# iSecure vs Atom Messenger

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.

Both are free to download. iSecure sells 3 one-off in-app purchases. Atom Messenger asks for nothing beyond the download.

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.

## The numbers

| Metric | iSecure | Atom Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isecure-secure-messaging/id1382963605/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 42 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Hovik Aghajanyan](https://appshunter.io/developer/1309286530) | [igloocy s.r.l.](https://appshunter.io/developer/1691843040) |

## What reviewers say

### iSecure

[App page](https://appshunter.io/ios/app/isecure-secure-messaging/id1382963605)

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:** macOS Compatibility, Family Sharing, iMessage stickers, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |
| PRO without Ads | $7.99 | one-time |


### Atom Messenger

[App page](https://appshunter.io/ios/app/atom-messenger/id6450101210)

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*