MAPP365 vs EML Viewer · MSG Viewer & MBOX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MAPP365
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MAPP365 is a professional mobile application designed to assess, document, and improve vaccination quality in poultry hatcheries. It supports technical, veterinary, and quality teams by transforming onsite observations into structured data, clear reports, and actionable insights that connect hatchery practices to field performance. The application guides users through the vaccination audit value stream—from planning and conducting hatchery visits to reviewing results and defining improvement actions. Audits are performed directly in the hatchery, with standardized evaluations of vaccination processes, equipment, handling, and chick quality. Data, notes, and photos are securely captured in the field, even when working offline. MAPP365 automatically consolidates audit data and generates objective, easytounderstand reports. These reports support factbased discussions with hatchery teams, helping identify root causes, reduce uncertainty, and agree on practical actions such as training, equipment adjustments, or process improvements. Over time, stored history enables comparison, benchmarking, and monitoring of vaccination quality trends. By standardizing vaccination audits and improving data transparency, MAPP365 helps hatcheries reduce risk, improve consistency, and strengthen the link between correct vaccination and better poultry performance in the field. Key features include: • Structured vaccination and chick quality assessments • Standardized checklists to reduce subjectivity in audits • Notes and photo documentation linked to audit questions • Automated generation of clear, professional reports • Historical data storage and benchmarking over time
EML Viewer · MSG Viewer & MBOX
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Opens .eml and .msg email files and winmail.dat attachments on iPhone and iPad. The first file is free. Pro opens every other file and exports PDFs. The file is read on your device. It is never uploaded, and you do not need an email account. WHAT IT OPENS • .eml and .msg files from the Files app, Mail, AirDrop, iCloud Drive and other storage apps • winmail.dat (TNEF) attachments, including the files and meeting details inside them • .oft templates and .emlx files • .mbox archives and zip files that contain email: page through the messages one at a time • A whole folder: the app lists every email file in it, subfolders included • Recent files stay in a list on the home screen • In the Files app, Quick Look shows the subject, sender, date and attachment list of an .eml, .msg or winmail.dat file before you open it READING • The message in its original formatting or as plain text • Search inside the message and jump between matches • On iPad, three columns: your files, the message details with attachments, and the message body • Full headers, and for .eml files the complete source • Authentication-Results headers are shown as the receiving server wrote them. The app does not check SPF, DKIM or DMARC itself • Remote content is off by default. Images and other remote resources are blocked before they load, so opening a message does not tell the sender you read it. You can turn it on for one message from the banner, or for all messages in Settings • Security Check lists what it finds in the message: the SPF, DKIM and DMARC results in the headers, a Reply-To that differs from the sender, links whose text and destination differ, remote images, and attachments that can run code. It reads the file only and contacts no server ATTACHMENTS • Every attachment with its name, type and size • Preview PDFs, images, Office documents and other types Quick Look recognizes • An email attached to an email opens in the viewer PDF EXPORT (PRO) • Letter or A4 • Optional: sender, recipients and date; the list of attachments; page numbers; the full headers after the message FREE AND PRO • The first email file you open is free, with everything above except PDF export • Pro opens every file after that and exports PDFs • A file that fails to open does not use up the free file, and neither does the built-in sample • If you installed the app before version 1.3, every file stays free PRIVACY • Email files are read on your device and never uploaded • No account, no ads, no cross-app tracking • The app sends anonymous usage statistics and crash reports, with nothing from your files in them. You can turn this off in Settings • Reading works without a network connection LANGUAGES The app is available in English, German, French, Spanish, Italian, Portuguese (Brazil), Japanese, Korean, Russian, Vietnamese, Simplified Chinese and Traditional Chinese. If a file will not open, use Report a Problem in the app. It sends app and device details, and nothing from the file. Privacy Policy: https://eml-msg-viewer.vercel.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: MAPP365 at none against EML Viewer · MSG Viewer & MBOX's 3. EML Viewer · MSG Viewer & MBOX's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (17.0 vs 26.1). On price, ads 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
Both are free to download. EML Viewer · MSG Viewer & MBOX sells 3 in-app purchases, starting at $1.00 per 7 days. MAPP365 asks for nothing beyond the download.
MAPP365 ships an update every 2 months, EML Viewer · MSG Viewer & MBOX every 3 weeks. The most recent releases landed on October 24, 2026 and November 6, 2026 respectively.
| Parameter | MAPP365 | EML Viewer · MSG Viewer & MBOX |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 26.1 | 17.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 18 MB |
| Age rating | 17+ | 4+ |
| Developer | Merck Sharp & Dohme LLC | Sheenu Jain |
In-app purchases
MAPP365
No in-app purchases
EML Viewer · MSG Viewer & MBOX
- Pro (Weekly)$1.007 Days
- Pro (Yearly)$7.991 Year
- Pro (Lifetime)$9.99
Questions
Is MAPP365 free?
Is EML Viewer · MSG Viewer & MBOX free?
Do MAPP365 or EML Viewer · MSG Viewer & MBOX have ads?
Which is updated more often, MAPP365 or EML Viewer · MSG Viewer & MBOX?
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