Best Decode Apps & Games

228+ iOS apps & games curated and reviewed

4.8 avg rating
20 free apps & games
Updated July 2026

The best decode apps and games on iPhone average 4.8★ across 228+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Decode Apps & Games (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Cryptogram · Cryptoquote GameCryptogram · Cryptoquote GameFree4.7★ (6.7K)YesNoJul 2026
2Base64 Encoder DecoderBase64 Encoder DecoderFree5.0★ (3)NoNoMay 2026
3NFC.cool Tools Tag ReaderNFC.cool Tools Tag ReaderFree4.5★ (6.6K)YesYesJul 2026
4Morse Code Reader and DecoderMorse Code Reader and DecoderFree4.4★ (2.3K)YesYesJul 2026
5Encodify - Base64 & MD5Encodify - Base64 & MD5Free4.5★ (15)NoNoMay 2026
6Decode - Know the TruthDecode - Know the TruthFree5.0★ (2)NoYesMay 2026
7Morse Code - Learn & DecodeMorse Code - Learn & DecodeFree4.6★ (13)YesNoJul 2026
8Text Encryption ToolText Encryption ToolFree3.5★ (2)NoYesMay 2026

Top Picks for Decode

Cryptogram · Cryptoquote Game#1

Cryptogram · Cryptoquote Game by Matthew Murphy

Decode Famous Quotes
Editor's Choice
🎮 Games
4.7😊(6.7K ratings)
FreeAds
Cryptogram · Cryptoquote Game screenshot 1
Cryptogram · Cryptoquote Game screenshot 2
Cryptogram · Cryptoquote Game screenshot 3
Cryptogram · Cryptoquote Game screenshot 4
Cryptogram · Cryptoquote Game screenshot 5
Cryptogram · Cryptoquote Game screenshot 6

Decode famous quotes using a 1-to-1 substitution cipher. This free word puzzle game challenges your knowledge of language and grammar to reveal insightful sayings from notable individuals. Play online or offline and track your solve times.

What We Love

  • 👍 Great help
  • 👍 Fun, enjoyable and great mental exercise
  • 👍 Challenging but not too difficult
  • 👍 Keeps brain active

Room to Improve

  • 🐛 Possible app replication or hacking
  • 🔍 Ads are too frequent, long, and intrusive
  • 🔍 Ads are distracting and disruptive
NFC.cool Tools Tag Reader#3

NFC.cool Tools Tag Reader by Nicolo Stanciu

Read and write RFID chip cards
Worth Considering
🔧 Utilities
4.5😊(6.6K ratings)
FreeAdsIn-App Purchases
NFC.cool Tools Tag Reader screenshot 1
NFC.cool Tools Tag Reader screenshot 2
NFC.cool Tools Tag Reader screenshot 3
NFC.cool Tools Tag Reader screenshot 4
NFC.cool Tools Tag Reader screenshot 5
NFC.cool Tools Tag Reader screenshot 6

This app allows you to read and write NFC tags, scan and create QR codes, digitize documents, and capture 3D models. It offers advanced NFC tools like encryption and batch operations, alongside a versatile QR code scanner and document scanner with OCR.

What We Love

  • 💯 Excellent app
  • 🚀 Easy to use
  • 👍 User-friendly
  • 🔥 Awesome features

Room to Improve

  • 🐛 Crashes frequently
  • 💰 Expensive subscription
  • 📢 Too many ads

More Decode apps to explore

4
Morse Code Reader and Decoder
Morse Code Reader and Decoder
Morse Code Reader and Decoder
Flashlight & Light Transmitter
Free

Convert text to Morse code and vice versa. Transmit messages using flashlight, screen blinking, vibration, or sound. Includes practice modes for learning Morse code.

Text to Morse code conversionMorse code to text conversionFlashlight transmission
🔧 Utilities
(2.3K)
free with in-app purchases
5
Encodify - Base64 & MD5
Encodify - Base64 & MD5
Encodify - Base64 & MD5
encode / decode & hash toolbox
Free

This utility app allows users to encode and decode various text formats, including Base64, Unicode, Morse code, and URI encoding. It also calculates multiple hash values like MD5 and SHA256, and can encode images to Base64 and decode Base64 strings back to images.

Base64 encoding and decodingUnicode character encoding/decodingMorse code encoding/decoding
🔧 Utilities
(15)
free
6
Decode - Know the Truth
Decode - Know the Truth
Decode - Know the Truth
by Bloomrise Studios Inc.
Free

This AI-powered tool analyzes screenshots of conversations to provide insights into hidden meanings, mixed signals, and emotional patterns in relationships. It aims to offer clarity and understanding by breaking down communication.

Analyze conversation screenshotsUncover hidden meaningsUnderstand mixed signals
🌟 Lifestyle
(2)
free with in-app purchases
7
Morse Code - Learn & Decode
Morse Code - Learn & Decode
Morse Code - Learn & Decode
Simple way to learn morse code
Free

Learn and practice Morse code with this app. It offers translation between English and Morse, with output options for sound, vibration, and flashlight. Includes an auto-decode feature and a printable guide.

