Who's Available? vs Availability Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Share availability status
- iCloud Shared Database integration
- Today widget support
- Apple Watch app
- iMessage app integration
- No registration required
- Developer cannot access data
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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
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.
- Instant availability sharing
- Calendar integration (iOS, Google, Outlook)
- Customizable sharing messages
- Professional calendar invitations
- Multiple time slot selection
- Time zone management
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Who's Available? ships an update every 2 days, Availability Sync weekly. Both last shipped on September 29, 2026.
| Parameter | Who's Available? | Availability Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 4.4 (5 ratings) — better |
| Positive reviews | 50.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 3 | 5 — better |
| Update frequency | Every 2 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 2 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Shunzhe Ma | David Fuerst |
Customer experience
Who's Available?
Availability Sync
In-app purchases
Who's Available?
No in-app purchases
Availability Sync
No in-app purchases
Questions
Is Who's Available? free?
Is Availability Sync free?
Which has better reviews, Who's Available? or Availability Sync?
Do Who's Available? or Availability Sync have ads?
Which is updated more often, Who's Available? or Availability Sync?
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