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Best Hidden Message App

248+ iOS apps curated and reviewed

4.2 avg rating
19 free apps
Updated September 2026

Looking for free hidden message app? 19 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hidden Message App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CalculatorCalculatorFree3.0★ (9.8K)NoNoSep 2026
2MessagesMessagesFree4.1★ (38K)NoNoSep 2026
3News Plume (hidden messenger)News Plume (hidden messenger)Free4.2★ (18)YesNoSep 2026
4Calculator# Hide Photos VideosCalculator# Hide Photos VideosFree4.4★ (29K)NoYesSep 2026
5Signal - Private MessengerSignal - Private MessengerFree4.7★ (1.1M)NoYesSep 2026
6Scientific Calculator fx-991Scientific Calculator fx-991Free4.5★ (404)YesYesSep 2026
7Hidden Message Dot AppHidden Message Dot AppFree4.5★ (429)NoYesSep 2026
8Secret Message : Hide MessageSecret Message : Hide MessageFree—NoNoMay 2026

Top Picks for Hidden Message App

Calculator#1

Calculator by Apple

Editor's Choice
🔧 Utilities
3.0😞(9.8K ratings)
Free
Calculator screenshot 1
Calculator screenshot 2
Calculator screenshot 3

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
  • 🤯 Frustrating to fix mistakes
  • 🙄 Removed useful features in recent updates
Messages#2

Messages by Apple

Strong Contender
🌐 Social Networking
4.1😊(38K ratings)
Free
Messages screenshot 1
Messages screenshot 2
Messages screenshot 3
Messages screenshot 4
Messages screenshot 5

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.

What We Love

  • 🚀 Fast and reliable messaging
  • 🔒 End-to-end encryption
  • 👍 Seamless integration with Apple devices
  • 💡 Fun features like Memoji and stickers
  • 🤝 Easy group chat management

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 🔍 Limited search functionality
  • 📤 Inability to delete messages for others
  • 🔔 Lack of typing indicators in group chats
  • 📱 Incompatibility with non-Apple devices

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FAQ about Hidden Message App

What is the best hidden message app for iPhone?
Calculator tops our hidden message app ranking as of September 2026, with a 3.0-star average from 9.8K App Store ratings, and it's free to download.
Yes — 19 of the top hidden message app we rank are free to download, including Calculator and Messages.
Calculator has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 248+ hidden message app on the iOS App Store as of September 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.