# Who's Available? vs Availability Sync

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.

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.

## The numbers

| Metric | Who's Available? | Availability Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/whos-available/id1508891024/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/availability-sync/id6670766226/reviews)** |
| Number of ratings | 3 | **5** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free | Free |
| Size | 2 MB | 10 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shunzhe Ma](https://appshunter.io/developer/1052286218) | [David Fuerst](https://appshunter.io/developer/1754806202) |

## What reviewers say

### Who's Available?

[App page](https://appshunter.io/ios/app/whos-available/id1508891024)

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

**In-app purchases:** none


### Availability Sync

[App page](https://appshunter.io/ios/app/availability-sync/id6670766226)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*