# Calendar Busy Sync vs Haven Docs

The clearest difference is update cadence: Haven Docs at every 2 weeks against Calendar Busy Sync's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calendar Busy Sync ships an update every 2 months, Haven Docs every 2 weeks. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Calendar Busy Sync | Haven Docs |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 10 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sous Chef Studio, Inc.](https://appshunter.io/developer/1768173412) | [Raghav Jhawar](https://appshunter.io/developer/1894452438) |

## What reviewers say

### Calendar Busy Sync

[App page](https://appshunter.io/ios/app/calendar-busy-sync/id6762634278)

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

**In-app purchases:** none


### Haven Docs

[App page](https://appshunter.io/ios/app/haven-docs/id6763818049)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Busy Sync free?

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

### Is Haven Docs free?

Haven Docs is free to download, with no in-app purchases.

### Do Calendar Busy Sync or Haven Docs have ads?

Neither Calendar Busy Sync nor Haven Docs shows ads.

### Which is updated more often, Calendar Busy Sync or Haven Docs?

Calendar Busy Sync ships an update every 2 months, and Haven Docs every 2 weeks. Most recently, Calendar Busy Sync was updated on October 7, 2026 and Haven Docs on October 19, 2026.

---

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