Comparison

The Clock by seense vs Availability Sync

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

Head to head
About

The Clock by seense

Manage contacts across time zones, plan meetings efficiently, and view calendars with this highly customizable world clock app. It offers a variety of clock faces, business hour highlights, and break reminders, with widget and Siri shortcut support.

Highlights
  • World clock with customizable faces
  • Meeting planner with business hours
  • iOS Calendar integration
  • Break reminders
  • Widget and Siri Shortcuts
  • Customizable themes
Features
Read full description

After 10 years on the Mac and tens of thousands of happy users, The Clock now on your iPhone/iPad. The Clock • Keep track, easily and efficiently of your contacts in different time zones. • Have a quick view on a Calendar, which can be integrated with the iOS Calendar • Easily setup meetings with the Meeting Planner. • Have a highlight on the Business Hours and Holidays of your subcontractors, customers, ... • Highly customizable. • Be reminded when to Take a Break and relax. • Widget ready for your convenience. • Siri Shortcuts available. • Responsive design to adapt to portrait/landscape view. • HandOff with The Clock on your Mac. The World Clocks • AM/PM or 24Hours. • Analog or Digital Clock view. • Choose among a wide range of complications • Business Hours. • Time offset. • Sunrise/Sunset. • Country. • Time Zone offset (PDT, CDT, UTC…). • Yesterday, Today, Tomorrow. • AM/PM, 24H. • Drag&Drop the world clocks to order them. • Beautiful clock face displaying day and night. • Personalize the world clock time format per cities. • Change the city name. • PDT, CDT, MDT, GMT… and more automatically adapting during daylight saving period. Meeting Planner • Meeting Planner swipe the screen to travel through time. • Business Hours led to check if your contact is in the working hours time frame. • Select a date in the calendar for an accurate Daylight Saving adjustment. • With the iOS Calendar integration into The Clock have a quick look on your schedule • With the Calendar Complication, automatically know if you are busy while planning a meeting. • Export easily your schedule information with the share menu or Drag & Drop (iPad). • Slider automatically round the time to 15/30 min. Calendar • Navigate the months with a tap, or keyboard shortcuts (iPad Pro). • Show/Hide the Calendar. • Toggle week/month view. • Show/Hide the weeks number. • Select your referenced calendar for the week number. (Regional settings, or ISO 8601). • Select a day in Meeting Planner for an accurate Daylight Saving adjustment. • Highlight days off per city. • Follow the iOS setting for Calendar first day of the week or set your own... • Choose to integrate or not with the iOS Calendar. • Have a quick view on your calendar events. • Calendar complication to immediately see what is coming next on your schedule. Accessibility • Voice Over. • Dynamic Type for font size to adapt to your need. • Color blind friendly. • Haptic feedback (for device supporting it). Other • Choose between 4 beautiful themes (White/Dark/Daisy Blue/Deep Dark). • Select clock faces. • Keyboard Shortcuts for most common actions (on iPad Pro with keyboard). • Backup/Restore your settings easily (Local, Dropbox, iCloud). • Enjoy the Take a Break feature, and relax. • And more … • And with a real user manual to go deeper in the discovery of all the features.

About

Availability Sync

Easily share your free time slots for meetings and appointments. This app integrates with your existing calendars and allows for customized sharing messages and professional calendar invites. Streamline your scheduling process and avoid back-and-forth communication.

Highlights
  • Instant availability sharing
  • Calendar integration (iOS, Google, Outlook)
  • Customizable sharing messages
  • Professional calendar invitations
  • Multiple time slot selection
  • Time zone management
Features
Read full description

Availability Sync: Share Your Availability Instantly Transform how you coordinate schedules and share your availability. Whether you're planning meetings, managing appointments, or coordinating with others, share your free time slots in seconds. FEATURES: Smart Sharing - Share available time slots instantly via text or calendar invites - Customize sharing messages for different recipients - Generate professional calendar invitations - Create personalized event titles and descriptions - Share across any messaging platform - Select multiple time slots in one go Calendar Integration - Sync with iOS, Google, and Outlook calendars - View all your calendars in one unified interface - Real-time updates as your schedule changes - Instant conflict detection Availability Management - Select and share multiple time slots at once - Customize work week and weekend schedules - Set preferred meeting durations - Define working hours for different days - Manage time zones effortlessly Time Slot Controls - Choose between 30-minute to 2-hour slots - Select entire days or specific times - Quick bulk selection options - Filter by morning, afternoon, or evening - View calendar conflicts instantly Professional Customization - Personalize event titles and descriptions - Create custom sharing messages - Choose between text or calendar format - Adjust time zone displays for recipients - Flexible date and time formats Perfect for: - Professionals sharing meeting availability - Teams coordinating across time zones - Freelancers managing client appointments - Anyone tired of back-and-forth scheduling emails Additional Features: - Support for light and dark modes - Multiple visual themes - Quick event creation - Privacy-focused design - Regular updates and improvements Download Availability Sync today and transform how you share your availability. No more endless email chains or scheduling confusion - just simple, efficient calendar sharing. Take control of your schedule sharing with Availability Sync.

Screenshots

The Clock by seense4 screens
Availability Sync4 screens

Verdict

The call

The clearest difference is price: Availability Sync at Free against The Clock by seense's $2.99. Availability Sync also leads on update cadence (weekly vs every 8 months) and rating (4.4 vs 4.2). The Clock by seense's advantage is chart position (#188 vs unranked) and ratings volume (20 vs 5). On review sentiment, ads, in-app purchases 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

Availability Sync is free to download; The Clock by seense costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Availability Sync holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 20 and 5 respectively. Written reviews complicate that: 73% of The Clock by seense's written reviews are positive against 67% of Availability Sync's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

The Clock by seense ships an update every 8 months, Availability Sync weekly. The most recent releases landed on September 10, 2026 and June 2, 2026 respectively.

Scorecard6 real differences · 5 level
The Clock by seense versus Availability Sync: the parameters behind the verdict, then further details
ParameterThe Clock by seenseAvailability Sync
Price$2.99Free — better
Rating4.2 (20 ratings)4.4 (5 ratings) — better
Positive reviews73.3% of reviews — better66.7% of reviews
Number of ratings20 — better5
Update frequencyEvery 8 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#188 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.5 — better
Further details — not scored
Size15 MB10 MB
Age rating4+4+
DeveloperFabrice LeyneDavid Fuerst

Customer experience

The Clock by seense

All ratings20 ratings
Positive75.0%
Neutral10.0%
Negative15.0%
Written reviews15 reviews
Positive73.3%
Neutral13.3%
Negative13.3%

Availability Sync

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

The Clock by seense

No in-app purchases

None

Availability Sync

No in-app purchases

Questions

Is The Clock by seense free?
The Clock by seense costs $2.99, with no in-app purchases.
Is Availability Sync free?
Availability Sync is free to download, with no in-app purchases.
Which has better reviews, The Clock by seense or Availability Sync?
Availability Sync is rated higher. The Clock by seense averages 4.2 out of 5 from 20 ratings, while Availability Sync averages 4.4 from 5 ratings.
Do The Clock by seense or Availability Sync have ads?
Neither The Clock by seense nor Availability Sync shows ads.
Which is updated more often, The Clock by seense or Availability Sync?
The Clock by seense ships an update every 8 months, and Availability Sync weekly. Most recently, The Clock by seense was updated on September 10, 2026 and Availability Sync on June 2, 2026.

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