# Cryptgrphr — Hands-on cryptographic codes

> Hands-on cryptographic codes (iPhone/iPad app by Charlotte Walshe.)

- Source: https://appshunter.io/ios/app/cryptgrphr/id1591487828 (this page in markdown: same URL + `.md`)
- Developer: [Charlotte Walshe](https://appshunter.io/developer/1591487830)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 1 MB
- Languages: American English
- Released: 2022-01-06
- Data updated: 2026-10-08
- User reviews in markdown: https://appshunter.io/ios/app/cryptgrphr/id1591487828/reviews.md

## What is Cryptgrphr?

Cryptgrphr can be used for hands-on learning about cryptography and communicating secretly with friends (even both 
simultaneously). 
-You can encrypt anything, even emoji. 
-There are currently 5 available cryptosystems: letters to numbers, Caesar cipher, Vigenere cipher, Affine Cipher, and RSA (unpadded).


## Version history (last 2 releases)

### 1.0.1 — 2022-01-09

-Fixed crashing when no plaintext was entered and encrypt button is pressed
-For explainers, the buttons to turn the page are now in a toolbar

### 1.0 — 2022-01-06

No release notes.

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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 2026-10-08.*