Comparison

Crypviser Secure Messenger vs Atom Messenger

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

Head to head
About

Crypviser Secure Messenger

This app offers a highly secure and anonymous messaging experience using blockchain technology. Enjoy private chats, video calls, and file sharing with military-grade encryption and decentralized key management. It prevents man-in-the-middle attacks and does not require personal information for registration.

Highlights
  • Blockchain-based encryption
  • Anonymous messaging
  • Private video and voice calls
  • Encrypted file sharing without size limits
  • Man-in-the-Middle attack detection
  • Multi-device support
  • Secure message synchronization
Read full description

Тhe New Standard of Security and Anonymity. Crypviser  is the most private messaging app, as it is based on Blockchain technology. The decentralized Crypviser Messenger lets you to enjoy private video chat & voice calls with automated blockchain encryption. There are no other alternatives available on the market. We utilize Blockchain to eliminate all threats of Man-in-the-Middle attack and solved the historical public key encryption issue by using decentralized encryption keys, exchanges, and authorization algorithms. Your Messages, Videos, Photos, Data, etc will reach their destination unfiltered, and most importantly UNBLOCKED! WHY SHOULD YOU USE CRYPVISER AS YOUR REGULAR CHAT, VOICE & CALLS MOBILE APP? Crypviser is based on Instant Communication Platform which cannot be Blocked or Stopped, Totally Anonymous, Bullet Proof Security using Military Grade Encryption, Salsa 20/20, Ecliptic Curve Cryptology, 512 Hash, Decentralized. Our instant private messenger has introduced a new era of cryptography based on Blockchain technologies. Attacks on your text message are impossible because crucial encryption keys are truly authenticated and distributed among thousands of blockchain nodes. Anonymous. One of our core features is, that only you should decide which text message is to be made public and which isn´t. Crypviser is the unique secure chatting app which doesn't require your phone number or perform SMS verification. Highly Secure. Send text message with our security protocol developed on genuine end-to-end encryption and blockchain based authentication algorithms exceed today´s requirements against all kinds of threats. File sharing. Enjoy sharing as many encrypted and private files, photos or videos as you want without size restriction. So we expand our boundaries from usual smm messenger and allow you limitless activities. Use our video calling app for all media sharing you need. Intrusion Detection. Detect and prevent MiTM ("Man-in-the-Middle") attacks by third parties through network. You will be always informed about eavesdropping attempts by third parties, where an attacker may stealthily listening to the private conversation without your consent. Multi-device support. Enjoy maximum convenience of running encrypted sms in the same message app's account on different devices. Secure sync. Have all your private messages and information synchronized to all your devices while being totally protected in encrypted mode.

About

Atom Messenger

Read full description

Atom is the integrated messaging solution for organizations or individuals that require maximum security. The combination of Atom's proven security architecture and absolute data ownership create an independent chat environment that is unmatched in terms of confidentiality. PRIVACY AND ANONYMITY Atom is designed to generate the least amount of metadata possible without keeping conversations inside the phone. Each user is anonymous and registration takes place only through direct invitation from the administrator of the single node. SECURE ENCRYPTION Atom performs full end-to-end encryption of all communications exchanged. Only the intended recipient, and No one else, will be able to read your messages. Encryption keys are generated and securely stored on user devices to prevent copying or backdoor access. FULL FEATURED Atom is not only a messenger for encrypted and confidential communications: it is also a versatile and feature-rich tool. • Make voice calls • Compose texts and send voice messages • Send any type of file (pdf animated gif, mp3, doc, zip, etc...) • Create group chats, add and remove members at any time • Profile security settings for cancellation due to inactivity or for managing the self-preservation of communications • Settings to define messages that self-destruct on reading or timed • Verify a contact's identity by scanning their personal QR code • Use Atom as an anonymous instant messaging tool SELF HOSTED SERVERS Atom messenger has a decentralized infrastructure where individual servers are isolated from each other. The application allows you to connect to multiple nodes that you can access by invitation or as an administrator (who purchases and manages an instance of the platform) FULL ANONYMITY Each Atom user receives a random ATOM ID that identifies him. No phone number or email address is required to use Atom. This exclusive feature allows you to use Atom completely anonymously: you don't need to give private information and you don't need to open an account. NO ADVERTISING, NO TRACKER Atom is not funded by advertising and does not collect user data. ASSISTANCE/CONTACTS If you have any questions or problems, check out our website: https://atomapp.cloud

Screenshots

Crypviser Secure Messenger4 screens
Atom Messenger4 screens

Verdict

The call

The clearest difference is device support: Crypviser Secure Messenger at 3 against Atom Messenger's 1. Crypviser Secure Messenger also leads on iOS requirement (13.0 vs 16.0). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Crypviser Secure Messenger ships an update every 5 weeks, Atom Messenger every 3 weeks. The most recent releases landed on October 19, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 8 level
Crypviser Secure Messenger versus Atom Messenger: the parameters behind the verdict, then further details
ParameterCrypviser Secure MessengerAtom Messenger
PriceFreeFree
Rating4.5 (81 ratings) — better—
Positive reviews75.7% of reviews—
Number of ratings81 — better—
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size170 MB42 MB
Age rating4+17+
DeveloperCrypviser GmbHigloocy s.r.l.

Bugs and requests

Crypviser Secure Messenger

Reported bugs

13 issues
  • No Internet Connection error despite working network
  • Login screen freezes with password field obscured by popup
  • Captcha validation rejects correct inputs
  • Registration fails with 'insufficient characters' error despite meeting requirements
  • App crashes on iOS 12 and older versions
Show 8 more
  • Messages sent but not received or arrive out of order
  • Disappearing message bombs remain indefinitely if unsent
  • Account requires re-authentication after reinstall
  • Video calls auto-disconnect upon connection
  • App crashes when writing messages
  • Last word of messages gets cut off
  • Contacts list disappears after app crash
  • Repeated payment requests despite active subscription

Requested features

8 requests
  • Dark mode option
  • Custom screensaver/wallpaper support
  • Group chat functionality
  • Better photo selection interface (not scrolling through all photos)
  • Complete screenshot blocking (not just alerts)
Show 3 more
  • More blockchain node/server information in subscription details
  • Improved notification system
  • Better contact management tools

Atom Messenger

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Crypviser Secure Messenger

No in-app purchases

None

Atom Messenger

No in-app purchases

Questions

Is Crypviser Secure Messenger free?
Crypviser Secure Messenger is free to download, with no in-app purchases.
Is Atom Messenger free?
Atom Messenger is free to download, with no in-app purchases.
Do Crypviser Secure Messenger or Atom Messenger have ads?
Neither Crypviser Secure Messenger nor Atom Messenger shows ads.
Which is updated more often, Crypviser Secure Messenger or Atom Messenger?
Crypviser Secure Messenger ships an update every 5 weeks, and Atom Messenger every 3 weeks. Most recently, Crypviser Secure Messenger was updated on October 19, 2026 and Atom Messenger on September 21, 2026.

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