# Availability Sync vs OpenHour Social

The clearest difference is rating: OpenHour Social at 5.0 against Availability Sync's 4.4. OpenHour Social also leads on review sentiment (100% vs 67%) and iOS requirement (15.1 vs 17.5). Availability Sync's advantage is in-app purchases (none vs 3) and update cadence (weekly vs monthly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. OpenHour Social sells 3 in-app purchases, starting at $9.99 per month. Availability Sync asks for nothing beyond the download.

OpenHour Social holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 13 respectively. Written reviews point the same way: 67% of Availability Sync's written reviews are positive against 100% of OpenHour Social's.

Availability Sync ships an update weekly, OpenHour Social monthly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Availability Sync | OpenHour Social |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (5 ratings)](https://appshunter.io/ios/app/availability-sync/id6670766226/reviews) | **[5.0 (13 ratings)](https://appshunter.io/ios/app/openhour-social/id6759688475/reviews)** |
| Number of ratings | 5 | **13** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 45 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [David Fuerst](https://appshunter.io/developer/1754806202) | [Mason Boutwell](https://appshunter.io/developer/1880206931) |

## What reviewers say

### 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


### OpenHour Social

[App page](https://appshunter.io/ios/app/openhour-social/id6759688475)

This app simplifies coordinating schedules with friends, groups, and clubs. It helps you find overlapping free time and plan events without endless messaging, making social organization faster and more efficient.

**Highlights:** Compare schedules to find overlapping free time, Create circles for small groups and clubs for organizations, Smart Scheduling for best meeting times, Send recommended time slots, Real-time updates and notifications, View live availability signals, Manage club coordination tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenHour Organization Pro | $9.99 | per month |
| OpenHour Organization Pro | $99.99 | per year |
| OpenHour Personal Pro | $4.99 | one-time |


## Frequently asked questions

### Is Availability Sync free?

Availability Sync is free to download, with no in-app purchases.

### Is OpenHour Social free?

OpenHour Social is free to download, with in-app purchases available.

### Which has better reviews, Availability Sync or OpenHour Social?

OpenHour Social is rated higher. Availability Sync averages 4.4 out of 5 from 5 ratings, while OpenHour Social averages 5.0 from 13 ratings.

### Do Availability Sync or OpenHour Social have ads?

Neither Availability Sync nor OpenHour Social shows ads.

### Which is updated more often, Availability Sync or OpenHour Social?

Availability Sync ships an update weekly, and OpenHour Social monthly. Most recently, Availability Sync was updated on October 14, 2026 and OpenHour Social on October 15, 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.*