app icon

Behavior Observation

Not enough reviews yet to summarise bugs or requests.

In-app purchases

22 purchases

Google Calendar

Subscriptions22
  • 30 GB1 Month trial$0.891 Month
  • 30 GB$0.891 Month
  • 100 GB2 variants$1.991 Month
Show 19 more
  • 100 GB1 Month trial2 variants$1.991 Month
  • 200 GB1 Month trial2 variants$2.991 Month
  • 200 GB2 variants$2.991 Month
  • Google AI Plus (400 GB)$4.991 Month
  • Google AI Plus (2 TB)1 Month trial2 variants$9.991 Month
  • Google AI Plus (2 TB)2 variants$9.991 Month
  • Google AI Pro (5 TB)2 variants$19.991 Month
  • 100 GB1 Month trial$19.991 Year
  • 100 GB$19.991 Year
  • 100 GB1 Year trial$19.991 Year
  • Google One AI Premium (2 TB)$19.991 Month
  • 5 TB$24.991 Month
  • 200 GB1 Year trial$29.991 Year
  • 200 GB$29.991 Year
  • 20 TB$99.991 Month
  • 2 TB1 Month trial$99.991 Year
  • 2 TB$99.991 Year
  • Google AI Ultra (30 TB)$249.991 Month
  • 5 TB2 variants$249.991 Year
None

Behavior Observation

No in-app purchases

Questions

Is Google Calendar free?
Google Calendar is free to download, with in-app purchases available.
Is Behavior Observation free?
Behavior Observation costs $59.99, with no in-app purchases.
Which has better reviews, Google Calendar or Behavior Observation?
Behavior Observation is rated higher. Google Calendar averages 4.5 out of 5 from 133K ratings, while Behavior Observation averages 4.6 from 89 ratings.
Do Google Calendar or Behavior Observation have ads?
Neither Google Calendar nor Behavior Observation shows ads.
Which is updated more often, Google Calendar or Behavior Observation?
Google Calendar ships an update weekly, and Behavior Observation every 2 months. Most recently, Google Calendar was updated on October 30, 2026 and Behavior Observation on October 29, 2026.
Which is more popular, Google Calendar or Behavior Observation?
Google Calendar currently peaks at #20 in the App Store charts, and Behavior Observation at #163. Chart position reflects recent download velocity rather than total install base.

Other comparisons