Comparison

OneSpace Secure vs Qwantum Private Messaging

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

Head to head
About

OneSpace Secure

Securely share files with end-to-end encryption. Send files directly to contacts or share links protected by passwords via email. Offers a simple and safe solution for digital file exchange.

Highlights
  • End-to-end encrypted file sharing
  • Secure file links via email
  • Password protection for shared links
  • Contact management for secure sharing
  • Cross-platform compatibility
Features
Read full description

OneSpace Secure is a file transfer app that sends your files end-to-end encrypted. We cannot read your files. Use it to send files to a client or share photos with family. Send photos, documents and videos to the people in your contacts. OneSpace encrypts each file on your phone or computer before it leaves, and only the contacts you send it to can open it. You can also send to people who don't use OneSpace. They get a link by email or SMS, protected by a password you give them, and open the file in their browser without the app or an account. With Premium, you can send files between your own phone, tablet and computer. One account works on iPhone, iPad, Mac and your other devices. If you bought a licence on our website, create your account in the app and then follow the activation steps in your order email. Premium is available in the app as a monthly or yearly subscription. Terms of Service: https://onespacesecurity.com/terms Privacy Policy: https://onespacesecurity.com/privacy

About

Qwantum Private Messaging

This secure messaging app allows users to encrypt and decrypt sensitive data using physical card readers and tokens for authentication. It fosters a community of professionals valuing privacy and document integrity.

Highlights
  • End-to-end data encryption
  • Card reader authentication
  • Token-based login
  • Secure message creation
  • Message expiration dates
  • Audit detail levels
Read full description

Qwantum Private Messaging is a cloud-based application designed to enable its users with the ability to encrypt and decrypt sensitive data. The application works with MagTek Card Readers and Qwantum Cards to provide a powerful authentication experience that does not rely on usernames and passwords. Qwantum Private Messaging is organized as a club so that it can grow and flourish by attracting like-minded professionals who see value in privacy, do not intend to use the service for unscrupulous activities, have business needs to establish the authenticity and integrity of the documents, and objects they rely on, and desire to trust with confidence those with whom they share sensitive or confidential information. To create a Private Message, simply glide your Qwantum Card through your MagTek reader or use a Member or Guest Token. Once authenticated, you can create your message, choose to add an optional attachment, designate your recipient(s), set an expiration date, and choose the level of audit detail you desire, then press email or download. The Private Message is created, encrypted, and delivered to the designated recipients. Our mission is to build a network of trust based on these timeless principles: Privacy, Integrity, and Authenticity.

Screenshots

OneSpace Secure4 screens
Qwantum Private Messaging4 screens

Verdict

The call

The clearest difference is in-app purchases: Qwantum Private Messaging at none against OneSpace Secure's 3. Qwantum Private Messaging also leads on iOS requirement (13.0 vs 15.0). OneSpace Secure's advantage is update cadence (every 3 weeks vs every 2 months). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OneSpace Secure sells 3 in-app purchases, starting at $5.99 per month. Qwantum Private Messaging asks for nothing beyond the download.

UpkeepUpdate frequency

OneSpace Secure ships an update every 3 weeks, Qwantum Private Messaging every 2 months. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
OneSpace Secure versus Qwantum Private Messaging: the parameters behind the verdict, then further details
ParameterOneSpace SecureQwantum Private Messaging
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size76 MB4 MB
Age rating4+17+
DeveloperOneSpace Security B.V.MagTek, Inc.

Customer experience

OneSpace Secure

Written reviews9 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Qwantum Private Messaging

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

In-app purchases

3 purchases

OneSpace Secure

Subscriptions3
  • OneSpace Premium Monthly$5.991 Month
  • Premium Monthly (welcome)1 Month trial$5.991 Month
  • OneSpace Premium Yearly7 Days trial$44.991 Year
None

Qwantum Private Messaging

No in-app purchases

Questions

Is OneSpace Secure free?
OneSpace Secure is free to download, with in-app purchases available.
Is Qwantum Private Messaging free?
Qwantum Private Messaging is free to download, with no in-app purchases.
Do OneSpace Secure or Qwantum Private Messaging have ads?
Neither OneSpace Secure nor Qwantum Private Messaging shows ads.
Which is updated more often, OneSpace Secure or Qwantum Private Messaging?
OneSpace Secure ships an update every 3 weeks, and Qwantum Private Messaging every 2 months. Most recently, OneSpace Secure was updated on November 3, 2026 and Qwantum Private Messaging on November 3, 2026.

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