Comparison

Sub Cipher vs ROT13 Decoder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sub Cipher

Easily encode and decode messages using simple substitution ciphers like Caesar and Atbash. Convert up to 2,000 characters at a time and save your cipher settings for later use. Ideal for fun educational purposes, not for serious secret messaging.

Highlights
  • Encode/decode simple substitution ciphers
  • Supports Caesar and Atbash cipher methods
  • Converts up to 2,000 characters at once
  • Save cipher settings as text
  • Create magic decoder wheels
  • No licensing or royalties required for published ciphers
Features
Read full description

Sub Cipher is an easy-to-use Encoder/Decoder app, which can encode or decode your text using various "simple substitution" cipher methods. * Simply type or copy-paste your encoded or decoded text to and from e-mail, messages, social media, and it is immediately converted for you. Up to 2,000 characters can be converted at a time. Sub Cipher offers you the encoded text, placeholder-text, and even a magic decoder wheel that you can add to your own books and publications. You can also capture the cipher settings you have dialed in (as lines of text) to save in another document. This can be useful if you are publishing a newsletter or book of ciphers, and want to keep a record of the settings you used with each cipher along with the cipher itself. Main Features: *Easy to use: Type into the plain-text or the cypher-text box, and the converted text is immediately displayed. *Easy to transfer: You can select all the converted text and paste it into any other text document. *Easy to adjust: Any substitution offset, forward or reverse can be dialed in. *Easy to save: The settings you dial in can also be saved as text for your notes. *Easy to publish: Any ciphers you make are 100% yours to publish and sell; no copyright restrictions or restrictive "commercial use" clauses here. *Forever Free: Download this software once and it is yours forever. You get all future new features and updates free. No upgrade costs or "subscription/rental" fees. Ever. *No Ads: You are never distracted from enjoying my software. *Human-Made: This software was completely and carefully hand-designed and written by me. No A.I. toys were allowed anywhere near this software. *Private: Your work is safely yours and always stays on your computer. You are never required to create internet accounts, and none of your information is ever stored in the cloud. * Caveat Emptor: It uses the "Caesar" and "Atbash" style cipher methods, which are simple offset-alphabet ciphers. The well-known "Rot13" cipher is one of these. These ancient styles of ciphers are very simple and easy to decode! This is simply a fun educational utility, and is not intended for serious "secret message" work.

About

ROT13 Decoder

Features
Read 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

Sub Cipher4 screens
ROT13 Decoder4 screens

Verdict

The call

Sub Cipher and ROT13 Decoder are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sub Cipher ships an update every 7 months, ROT13 Decoder every 8 months. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

ScorecardNo meaningful differences
Sub Cipher versus ROT13 Decoder: the parameters behind the verdict, then further details
ParameterSub CipherROT13 Decoder
PriceFreeFree
Rating3.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 7 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size40 MB16 MB
Age rating4+4+
DeveloperEduard Schwan佳伟 蔡

In-app purchases

None

Sub Cipher

No in-app purchases

None

ROT13 Decoder

No in-app purchases

Questions

Is Sub Cipher free?
Sub Cipher is free to download, with no in-app purchases.
Is ROT13 Decoder free?
ROT13 Decoder is free to download, with no in-app purchases.
Do Sub Cipher or ROT13 Decoder have ads?
Neither Sub Cipher nor ROT13 Decoder shows ads.
Which is updated more often, Sub Cipher or ROT13 Decoder?
Sub Cipher ships an update every 7 months, and ROT13 Decoder every 8 months. Most recently, Sub Cipher was updated on September 12, 2026 and ROT13 Decoder on September 9, 2026.

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