# Caesar vs Kiroku

The clearest difference is in-app purchases: Caesar at none against Kiroku's 3. Kiroku's advantage is ads (none vs shown) and update cadence (every 6 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Kiroku sells 3 one-off in-app purchases. Caesar asks for nothing beyond the download.

Caesar ships an update every 2 weeks, Kiroku every 6 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Caesar | Kiroku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/caesar-cipher/id1559575000/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Ad-supported | — |
| Size | 43 MB | 48 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Petr Cala](https://appshunter.io/developer/1707930729) |

## What reviewers say

### Caesar

[App page](https://appshunter.io/ios/app/caesar-cipher/id1559575000)

This utility tool encrypts and decrypts text using a Caesar cipher. Users can specify a shift value to transform their messages. Converted text can be saved within the application for later use.

**Highlights:** Caesar cipher encryption, Caesar cipher decryption, Customizable shift parameter, Save converted strings, Text transformation utility

**Features:** macOS Compatibility

**In-app purchases:** none


### Kiroku

[App page](https://appshunter.io/ios/app/kiroku/id6670502234)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A small beer | $1.99 | one-time |
| A beer | $3.99 | one-time |
| A round | $9.99 | one-time |


## Frequently asked questions

### Is Caesar free?

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

### Is Kiroku free?

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

### Do Caesar or Kiroku have ads?

Caesar shows ads; Kiroku does not.

### Which is updated more often, Caesar or Kiroku?

Caesar ships an update every 2 weeks, and Kiroku every 6 days. Most recently, Caesar was updated on October 1, 2026 and Kiroku on October 11, 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.*