# RSA Experimenter

> RSA Experimenter (iPhone/iPad app by Peter Hinman.)

- Source: https://appshunter.io/ios/app/rsa-experimenter/id1069067862 (this page in markdown: same URL + `.md`)
- Developer: [Peter Hinman](https://appshunter.io/developer/1069067861)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 2 MB
- Languages: English
- Released: 2016-02-24
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/rsa-experimenter/id1069067862/reviews.md

## What is RSA Experimenter?

This app is intended as a tool for understanding a method of encrypting messages known as Public Key Cryptography  (RSA). Invented in the 1970's this method still (in 2023) underlies much of the secure electronic transfer of information including communication with a bank (either online or from ATM machines), ordering goods online, transfering medical records and much more. The app is NOT designed for actually sending secure messages; the version of the method implemented here is intensionally a 'toy' version which is more easily understood than the full version. You will see how messages are encoded and decoded and their authenticity verified by using the app to exchange messages with colleagues and friends. The extensive help pages explain most of the mathematics behind this method. It involves  concepts often presented to 2nd or 3rd year university students but is accessible to smart and curious middle-school students; the original version of this app was in fact written to accompany a series of sessions of the author with the seventh-grade math class of one of his grandchildren.


## Version history (last 5 releases)

### 3.0 — 2023-04-24

The app has been completely rewritten in modern style and is more flexible than the earlier versions. The help pages are more complete and the user interface easier to use and more colorful.

### 2.0 — 2018-05-19

This app has been updated by Apple to display the Apple Watch app icon.

Users may choose primes used in generating keys with 4 - 8 digits. Information flow is improved.

### 1.4 — 2016-03-29

Fixed a few bugs, improved layout, added ability to transfer in a key generated on another device

### 1.3 — 2016-03-04

Improved ease of transferring incoming messages to the app, reply button after reading a message, screen for managing private keys

### 1.0 — 2016-02-24

No release notes.

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| --- | --- | --- | --- |
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| [Vigenere Shift Plus](https://appshunter.io/ios/app/vigenere-shift-plus/id951306959) | 3.3 (3) | $0.99 | Education |
| [GGBRIS Kotli](https://appshunter.io/ios/app/ggbris-kotli/id6590615785) | — | Free | Education |
| [EncryptLens](https://appshunter.io/ios/app/encryptlens/id6744273481) | — | Free | Education |
| [HDIS Bhogpur](https://appshunter.io/ios/app/hdis-bhogpur/id6590616603) | — | Free | Education |
| [Sri Hemkunt School FGP](https://appshunter.io/ios/app/sri-hemkunt-school-fgp/id6615075195) | — | Free | Education |

## More apps by Peter Hinman

- [Simple Scheduler](https://appshunter.io/ios/app/simple-scheduler/id1089047773)
- [Event Tapper](https://appshunter.io/ios/app/event-tapper/id1132349192)
- [GPS Companion](https://appshunter.io/ios/app/gps-companion/id1222112532)
- [Recipe-Reader](https://appshunter.io/ios/app/recipe-reader/id1437746807)
- [QRCodeOrganizer](https://appshunter.io/ios/app/qrcodeorganizer/id1559095952)

All apps by Peter Hinman: https://appshunter.io/developer/1069067861

## Related topics

[peter hinman](https://appshunter.io/ios/topics/peter-hinman) · [sheel rsa](https://appshunter.io/ios/topics/sheel-rsa) · [rsa](https://appshunter.io/ios/topics/rsa) · [rsa 2026](https://appshunter.io/ios/topics/rsa-2026) · [rsa application](https://appshunter.io/ios/topics/rsa-application) · [hinman](https://appshunter.io/ios/topics/hinman) · [rsa conference](https://appshunter.io/ios/topics/rsa-conference)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-16.*