# OpenEML vs CoucoPDF

The clearest difference is update cadence: OpenEML at every 6 days against CoucoPDF's every 2 months. OpenEML also leads on ratings volume (35 vs 1). CoucoPDF's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. OpenEML sells 4 in-app purchases, starting at $1.99 per 7 days and CoucoPDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CoucoPDF holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: OpenEML has 35 ratings behind it against 1, so its average is the more settled of the two.

OpenEML ships an update every 6 days, CoucoPDF every 2 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OpenEML | CoucoPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (35 ratings)](https://appshunter.io/ios/app/openeml-eml-reader-and-viewer/id6751085601/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/coucopdf/id6761065702/reviews)** |
| Number of ratings | **35** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 46 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Danbao Intelligent Technology Co., Ltd](https://appshunter.io/developer/1833168926) | [ALEJANDRO GONZALEZ DOPICO](https://appshunter.io/developer/1883537454) |

## What reviewers say

### OpenEML

[App page](https://appshunter.io/ios/app/openeml-eml-reader-and-viewer/id6751085601)

Easily open and manage email files (.eml, .msg, .oft) on your iPhone or iPad. Read, search, and organize messages with attachments in a clean interface. All files stay on your device.

**Highlights:** Open EML, MSG, OFT files, View email details, Read HTML and plain-text content, Preview attachments with Quick Look, Save and search emails locally, Customizable themes, Private by design

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $1.99 | per 7 days |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $6.99 | per year |
| Lifetime Premium Access | $9.99 | one-time |


### CoucoPDF

[App page](https://appshunter.io/ios/app/coucopdf/id6761065702)

This app offers a comprehensive suite of tools for managing PDF documents, including scanning, signing, merging, editing, and annotating. It prioritizes user privacy by processing all data locally and provides a clean, intuitive interface for easy document control.

**Highlights:** Scan documents to PDF, Create and apply digital signatures, Merge and extract PDF pages, Edit and annotate PDFs, Organize and manage documents locally, Offline access to files

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Share & Print | $2.99 | one-time |


## Frequently asked questions

### Is OpenEML free?

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

### Is CoucoPDF free?

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

### Which has better reviews, OpenEML or CoucoPDF?

CoucoPDF is rated higher. OpenEML averages 4.8 out of 5 from 35 ratings, while CoucoPDF averages 5.0 from 1 ratings.

### Do OpenEML or CoucoPDF have ads?

Neither OpenEML nor CoucoPDF shows ads.

### Which is updated more often, OpenEML or CoucoPDF?

OpenEML ships an update every 6 days, and CoucoPDF every 2 months. Most recently, OpenEML was updated on November 8, 2026 and CoucoPDF on October 31, 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.*