Best Hidden Message App

249+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated August 2026

Looking for free hidden message app? 20 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hidden Message App (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CalculatorCalculatorFree3.0★ (8.9K)NoNoAug 2026
2Signal - Private MessengerSignal - Private MessengerFree4.7★ (1.1M)NoYesAug 2026
3Secret Message : Hide MessageSecret Message : Hide MessageFreeNoNoMay 2026
4Calculator# Hide Photos VideosCalculator# Hide Photos VideosFree4.4★ (29K)NoYesAug 2026
5Dust - a safer place to textDust - a safer place to textFree4.6★ (4.3K)NoYesAug 2026
6Scientific Calculator fx-991Scientific Calculator fx-991Free4.5★ (391)YesYesAug 2026
7Hidden Message Dot AppHidden Message Dot AppFree4.5★ (429)NoYesAug 2026
8MessagesMessagesFree4.1★ (32K)NoNoAug 2026

Top Picks for Hidden Message App

Calculator#1

Calculator by Apple

Editor's Choice
🔧 Utilities
3.0😞(8.9K ratings)
Free
Calculator screenshot 1
Calculator screenshot 2
Calculator screenshot 3
Calculator screenshot 4

This app offers both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.

What We Love

  • 👍 Basic calculator functionality
  • 💡 Math notes feature
  • 🚀 Clean, simple design

Room to Improve

  • 🐛 Calculation errors
  • 🔍 Lack of history/memory functions
  • 🤔 Inconvenient to access advanced features
Signal - Private Messenger#2

Signal - Private Messenger by Signal Messenger, LLC

Say “hello” to privacy.
Strong Contender
🌐 Social Networking
4.7😊(1.1M ratings)
FreeIn-App Purchases
#14in Social Networking
Signal - Private Messenger screenshot 1
Signal - Private Messenger screenshot 2
Signal - Private Messenger screenshot 3
Signal - Private Messenger screenshot 4
Signal - Private Messenger screenshot 5
Signal - Private Messenger screenshot 6

This messaging app prioritizes your privacy with strong end-to-end encryption for all communications. It offers free text, voice, and video messaging, including group chats and disappearing stories, all without collecting your data.

What We Love

  • 🔒 Security and privacy
  • 👍 Ease of use
  • 🚀 Great call quality
  • 🚀 Smooth and pleasant user interface

Room to Improve

  • 🐛 Delayed message delivery
  • 🐛 Inconsistent image/video quality
  • 🐛 Buggy call functionality

More Hidden Message App apps to explore

4
Calculator# Hide Photos Videos
Calculator# Hide Photos Videos
Calculator# Hide Photos Videos
Hide Photos, Videos & Secrets
Free

This app disguises itself as a calculator to secretly store photos, videos, documents, notes, passwords, and more. It offers robust security features to protect your confidential information from prying eyes and hackers.

Hide Photos and VideosPassword-Protect DocumentsSecure Notes and To-Dos
🔧 Utilities
(29K)
free with in-app purchases
5
Dust - a safer place to text
Dust - a safer place to text
Dust - a safer place to text
The ease of a text: the safety
Free

This secure messaging app offers end-to-end encryption and advanced privacy features. It allows users to unsend messages, detect screenshots, and automatically erase conversation history after 24 hours. Take control of your digital communications and protect sensitive information.

End-to-end encryptionUnsend messages anytimeScreenshot detection
💼 Business
(4.3K)
free with in-app purchases
6
Scientific Calculator fx-991
Scientific Calculator fx-991
Scientific Calculator fx-991
Step-by-step Math Solver
Free

This app provides a powerful scientific calculator with step-by-step solutions for equations, advanced functions, and graphing capabilities. It includes a formula library and unit converter, inspired by a popular Casio model, to aid in learning and problem-solving for math and science subjects.

Step-by-step equation solverAdvanced scientific functionsGraphing mode
📚 Education
(391)
free with in-app purchases
7
Hidden Message Dot App
Hidden Message Dot App
Hidden Message Dot App
You won't believe. It's magic
Free

Send secret messages that appear normal to others but reveal a hidden part only to your intended recipient. Protect your conversations with an optional passcode for enhanced privacy. Supports numerous messaging platforms and email.

