# Paranoia File Encryption PRO vs Si4Keyboard

The clearest difference is update cadence: Si4Keyboard at fortnightly against Paranoia File Encryption PRO's every 2 months. Si4Keyboard also leads on price ($0.99 vs $3.99). Paranoia File Encryption PRO's advantage is device support (4 vs 2) and iOS requirement (14.5 vs 17.6). On ads and in-app purchases there is nothing between them.

Paranoia File Encryption PRO costs $3.99 and Si4Keyboard $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Paranoia File Encryption PRO ships an update every 2 months, Si4Keyboard fortnightly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Paranoia File Encryption PRO | Si4Keyboard |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/paranoia-file-encryption-pro/id6449606072/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 24 MB | 14 MB |
| Requires iOS | **14.5** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | +4 | 17+ |
| Developer | [Frantisek Dvorak](https://appshunter.io/developer/935278497) | [文焕 陈](https://appshunter.io/developer/1810161184) |

## What reviewers say

### Paranoia File Encryption PRO

[App page](https://appshunter.io/ios/app/paranoia-file-encryption-pro/id6449606072)

Securely encrypt and conceal your private files and folders using a variety of strong encryption algorithms. This app can also hide files within JPEG images for an extra layer of security. It offers batch processing and deletion options for enhanced privacy management.

**Highlights:** Multiple strong encryption algorithms, Steganography to hide files in images, Secure deletion of original files, Batch processing of multiple files, Creates encrypted .enc files, Key for desktop application activation

**Features:** Vision Pro support

**In-app purchases:** none


### Si4Keyboard

[App page](https://appshunter.io/ios/app/si4keyboard/id6745263713)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Paranoia File Encryption PRO free?

Paranoia File Encryption PRO costs $3.99, with no in-app purchases.

### Is Si4Keyboard free?

Si4Keyboard costs $0.99, with no in-app purchases.

### Do Paranoia File Encryption PRO or Si4Keyboard have ads?

Neither Paranoia File Encryption PRO nor Si4Keyboard shows ads.

### Which is updated more often, Paranoia File Encryption PRO or Si4Keyboard?

Paranoia File Encryption PRO ships an update every 2 months, and Si4Keyboard fortnightly. Most recently, Paranoia File Encryption PRO was updated on November 3, 2026 and Si4Keyboard on November 8, 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.*