SlideToLock vs EML & MSG Email File Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SlideToLock
Instantly secure your Macs from your iPhone with a simple swipe. Monitor your Mac's status and even unlock it remotely with an experimental feature. Manage multiple Macs securely using your iCloud account.
- Remote Mac locking
- Activity monitoring (heartbeat)
- Experimental unlock feature
- Manage multiple Macs
- Secure iCloud integration
- Zero setup required
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SlideToLock – Lock your Mac remotely, with a single slide. SlideToLock is the perfect app to instantly secure your Macs, wherever you are. With a simple interaction from your iPhone, you can remotely lock one or multiple Macs in a single gesture. It's fast, fluid, and perfectly integrated into the Apple ecosystem. Effortless Remote Locking No more typing passwords or rushing to your computer. Just a swipe from the app, and your Mac locks automatically. Activity Monitoring (Heartbeat): Keep an eye on your Mac's status. The app communicates with your machine to let you know if it is currently running, or how long it has been powered off. Perfect for giving yourself peace of mind that everything is turned off at the office or at home. Unlock Feature (Experimental Mode): Slide to unlock... literally! Take control by unlocking your Mac remotely. This feature navigates through the strict security layers of macOS and is offered as an experimental access. Manage Multiple Macs Working with several computers? SlideToLock lets you add and manage all of them from one unified interface. Zero Setup, 100% Security No account creation, no passwords to remember. The app uses your iCloud account to communicate with your Macs securely and privately. Ultra-Responsive, Ultra-Apple Designed to work seamlessly and natively with macOS and iOS, SlideToLock naturally fits into your Apple routine.
EML & MSG Email File Viewer
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Opens .eml and .msg email files, and the winmail.dat attachments other apps refuse. No email account, nothing uploaded. Free. One Pro unlock: PDF export. Open, read, search, get attachments out and scan whole folders. Review EML and MSG records on iPhone, or use a true three-column workspace on iPad for professional work. Files are parsed entirely on your device; Remote Content Off blocks external loads, and Security Check summarizes on-device indicators. Preview attachments, search within the message, and inspect full headers or raw source, all free. With Pro, export Letter/A4 PDFs with metadata, attachment inventory, and page numbers. OPEN EML AND MSG FILES FROM ANYWHERE • Open .eml and .msg files from the Files app, Mail attachments, AirDrop, iCloud Drive, and third-party storage providers • Scan a whole folder: recursive discovery collects every EML and MSG file into one list • Recent files stay one tap away • Also opens .oft templates, .emlx files, and .mbox archives: page through every message in an archive • Opens winmail.dat attachments too (the file Windows mail servers send that other apps refuse), including its attachments and meeting details BUILT FOR PROFESSIONAL REVIEW • iPad: a real three-column workspace shows the message list, record details with attachments, and the message body side by side • iPhone: a focused reader with the same record controls • Search within the message and jump from match to match ON-DEVICE PROCESSING • Your files are parsed on your device and never uploaded; no account, no ads, no cross-app tracking • Remote Content Off blocks external images and resources before they load • Security Check summarizes indicators found in the opened file, such as links, attachments, and authentication headers. Plain information, never a verdict CLEAN PDF RECORDS (PRO) • Unlocked with Pro; everything else in this app is free • Export a finished Letter or A4 PDF of the message • Include optional metadata, an attachment inventory, and page numbers • Share or store the record wherever your files live INSPECT THE ORIGINAL SOURCE • Full headers and raw source, exactly as stored in the file • Authentication-Results shown verbatim: SPF, DKIM, and DMARC as reported ATTACHMENTS AT A GLANCE • See every attachment with its name, type, and size • Preview supported types full screen with Quick Look WORKS OFFLINE, SPEAKS YOUR LANGUAGE • Everything works without a network connection • Interface available in English, German, French, Spanish, Italian, Japanese, Korean, Russian, Vietnamese, Brazilian Portuguese, Simplified Chinese, and Traditional Chinese COMMON USES • Open .eml files exported from webmail or desktop mail apps • Review .msg message files from work archives • Save important messages as clean PDF records for your files (Pro) Questions, feedback, or a file that will not open? Visit the support page from the app. Every report is read. 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 update cadence: SlideToLock at weekly against EML & MSG Email File Viewer's monthly. EML & MSG Email File Viewer's advantage is iOS requirement (17.0 vs 26.0). 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
Both are free to download. SlideToLock sells 1 one-off in-app purchase and EML & MSG Email File Viewer sells 3 in-app purchases, starting at $1.00 per 7 days. Whichever you choose, the download price is not the number that matters.
SlideToLock ships an update weekly, EML & MSG Email File Viewer monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | SlideToLock | EML & MSG Email File Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Mac | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Continuum (France) | Sheenu Jain |
In-app purchases
SlideToLock
- Banner ads$1.99
EML & MSG Email File Viewer
- Pro — Weekly$1.007 Days
- Pro — Yearly$7.991 Year
- Pro — Lifetime$9.99
Questions
Is SlideToLock free?
Is EML & MSG Email File Viewer free?
Do SlideToLock or EML & MSG Email File Viewer have ads?
Which is updated more often, SlideToLock or EML & MSG Email File Viewer?
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