Comparison

iSecure 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

iSecure

Encrypt your messages with a custom password before sending. Recipients need the correct password to decrypt and read sensitive or confidential information.

Highlights
  • Password-protected messages
  • Message encryption
  • Customizable passwords
  • Secure communication
  • Enhanced privacy for sensitive data
Features
Read full description

iSecure seals your messages so only someone who knows the key can read them. Write a secret, pick a key and tap Seal. Send it in iMessage, share it as a QR code, or paste it into any chat, email or note. Your friend opens it with the same key — nobody in between can read it, and your messages are never stored on a server. SEAL AND SEND • Seal right inside iMessage — the live bubble shows your hint and turns to "Opened" • Share as a QR code or as text to WhatsApp, Telegram, Mail or anywhere • Add a hint so your friend knows which key to use OPEN WITHOUT COPY-PASTE • Long-press a secret in any app → Share → Open in iSecure • Scan an iSecure QR code with the iPhone Camera or inside the app • You always choose the key — nothing opens by itself REVEAL SAFELY • Hold to reveal; the text hides again automatically • Revealed secrets are hidden from screenshots and screen recording • Face ID or your passcode before any saved key is used STRONG KEYS • Generate a 5-word passphrase or a random key in one tap • A strength meter warns you about weak keys • Keys live in the secure iOS Keychain on your device only ISECURE PRO Free: 2 saved keys, 30-second auto-hide, ads. Pro: unlimited keys, seal with a one-time password, choose when secrets hide (10 s to never), burn after reading, and no ads. Pro Yearly with a 1-week free trial, Pro Monthly, or Pro Lifetime. Earlier "Pro" and "No Ads" purchases are honoured. PRIVATE BY DESIGN • Your messages and keys never leave your device unencrypted • AES-256-GCM encryption with a unique salt for every message • The app locks with Face ID or your device passcode Messages sealed with earlier versions of iSecure still open. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage them in Settings › Apple Account › Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aghajanyan.me/isecure/privacy.html

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

iSecure4 screens
Atom Messenger4 screens

Verdict

The call

The clearest difference is in-app purchases: Atom Messenger at none against iSecure's 3. Atom Messenger also leads on ads (none vs shown). iSecure's advantage is update cadence (every 2 days vs every 3 weeks). On price, device support and iOS requirement 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. iSecure sells 3 one-off in-app purchases. Atom Messenger asks for nothing beyond the download.

UpkeepUpdate frequency

iSecure ships an update every 2 days, Atom Messenger every 3 weeks. The most recent releases landed on October 3, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 6 level
iSecure versus Atom Messenger: the parameters behind the verdict, then further details
ParameteriSecureAtom Messenger
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size20 MB42 MB
Age rating4+17+
DeveloperHovik Aghajanyanigloocy s.r.l.

In-app purchases

3 purchases

iSecure

One-time3
  • Pro Version$3.99
  • Remove Ads$4.99
  • PRO without Ads$7.99
None

Atom Messenger

No in-app purchases

Questions

Is iSecure free?
iSecure is free to download, with in-app purchases available.
Is Atom Messenger free?
Atom Messenger is free to download, with no in-app purchases.
Do iSecure or Atom Messenger have ads?
iSecure shows ads; Atom Messenger does not.
Which is updated more often, iSecure or Atom Messenger?
iSecure ships an update every 2 days, and Atom Messenger every 3 weeks. Most recently, iSecure was updated on October 3, 2026 and Atom Messenger on September 21, 2026.

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