Comparison

iCalendar vs goASTAC

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

Head to head
About

iCalendar

This app helps you manage your busy schedule with a user-friendly interface. Easily track daily, weekly, monthly, and yearly views, and color-code your events for better organization. It syncs with popular accounts and offers productivity tools for efficient event management.

Highlights
  • Daily, weekly, monthly, yearly views
  • Customizable event color-coding
  • Syncs with iCloud, Google, Exchange, Outlook, Yahoo!
  • Task manager with iOS Reminders sync
  • Drag and drop event rescheduling
  • Custom repeating events
  • Time zone support
Features
Currently charting
Read full description

** A MUST-HAVE CALENDAR APP FOR EVERY IPHONE, IPAD, AND IPOD **   iCalendar is the ultimate calendar for your iPhone, iPad and iPod Touch focusing on your productivity. It’s seamless, highly usable interface allows you to enter events quickly and helps you keep track of your busy schedule. It integrates with your iCloud, Google, Exchange, Outlook, or Yahoo! account to provide you with the most convenient calendaring experience.    EASILY TRACK YOUR SCHEDULE - View your daily, weekly, monthly, and yearly schedule. - Custom color-code your events. Use predefined colors, or make up your own colors. - iCalendar implements quickest way on the market to navigate between dates  - Fast and powerful search: Search events by title, location, and notes.    NEW IN VERSION 4.0 - Task Manager: Manage your tasks within your calendar in a fun and easy manner and sync with iOS Reminders. Available as in-app purchase for USD 0.99.   FULL OF PRODUCTIVITY TOOLS - Drag and drop an event to update its timing.  - Copy and paste events. - Create custom repeating events (e.g. repeat on the third Friday every month, and many more).  - Add custom alerts/reminders for events and snooze alerts - Access your event details quickly by tapping on the event.  - Customize the visible time period (e.g. from 9:00 AM – 5:00 PM) to help you focus on most important events.    EVEN MORE - Time Zone Support: View and create your events in your preferred time zone and never get confused when you travel.  - Complete print functionality. Print daily, weekly, monthly, and yearly views.  - Export any view (day, week, month, year) as a PDF file.  - Use built-in maps to set the location of your events.  - Dial into a conference call with one touch right from iCalendar. Add phone numbers from your contacts to events with the ability to use pause and wait, which is ideal for conference calls.  - Set location of an event as the address or phone number of one of your contacts.  - Access all your events directly from the Month view - no need to go to each individual day to review full list of events.  - Use the app icon badge to indicate either the number of upcoming events or the day of the month.  - Google Calendar sync: sync all of your calendars, create and edit Google Calendar events, and use Google Calendar custom reminders (SMS, email and/or alert). - Add, edit and delete calendars right from iCalendar.  - Support of portrait and landscape to match your orientation preference.  - iCalendar is a universal app. Download once and use across all your devices.  - For more details: http://www.symfonies.com/icalendar/   iCalendar offers access to interesting calendars from Calendar Store as an optional in-app purchase.  You may subscribe to your holidays calendar (national/religious) or subscribe to interesting calendars (e.g. local/global sports events, stocks, weather, and many others).   With an optional in-app purchase yearly subscription, you get full and ongoing access to the Calendar Store including (live) updates in your calendar. A subscription always starts with a one-month free trial, so you can try before you buy. One year subscriptions for the Calendar Store costs $1.99. Payment will be charged to your iTunes Account at confirmation of purchase and after the 1 month free trial. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current 1 year period. You can turn off auto-renew at any time from your iTunes account settings. Cancellation of the current active subscription period is not allowed.   Our terms of service and privacy policy are found at http://www.symfonies.com/terms-of-service/ and http://www.symfonies.com/privacy-policy/ respectively.   If you have a question, need help or would like to request a feature, please do not hesitate to contact us. We respond to EVERY email we receive: support@symfonies.com

About

goASTAC

Manage your home network with this app. Assign device priority, implement parental controls, and create guest networks. Monitor network usage, conduct speed tests, and customize your SSID for complete control.

Highlights
  • Assign device priority
  • Implement parental controls
  • Create guest networks
  • View network usage
  • Perform speed tests
  • Manage SSID
Features
Read full description

Control your smart home experience with goASTAC. Manage your network by assigning devices priority, implementing parental controls, and creating your own guest networks. View network usage, perform speed tests, and manage your SSID for total control.

Screenshots

iCalendar1 screens
goASTAC4 screens

Verdict

The call

The clearest difference is price: goASTAC at Free against iCalendar's $2.99. goASTAC also leads on in-app purchases (none vs 10) and rating (5.0 vs 4.7). iCalendar's advantage is ratings volume (5.3K vs 2) and chart position (#60 vs unranked). On update cadence, ads, device support and iOS requirement 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

goASTAC is free to download; iCalendar costs $2.99 up front. iCalendar sells 10 in-app purchases, starting at $1.99 per year. goASTAC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

goASTAC holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: iCalendar has 5.3K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

Scorecard6 real differences · 5 level
iCalendar versus goASTAC: the parameters behind the verdict, then further details
ParameteriCalendargoASTAC
Price$2.99Free — better
Rating4.7 (5.3K ratings)5.0 (2 ratings) — better
Positive reviews72.3% of reviews—
Number of ratings5.3K — better2
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#60 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size37 MB43 MB
Age rating4+4+
DeveloperSymfonies, Inc.ARCTIC SLOPE TELEPHONE ASSOCIATION COOPERATIVE, INC.

Customer experience

iCalendar

All ratings5,339 ratings
Positive93.6%
Neutral2.9%
Negative3.5%
Written reviews390 reviews
Positive72.3%
Neutral8.5%
Negative19.2%

goASTAC

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

iCalendar

Reported bugs

4 issues
  • Events disappearing or not syncing properly
  • Inability to edit or update recurring events
  • Incorrect time and location information
  • Crashes or freezes when performing certain actions

Requested features

5 requests
  • Add ability to attach files to events
  • Improve widget functionality and visibility
  • Introduce family/group calendar sharing
  • Expand color palette and theming options
  • Add yearly view and better month-to-month navigation

goASTAC

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

iCalendar

Subscriptions1
  • Calendar Store1 Month trial$1.991 Year
One-time9
  • Religious holidays$0.99
  • Week Numbers$0.99
  • Moon Phases calendar$0.99
Show 6 more
  • Holidays United States$0.99
  • Calendars - Pro Football USA 2014-2015 edition$0.99
  • Calendars - Pro Baseball USA 2015 edition$0.99
  • iOS Reminders$0.99
  • Calendars - Pro American Football Men United States 2015-2016 edition$0.99
  • Weather calendars$1.99
None

goASTAC

No in-app purchases

Questions

Is iCalendar free?
iCalendar costs $2.99, and also offers in-app purchases.
Is goASTAC free?
goASTAC is free to download, with no in-app purchases.
Which has better reviews, iCalendar or goASTAC?
goASTAC is rated higher. iCalendar averages 4.7 out of 5 from 5.3K ratings, while goASTAC averages 5.0 from 2 ratings.
Do iCalendar or goASTAC have ads?
Neither iCalendar nor goASTAC shows ads.
Which is updated more often, iCalendar or goASTAC?
iCalendar ships an update every 3 months, and goASTAC every 3 months. Most recently, iCalendar was updated on September 25, 2026 and goASTAC on September 18, 2026.

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