Comparison

OpenEML vs CoucoPDF

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenEML

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
Read full description

EML Viewer makes it easy to open and manage email files (.eml, .msg, and .oft) directly on your iPhone or iPad. Whether you have saved important emails for reference, received EML or MSG attachments, or want to keep a portable email archive, EML Viewer lets you read, search, and organize messages in a clean, modern interface. One subscription. All your Apple devices — iPhone, iPad, and Mac.No ads. Key Features 1. Open EML, MSG, and OFT files instantly from Mail, Files, AirDrop, or any app’s Open In menu 2. View complete email details including subject, sender, recipients, and sent date 3. Read email content with support for both HTML and plain-text messages 4. Access attachments easily: preview PDFs, images, documents, and more using Quick Look 5. Save and search emails locally for fast retrieval 6. Choose from light, dark, and tinted themes to match your device style 7. Private by design: all files stay on your device, with no uploads or tracking Why Choose EML Viewer? Many email apps do not natively support .eml or Outlook .msg and .oft files outside their own ecosystem. EML Viewer provides a simple way to open email attachments, review archived messages, and access important correspondence anytime, without requiring a desktop email client. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For support or feedback, please contact us at admin@yenpi.com

About

CoucoPDF

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
Read full description

CoucoPDF: Your All-in-One PDF Toolkit Everything you need to work with PDFs, packed into one clean, powerful app. No subscriptions. No ads. No tracking. No watermarks. Ever. - SCAN DOCUMENTS: Turn your phone into a portable scanner. Snap photos of documents, receipts, or notes and instantly convert them into clean, professional PDFs. • Manage multiple scan drafts. Preview pages before saving. Drag-and-drop to reorder or delete. - SIGN PDFs: Create your signature on-screen and place it on any page. Save your signature for future use. Resize and position with precision. Sign documents in seconds. - MERGE & EXTRACT: Combine multiple files or split large documents with ease. Merge: Import PDFs, reorder pages, and export as one perfect file. Extract: Select specific pages or ranges to save as a new, independent document. - EDIT & ANNOTATE: Take full control of your files with pro-grade tools. Annotate: Add text with custom font weight, color, and styles. Highlight: Emphasize key passages. Redact: Hide sensitive information. Organize: Delete pages or reorder them instantly. - YOUR LIBRARY: Keep your files organized and accessible. Rename documents and switch between list and thumbnail views. Offline access: Everything you open, scan, or create lives in your personal library. Share: Send via Email, AirDrop, or other apps. Print directly from your device. - READER: Set it up as your default PDF Reader. - BUILT FOR PRIVACY CoucoPDF processes everything locally on your device. We do not collect analytics, track your usage, or upload documents to any server. Your files stay yours. DESIGNED TO BE SIMPLE A clean interface with five dedicated tabs: Library, Editor, Merge, Scan, and Sign. Ensures every tool is exactly where you expect it. Supports Light and Dark mode. Works on iPhone and iPad. WHY COUCOPDF? Most PDF apps are cluttered with ads, limited by paywalls, or harvest your data. CoucoPDF is different. It provides professional-grade tools without the compromise, and without the monthly fees. Download CoucoPDF and take control of your documents.

Screenshots

OpenEML4 screens
CoucoPDF4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
OpenEML versus CoucoPDF: the parameters behind the verdict, then further details
ParameterOpenEMLCoucoPDF
PriceFreeFree
Rating4.8 (35 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings35 — better1
Update frequencyEvery 6 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size14 MB46 MB
Age rating4+4+
DeveloperBeijing Danbao Intelligent Technology Co., LtdALEJANDRO GONZALEZ DOPICO

Customer experience

OpenEML

All ratings31 ratings
Positive93.5%
Neutral3.2%
Negative3.2%
Written reviews25 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CoucoPDF

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

OpenEML

Subscriptions3
  • Pro Weekly$1.997 Days
  • Pro Monthly$2.991 Month
  • Pro Yearly$6.991 Year
One-time1
  • Lifetime Premium Access$9.99
1 purchases

CoucoPDF

One-time1
  • Unlock Share & Print$2.99

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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