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Best Hidden Message App

248+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated October 2026

Looking for free hidden message app? 20 of our 248+ tracked titles are free to download โ€” no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hidden Message App (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CalculatorCalculatorFree3.1โ˜… (10K)NoNoOct 2026
2Private Message BoxPrivate Message BoxFree3.1โ˜… (23)YesYesOct 2026
3Signal - Private MessengerSignal - Private MessengerFree4.7โ˜… (1.1M)NoYesOct 2026
4News Plume (hidden messenger)News Plume (hidden messenger)Free4.0โ˜… (20)YesNoOct 2026
5Hidden Message Dot AppHidden Message Dot AppFree4.5โ˜… (431)NoYesOct 2026
6OneCalc: All-in-one CalculatorOneCalc: All-in-one CalculatorFree4.6โ˜… (5.1K)YesNoOct 2026
7Private Messenger HubPrivate Messenger HubFree3.0โ˜… (2)NoYesOct 2026
8Calculator# Hide Photos VideosCalculator# Hide Photos VideosFree4.4โ˜… (29K)NoYesOct 2026

Top Picks for Hidden Message App

Calculator#1

Calculator by Apple Inc.

Editor's Choice
๐Ÿ”ง Utilities
3.1๐Ÿ˜ž(10K 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

  • ๐Ÿ‘ Basic calculator functionality
  • ๐Ÿ’ก Math notes feature
  • ๐Ÿš€ Clean, simple design

Room to Improve

  • ๐Ÿ› Calculation errors
  • ๐Ÿ” Lack of history/memory functions
  • ๐Ÿค” Inconvenient to access advanced features
  • ๐Ÿคฏ Frustrating to fix mistakes
  • ๐Ÿ™„ Removed useful features in recent updates
Signal - Private Messenger#3

Signal - Private Messenger by Signal Messenger, LLC

Say โ€œhelloโ€ to privacy.
Worth Considering
๐ŸŒ Social Networking
4.7๐Ÿ˜Š(1.1M ratings)
FreeIn-App Purchases
#11in 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

  • ๐Ÿ”’ Security and privacy
  • ๐Ÿ‘ Ease of use
  • ๐Ÿš€ Great call quality
  • ๐Ÿš€ Smooth and pleasant user interface
  • ๐Ÿ”’ End-to-end encryption
  • ๐Ÿ”’ Non-profit ownership

Room to Improve

  • ๐Ÿ› Delayed message delivery
  • ๐Ÿ› Inconsistent image/video quality
  • ๐Ÿ› Buggy call functionality
  • ๐Ÿ› Inability to edit sent messages
  • ๐Ÿ› Unreliable notifications
  • ๐Ÿ”’ Mandatory contact sharing

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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 October 2026, with a 3.1-star average from 10K App Store ratings, and it's free to download.
Yes โ€” 20 of the top hidden message app we rank are free to download, including Calculator and Private Message Box.
Calculator has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 248+ hidden message app on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.