# Whisper vs CryptoDuck

The clearest difference is in-app purchases: Whisper at none against CryptoDuck's 6. Whisper also leads on update cadence (every 4 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CryptoDuck sells 6 in-app purchases, starting at $0.99 per month. Whisper asks for nothing beyond the download.

Whisper ships an update every 4 days, CryptoDuck every 3 months. The most recent releases landed on September 15, 2026 and August 10, 2026 respectively.

## The numbers

| Metric | Whisper | CryptoDuck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Size | 2 MB | 11 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [昱昕 陈](https://appshunter.io/developer/1400361655) | [Beijing Baitemi Technology Co., Ltd](https://appshunter.io/developer/1789135443) |

## What reviewers say

### Whisper

[App page](https://appshunter.io/ios/app/whisper-text-encryption/id6737430843)

**Features:** macOS Compatibility

**In-app purchases:** none


### CryptoDuck

[App page](https://appshunter.io/ios/app/cryptoduck-secret-chat/id6740244562)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $7.99 | per year |
| Couple Pack | $0.99 | one-time |
| Emoji Pack | $0.99 | one-time |
| Festival Pack | $0.99 | one-time |
| Pro Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is Whisper free?

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

### Is CryptoDuck free?

CryptoDuck is free to download, with in-app purchases available.

### Do Whisper or CryptoDuck have ads?

Neither Whisper nor CryptoDuck shows ads.

### Which is updated more often, Whisper or CryptoDuck?

Whisper ships an update every 4 days, and CryptoDuck every 3 months. Most recently, Whisper was updated on September 15, 2026 and CryptoDuck on August 10, 2026.

---

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