Caesar vs ROT13 Decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caesar
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.
- Caesar cipher encryption
- Caesar cipher decryption
- Customizable shift parameter
- Save converted strings
- Text transformation utility
Read full descriptionHide full description
Converts a string into a string shifted the specified number of characters. The number of characters to shift is specified as the conversion parameter. For example, to shift the string AAAA by one character, set the conversion parameter to 1 and the selected string to AAAA. In this case, the converted string will be BBBB. The converted string can be saved in the app.
ROT13 Decoder
Read full descriptionHide full description
ROT13 Decoder is a simple yet powerful text encoding/decoding tool that supports ROT13, ROT5, and ROT18 encoding methods. Whether you're performing simple text encryption or need to quickly decode ROT-encrypted content, this app makes it effortless. Key Features: 1. ROT13: Shifts letters by 13 positions 2. ROT5: Shifts numbers by 5 positions 3. ROT18: Shifts both letters and numbers simultaneously Why Choose Us: 1. Completely offline operation for privacy protection 2. Clean and intuitive interface 3. One-click result copying 4. Zero learning curve, ready to use instantly This lightweight yet practical tool puts powerful decoding capabilities right at your fingertips, making ROT-encoded text handling a breeze on your device.
Screenshots
Verdict
The clearest difference is ads: ROT13 Decoder at none against Caesar's shown. Caesar's advantage is update cadence (every 2 weeks vs every 8 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Caesar ships an update every 2 weeks, ROT13 Decoder every 8 months. The most recent releases landed on July 29, 2026 and September 9, 2026 respectively.
| Parameter | Caesar | ROT13 Decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 43 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | 佳伟 蔡 |
In-app purchases
Caesar
No in-app purchases
ROT13 Decoder
No in-app purchases
Questions
Is Caesar free?
Is ROT13 Decoder free?
Do Caesar or ROT13 Decoder have ads?
Which is updated more often, Caesar or ROT13 Decoder?
Other comparisons
