# Atten vs Availability Sync

The clearest difference is in-app purchases: Availability Sync at none against Atten's 7. Atten's advantage is review sentiment (90% vs 67%) and rating (4.7 vs 4.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Atten sells 5 in-app purchases, starting at $2.99 per 7 days. Availability Sync asks for nothing beyond the download.

Atten holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Atten has 139 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 90% of Atten's written reviews are positive against 67% of Availability Sync's.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Atten | Availability Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (139 ratings)](https://appshunter.io/ios/app/atten-app-blocker/id6608976383/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/availability-sync/id6670766226/reviews) |
| Number of ratings | **139** | 5 |
| Positive reviews | **90.3% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 34 MB | 10 MB |
| Requires iOS | **17.0** | 17.5 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Third tech](https://appshunter.io/developer/1761143871) | [David Fuerst](https://appshunter.io/developer/1754806202) |

## What reviewers say

### Atten

[App page](https://appshunter.io/ios/app/atten-app-blocker/id6608976383)

This app helps you regain control of your digital time by blocking distracting apps and websites. Set customizable limits and schedules to improve focus, boost productivity, and build healthier screen time habits.

**Highlights:** App and website blocking, Customizable limits and schedules, Strict mode for unbreakable focus, Multi-device sync, Parental controls, Usage and progress tracking

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $2.99 | per 7 days |
| Monthly Plan | $2.99 | per month |
| Yearly Plan | $19.99 | per year |
| Atten Pro \| Lifetime | $39.99 | one-time |
| Atten Pro \| Lifetime (Family) | $44.99 | one-time |

**What reviewers like**

- 💰 Affordable pricing compared to competitors like Opal
- 🔒 Effective strict blocking that prevents app access
- 🎨 Beautiful and intuitive user interface design
- ⏱️ Customizable scheduling and time limits for apps
- 🎯 Significantly reduces screen time and improves focus

**What reviewers complain about**

- 🐛 App crashes and occasional bugs during use
- 🐛 Glitches allowing access to blocked apps intermittently
- ⏱️ Inaccurate app usage time tracking
- 🔄 Repetitive rating popup appears too frequently
- 🌍 Limited language support (primarily English)

**Reported bugs**

- App crashes when selecting websites to block
- Website blocking crashes and is unreliable
- Cannot modify or delete permanently active sessions without reinstalling
- Unselected apps still get blocked despite deselection
- Instagram blocking not working while other social apps block correctly

**Requested features**

- Fully customizable popup messages without fixed text
- Option to add 'Don't show this again' button to rating prompts
- Less frequent rating/feedback popups (every 6-12 months)
- Clone sessions or create reusable app lists
- Move break button to main menu for easier access


### 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 Atten free?

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

### Is Availability Sync free?

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

### Which has better reviews, Atten or Availability Sync?

Atten is rated higher. Atten averages 4.7 out of 5 from 139 ratings, while Availability Sync averages 4.4 from 5 ratings.

### Do Atten or Availability Sync have ads?

Neither Atten nor Availability Sync shows ads.

### Which is updated more often, Atten or Availability Sync?

Atten ships an update weekly, and Availability Sync weekly. Most recently, Atten was updated on October 16, 2026 and Availability Sync on October 14, 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.*