# Cryptic Send vs Knock Messaging

The clearest difference is update cadence: Knock Messaging at every 5 days against Cryptic Send's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cryptic Send ships an update every 5 months, Knock Messaging every 5 days. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Cryptic Send | Knock Messaging |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cryptic-send/id6741671216/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 1 MB | 36 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cryptific LLC](https://appshunter.io/developer/1689831629) | [Baseline Polls Limited Liability Company](https://appshunter.io/developer/1631404664) |

## What reviewers say

### Cryptic Send

[App page](https://appshunter.io/ios/app/cryptic-send/id6741671216)

Encrypt your text messages within iMessage for enhanced privacy. Share sensitive information securely using a secret key, with options for messages to expire. Ideal for private conversations and situations requiring extra message control.

**Highlights:** Encrypt messages within iMessage, Use a secret key for decryption, Set messages to expire, Auto-load and decrypt messages, Add privacy to personal conversations

**Features:** iMessage stickers

**In-app purchases:** none


### Knock Messaging

[App page](https://appshunter.io/ios/app/knock-messaging/id6756548501)

**Features:** macOS Compatibility, iMessage stickers, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cryptic Send free?

Cryptic Send is free to download, with no in-app purchases.

### Is Knock Messaging free?

Knock Messaging is free to download, with no in-app purchases.

### Do Cryptic Send or Knock Messaging have ads?

Neither Cryptic Send nor Knock Messaging shows ads.

### Which is updated more often, Cryptic Send or Knock Messaging?

Cryptic Send ships an update every 5 months, and Knock Messaging every 5 days. Most recently, Cryptic Send was updated on September 15, 2026 and Knock Messaging on September 19, 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.*