Comparison

Who's Available? 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

Who's Available?

This app lets you easily share your availability status with friends and family. Securely update your status via the app, widget, or Apple Watch, and see theirs in return. No registration or login is required, and your data remains private.

Highlights
  • Share availability status
  • iCloud Shared Database integration
  • Today widget support
  • Apple Watch app
  • iMessage app integration
  • No registration required
  • Developer cannot access data
Read full description

Ever want to know if your friend is available or not before you call or text? Now you have the tool. Who's Available allows iPhone users to share availability status securely through iCloud Shared Database. You can invite friends who can see your status, set your status in-app, in the Today widget, or on your Apple Watch. Your friends can see your status in-app or in the iMessage app! - No registration / log-in needed - The developer cannot see your data. Your data is stored in iCloud

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

Who's Available?3 screens
Availability Sync4 screens

Verdict

The call

The clearest difference is rating: Availability Sync at 4.4 against Who's Available?'s 3.7. Availability Sync also leads on review sentiment (67% vs 50%). Who's Available?'s advantage is update cadence (every 2 days vs weekly) and device support (5 vs 2). On price, ratings volume, ads and in-app purchases 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

Both are free to download. 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 3.7. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews point the same way: 50% of Who's Available?'s written reviews are positive against 67% of Availability Sync's.

UpkeepUpdate frequency

Who's Available? ships an update every 2 days, Availability Sync weekly. Both last shipped on September 29, 2026.

Scorecard5 real differences · 5 level
Who's Available? versus Availability Sync: the parameters behind the verdict, then further details
ParameterWho's Available?Availability Sync
PriceFreeFree
Rating3.7 (3 ratings)4.4 (5 ratings) — better
Positive reviews50.0% of reviews66.7% of reviews — better
Number of ratings35 — better
Update frequencyEvery 2 days — betterWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac, Apple Watch — betteriPhone, iPad
Requires iOS13.0 — better17.5
Further details — not scored
Size2 MB10 MB
Age rating4+4+
DeveloperShunzhe MaDavid Fuerst

Customer experience

Who's Available?

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Availability Sync

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

In-app purchases

None

Who's Available?

No in-app purchases

None

Availability Sync

No in-app purchases

Questions

Is Who's Available? free?
Who's Available? is free to download, with no in-app purchases.
Is Availability Sync free?
Availability Sync is free to download, with no in-app purchases.
Which has better reviews, Who's Available? or Availability Sync?
Availability Sync is rated higher. Who's Available? averages 3.7 out of 5 from 3 ratings, while Availability Sync averages 4.4 from 5 ratings.
Do Who's Available? or Availability Sync have ads?
Neither Who's Available? nor Availability Sync shows ads.
Which is updated more often, Who's Available? or Availability Sync?
Who's Available? ships an update every 2 days, and Availability Sync weekly. Most recently, Who's Available? was updated on September 29, 2026 and Availability Sync on September 29, 2026.

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