# Sync2 Outlook Google & iCloud vs 4DI

The clearest difference is update cadence: 4DI at weekly against Sync2 Outlook Google & iCloud's every 8 months. Sync2 Outlook Google & iCloud's advantage is device support (3 vs 1) and iOS requirement (15 vs 18.6). On price, 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.

Sync2 Outlook Google & iCloud ships an update every 8 months, 4DI weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Sync2 Outlook Google & iCloud | 4DI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (114 ratings)](https://appshunter.io/ios/app/sync2-outlook-google-and-icloud/id1120543559/reviews)** | — |
| Number of ratings | **114** | — |
| Positive reviews | 18.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 5 MB |
| Requires iOS | **15** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alittera Ltd Inc](https://appshunter.io/developer/410883358) | [Robert Poetzsch](https://appshunter.io/developer/1860642630) |

## What reviewers say

### Sync2 Outlook Google & iCloud

[App page](https://appshunter.io/ios/app/sync2-outlook-google-and-icloud/id1120543559)

Seamlessly synchronize your Microsoft Outlook data, including emails, calendars, and contacts, with Google, iCloud, and other cloud services. This companion app enables two-way syncing between your PC and mobile devices like iPhone and iPad, even when Outlook is closed.

**Highlights:** Sync Outlook with iPhone/iPad via Google, Sync Outlook Calendar with Google Calendars, Sync Outlook Contacts with Google Contacts, Sync Outlook Tasks with Google Tasks Lists, Two-way synchronization, Sync without Microsoft Exchange server, Automatic backups before sync

**In-app purchases:** none


### 4DI

[App page](https://appshunter.io/ios/app/4di-data-integrity-tool/id6760180866)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sync2 Outlook Google & iCloud free?

Sync2 Outlook Google & iCloud is free to download, with no in-app purchases.

### Is 4DI free?

4DI is free to download, with no in-app purchases.

### Do Sync2 Outlook Google & iCloud or 4DI have ads?

Neither Sync2 Outlook Google & iCloud nor 4DI shows ads.

### Which is updated more often, Sync2 Outlook Google & iCloud or 4DI?

Sync2 Outlook Google & iCloud ships an update every 8 months, and 4DI weekly. Most recently, Sync2 Outlook Google & iCloud was updated on October 24, 2026 and 4DI on October 25, 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.*