# Vigenere Shift Plus vs RSA Experimenter

The clearest difference is price: RSA Experimenter at Free against Vigenere Shift Plus's $0.99. Vigenere Shift Plus's advantage is update cadence (every 3 months vs every 13 months) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.

RSA Experimenter is free to download; Vigenere Shift Plus costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Vigenere Shift Plus ships an update every 3 months, RSA Experimenter every 13 months. The most recent releases landed on September 8, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Vigenere Shift Plus | RSA Experimenter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/vigenere-shift-plus/id951306959/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Paid | — |
| Size | 6 MB | 2 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [a Rausa](https://appshunter.io/developer/638439637) | [Peter Hinman](https://appshunter.io/developer/1069067861) |

## What reviewers say

### Vigenere Shift Plus

[App page](https://appshunter.io/ios/app/vigenere-shift-plus/id951306959)

Encrypt and decrypt text messages using the Vigenère cipher. This application provides a straightforward tool for applying this historical encryption method to your messages.

**Highlights:** Encrypt messages, Decrypt messages, Vigenère cipher implementation, Simple user interface, Text encryption tool

**Features:** Vision Pro support

**In-app purchases:** none


### RSA Experimenter

[App page](https://appshunter.io/ios/app/rsa-experimenter/id1069067862)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vigenere Shift Plus free?

Vigenere Shift Plus costs $0.99, with no in-app purchases.

### Is RSA Experimenter free?

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

### Do Vigenere Shift Plus or RSA Experimenter have ads?

Neither Vigenere Shift Plus nor RSA Experimenter shows ads.

### Which is updated more often, Vigenere Shift Plus or RSA Experimenter?

Vigenere Shift Plus ships an update every 3 months, and RSA Experimenter every 13 months. Most recently, Vigenere Shift Plus was updated on September 8, 2026 and RSA Experimenter on May 16, 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.*