Comparison

Cipher Sender vs ZP 6.4 AMP

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

Head to head

Cipher Sender

Send secret messages

Free

🔧 Utilities

★ 4.639 ratingsView app →

About

Cipher Sender

This app allows you to send secret messages to your friends using a variety of historical ciphers and codes. It supports popular encryption methods like Caesar Shift, Morse Code, and Vigenere Cipher. The application is open source, inviting community contributions.

Highlights

A1Z26 Cipher
Atbash Cipher
Caesar Shift Cipher
Morse Code
Vigenere Cipher
Open Source

Features

Read full description

Send secret messages with your friends! Cipher Sender includes some of the most popular ciphers and codes from throughout history including: - A1Z26 Cipher - Atbash Cipher - Caesar Shift Cipher - Keyboard Shift Cipher - Monoalphabetic Substitution - Morse Code - Rail Fence Cipher - ROT13 - Vigenere Cipher Cipher Sender is open source! Have an improvement in mind? Let us know at https://github.com/High5Apps/cipher-sender

About

ZP 6.4 AMP

Features

Read full description

ZP 6.4 AMP-15 The ZP 6.4 AMP-15 app allows the user to full control their ZEVOX ZP 6.4 AMP-15 at the Setting section to contour audio system to fit your tastes with the ability to apply crossovers, 15 bands of parametric/graphic EQ independent per channel, delay, assignable inputs/outputs, USB audio player and even stream music, The ZP 6.4 AMP-15 is the right path to make great sound in your car.

Screenshots

Cipher Sender4 screens

ZP 6.4 AMP4 screens

Verdict

The call

The clearest difference is iOS requirement: ZP 6.4 AMP at 9.0 against Cipher Sender's 13.0. On price, update cadence, ads and in-app purchases 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

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

Both ship on a similar rhythm, roughly every 9 months. The most recent releases landed on September 21, 2026 and December 23, 2025 respectively.

Scorecard1 real difference · 9 level

Cipher Sender versus ZP 6.4 AMP: the parameters behind the verdict, then further details
Parameter	Cipher Sender	ZP 6.4 AMP
Price	Free	Free
Rating	4.6 (39 ratings) — better	—
Positive reviews	94.6% of reviews	—
Number of ratings	39 — better	—
Update frequency	Every 9 months	Every 9 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	13.0	9.0 — better
Further details — not scored
Size	1 MB	2 MB
Age rating	4+	4+
Developer	Julian Tigler	Maslim Djanuanto

In-app purchases

None

Cipher Sender

No in-app purchases

None

ZP 6.4 AMP

No in-app purchases

Questions

Is Cipher Sender free?

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

Is ZP 6.4 AMP free?

ZP 6.4 AMP is free to download, with no in-app purchases.

Do Cipher Sender or ZP 6.4 AMP have ads?

Neither Cipher Sender nor ZP 6.4 AMP shows ads.

Which is updated more often, Cipher Sender or ZP 6.4 AMP?

Cipher Sender ships an update every 9 months, and ZP 6.4 AMP every 9 months. Most recently, Cipher Sender was updated on September 21, 2026 and ZP 6.4 AMP on December 23, 2025.