Hidden message functionalityPasscode protectionSupports iMessage, WhatsApp, Telegram, and more
🔧 Utilities
(429)
free with in-app purchases
8
Messages
Messages
Messages
by Apple
Free

Communicate with contacts through unlimited texts, photos, videos, and documents. Supports iMessage for Apple devices and RCS, SMS, and MMS for others. Features include message editing, unsending, and scheduling.

Send unlimited texts, photos, videos, and documentsiMessage, RCS, SMS, and MMS supportEdit and unsend messages
🌐 Social Networking
(32K)
free
9
Calculator HD: Big Buttons
Calculator HD: Big Buttons
Calculator HD: Big Buttons
Basic calc with history & tape
Free

This free iPad application offers a large, easy-to-read interface for performing basic calculations. Its user-friendly controls ensure immediate usability for everyday mathematical needs.

Large, easy-to-read displayUser-friendly controlsBasic calculations
🔧 Utilities
(1.7K)
free
10
News Plume (hidden messenger)
News Plume (hidden messenger)
News Plume (hidden messenger)
Secure private chat & news
Free

This app disguises confidential chats as a news reader to protect your conversations from prying eyes. Receive discreet notifications for incoming messages, disguised as news alerts, ensuring your private discussions remain hidden.

Disguised as a news readerSecretly hides confidential chatsDiscreet message notifications
🌐 Social Networking
(18)
ad-supported
11
Hide Messages in Photos
Hide Messages in Photos
Hide Messages in Photos
Secret messages in your photos
Free
📷 Photo & Video
(0)
12
Calculator H
Calculator H
Calculator H
Multi & History & Calculator
Free

This app offers a robust calculator with history and editable equations. It includes specialized calculators for mortgage calculations, interest rates, and currency conversions with real-time updates.

Editable calculation historyMortgage calculator (fixed, LPR, provident fund)Interest rate comparison
📊 Productivity
(17)
free
13
GhostCode: Hidden Messages
GhostCode: Hidden Messages
GhostCode: Hidden Messages
Hide a secret in any photo
Free
🔧 Utilities
(0)
14
Hidden -- Secret images
Hidden -- Secret images
Hidden -- Secret images
Exchange secret images
Free
🌐 Social Networking
(0)
15
Messenger for Messages
Messenger for Messages
Messenger for Messages
Messenger SMS: Fast & easy SMS
Free

This app redefines text messaging with unlimited sending, rich formatting, and multimedia integration. Organize conversations, search quickly, and personalize your chats with themes and stickers. Enjoy enhanced security and cross-device synchronization for a seamless communication experience.

Unlimited messagingRich text formattingMultimedia integration
🌐 Social Networking
(328)
ad-supported
16
Hide My Message - Chat freely
Hide My Message - Chat freely
Hide My Message - Chat freely
دردش بحرية وإخفي رسائلك
Free
🔧 Utilities
(0)
17
Never Forget: Message Planner
Never Forget: Message Planner
Never Forget: Message Planner
Text Scheduler & Reminders
Free
📊 Productivity
(0)
18
S-Messages text chat
S-Messages text chat
S-Messages text chat
Secret messenger private chats
Free

Transform your plain text messages into secret codes that only you can decipher. Share these encrypted messages across any platform, ensuring your conversations remain private and unreadable by others.

Convert messages to secret codesConvert secret codes back to normal messagesShare encrypted text to any app
🔧 Utilities
(5)
free with in-app purchases
19
Unseenchat
Unseenchat
Unseenchat
by 佐杰 黄
Free
🌐 Social Networking
(0)
20
nuvira
nuvira
nuvira
texting reimagined
Free
🌐 Social Networking
(0)

FAQ about Hidden Message App

What is the best hidden message app for iPhone?
Calculator tops our hidden message app ranking as of August 2026, with a 3.0-star average from 8.9K App Store ratings, and it's free to download.
Yes — 20 of the top hidden message app we rank are free to download, including Calculator and Signal - Private Messenger.
Calculator has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ hidden message app on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides both basic and scientific calculators for solving mathematical expressions. It also includes a "Math Notes" feature that allows you to type or write out equations and have them solved inline. You can create and use variables, plot equations on graphs, and perform unit and currency conversions.
Yes, the app supports graphing equations. You can type or write an equation and then tap to graph it within Math Notes. You can zoom, pan, resize the graph, and even add multiple equations to the same graph to see their relationships.