# Rotational Speed Converter vs Caesar

The clearest difference is price: Caesar at Free against Rotational Speed Converter's $1.99. Caesar also leads on update cadence (every 2 weeks vs every 10 months). Rotational Speed Converter's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Caesar is free to download; Rotational Speed Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Rotational Speed Converter ships an update every 10 months, Caesar every 2 weeks. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Rotational Speed Converter | Caesar |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/caesar-cipher/id1559575000/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 43 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kei Suefuji](https://appshunter.io/developer/1388335881) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Rotational Speed Converter

[App page](https://appshunter.io/ios/app/rotational-speed-converter/id1388335882)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Rotational Speed Converter free?

Rotational Speed Converter costs $1.99, with no in-app purchases.

### Is Caesar free?

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

### Do Rotational Speed Converter or Caesar have ads?

Caesar shows ads; Rotational Speed Converter does not.

### Which is updated more often, Rotational Speed Converter or Caesar?

Rotational Speed Converter ships an update every 10 months, and Caesar every 2 weeks. Most recently, Rotational Speed Converter was updated on October 12, 2026 and Caesar on October 1, 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.*