# eM Client vs OX Drive by Open

The clearest difference is rating: OX Drive by Open at 4.2 against eM Client's 3.7. eM Client's advantage is update cadence (every 10 days vs every 3 months) and ratings volume (51 vs 5). On price, review sentiment, 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.

OX Drive by Open holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: eM Client has 51 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 48% of eM Client's written reviews are positive against 50% of OX Drive by Open's.

eM Client ships an update every 10 days, OX Drive by Open every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | eM Client | OX Drive by Open |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (51 ratings)](https://appshunter.io/ios/app/em-client/id1561166404/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/ox-drive-by-open-xchange/id1585939206/reviews)** |
| Number of ratings | **51** | 5 |
| Positive reviews | 48.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free | Free |
| Size | 179 MB | 37 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [eM Client](https://appshunter.io/developer/1561166526) | [Open-Xchange Inc.](https://appshunter.io/developer/798570180) |

## What reviewers say

### eM Client

[App page](https://appshunter.io/ios/app/em-client/id1561166404)

Manage emails, calendars, tasks, contacts, and notes efficiently in one application. Features AI assistance for drafting and replying, robust security with PGP and S/MIME encryption, and instant message translation. Offers advanced privacy options and seamless integration with cloud storage and online meetings.

**Highlights:** Unified inbox for emails, calendars, tasks, contacts, and notes, AI-powered email drafting and reply assistance, PGP and S/MIME encryption for secure communication, Instant message translation, Advanced privacy and mail-tracking pixel detection, Integration with cloud storage and online meetings

**In-app purchases:** none

**What reviewers like**

- 🚀 Reliable and customizable
- 🔒 Great privacy and security features
- 👍 Clean and intuitive interface
- 🚀 Smooth and fast performance
- 👍 Seamless sync between desktop and mobile

**What reviewers complain about**

- 🐛 Slow email sync and loading issues
- 🐛 Unreliable push notifications and badge counts
- 🐛 Inconsistent behavior compared to other email apps
- 🐛 Bugs and glitches, especially in the initial release
- 🔋 High battery consumption

**Reported bugs**

- Emails not sending immediately
- Drafts not visible or editable
- Inconsistent behavior when switching between folders
- Trouble signing in to multiple Google accounts

**Requested features**

- Calendar integration
- Improved background refresh and sync
- Custom notification sounds
- Ability to sort emails by sender
- More customization options


### OX Drive by Open

[App page](https://appshunter.io/ios/app/ox-drive-by-open-xchange/id1585939206)

Access and manage your cloud files directly from your device's native file manager. Organize, share, and edit documents, photos, and other files seamlessly. Compress files and scan documents for easy upload.

**Highlights:** Integrates with native Files app, Drag and drop file transfer, File compression, Document scanning, Edit and save files, Share files via links or invitations

**In-app purchases:** none


## Frequently asked questions

### Is eM Client free?

eM Client is free to download, with no in-app purchases.

### Is OX Drive by Open free?

OX Drive by Open is free to download, with no in-app purchases.

### Which has better reviews, eM Client or OX Drive by Open?

OX Drive by Open is rated higher. eM Client averages 3.7 out of 5 from 51 ratings, while OX Drive by Open averages 4.2 from 5 ratings.

### Do eM Client or OX Drive by Open have ads?

Neither eM Client nor OX Drive by Open shows ads.

### Which is updated more often, eM Client or OX Drive by Open?

eM Client ships an update every 10 days, and OX Drive by Open every 3 months. Most recently, eM Client was updated on November 3, 2026 and OX Drive by Open on November 3, 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.*