Morse code practice sectionEnglish to Morse translationSound, vibration, and flashlight output
🎮 Games
(13)
ad-supported
8
Text Encryption Tool
Text Encryption Tool
Text Encryption Tool
Advanced Standard Encryption
Free

Securely encrypt and decrypt text messages, emails, and confidential documents. Protect your sensitive information with advanced standard encryption and custom passwords for private communication.

Encrypt chat recordsSend confidential contentEncrypt email content
🔧 Utilities
(2)
freemium
9
Cryptogram Cryptoquip Puzzles
Cryptogram Cryptoquip Puzzles
Cryptogram Cryptoquip Puzzles
No Ads, Author Bio, Easy-Hard
Free

Engage in challenging cryptogram puzzles with a clean, ad-free interface. Explore curated quotes across various themes and track your progress against experts. Exercise your brain with logic and word games.

Ad-free and distraction-free solvingHand-curated and validated quotesTen popular puzzle categories
🎮 Games
(1.8K)
free with in-app purchases
10
Base64 Encode and Decode
Base64 Encode and Decode
Base64 Encode and Decode
by Le Vu
Free

Easily convert text and data into Base64 format and back again. This utility app provides a straightforward way to encode and decode information for various applications.

Base64 encodingBase64 decodingData conversion
🔧 Utilities
(1)
free with in-app purchases
11
DeCode
DeCode
DeCode
by Yunhai Sui
Free

This app provides a comprehensive programming syntax reference with definitions and examples in the user's native language. It leverages GPT-4 for real-time coding assistance and offers a community feature for users to share achievements and connect with others.

Programming syntax referenceNative language definitions and examplesGPT-4 powered coding assistance
📚 Education
(2)
free
12
SMD decoder
SMD decoder
SMD decoder
by Arkadiusz Fryszkowski
Free

Decode SMD resistors with this practical tool. It supports three-digit, four-digit, and EIA-96 encoded resistor values, providing quick and accurate identification.

Decodes 3-digit SMD codesDecodes 4-digit SMD codesDecodes EIA-96 SMD codes
🔧 Utilities
(1)
free
13
Decode RPO - QR Reader
Decode RPO - QR Reader
Decode RPO - QR Reader
Scan&Decode GM Vehicle QR Code
Free

Instantly decode GM vehicle RPO codes by scanning the QR code on your vehicle's label. Get a clear list of factory options installed on your car, making it easy to understand its specifications. Supports 2017 and newer model years.

Scan GM vehicle QR codesDecode RPO (Regular Production Option) codesGet clear descriptions of factory options
🔧 Utilities
(2)
ad-supported
14
Decode the Code
Decode the Code
Decode the Code
by Square Lion LLC
Free

A puzzle game inspired by a classic board game where players guess a hidden code in limited attempts. Earn in-game currency to unlock new content and challenge yourself with harder modes. Track your progress and compare it with friends.

Code-breaking gameplayUnlockable content packsHard Mode challenges
🎮 Games
(13)
free with in-app purchases
15
Alien Symbol Decoder
Alien Symbol Decoder
Alien Symbol Decoder
Try to decode them all
Free

Engage in an augmented reality scavenger hunt across a university campus. Decode hidden symbols to reveal messages and find bonus symbols to climb the leaderboard. Track your progress and review solved puzzles.

Augmented reality symbol decodingHidden message discoveryProgress tracking
🎬 Entertainment
(1)
free
16
Car Radio Decoder
Car Radio Decoder
Car Radio Decoder
Radio code series M
Free
🔧 Utilities
(0)
17
DecodeHub
DecodeHub
DecodeHub
Quick QR code
Free
📊 Productivity
(0)
18
Gematria Calculator & Decode
Gematria Calculator & Decode
Gematria Calculator & Decode
Bonus Date Between Calculator
Free

Explore hidden meanings in words and dates using various gematria systems. Calculate numerical values for phrases and analyze dates for numerological significance. Save and share your findings.

Multiple Hebrew and English ciphersReal-time calculationLetter-by-letter breakdown
📊 Productivity
(2)
free with in-app purchases
19
Morse Decoded
Morse Decoded
Morse Decoded
Learn & practice Morse Code
Free

Learn and practice Morse code with interactive stories and dedicated training modes for tapping, listening, and reading. Features adjustable difficulty, a text-to-Morse translator, and progress tracking with badges.

Stories Mode for realistic transmissionsTapping, Listening, and Reading practice modesAdjustable WPM and Farnsworth timing
📚 Education
(6)
free with in-app purchases
20
RST Decoder
RST Decoder
RST Decoder
Simple Morse Decoder App
Free

This application decodes Morse code from your microphone, acting as a practice tool to verify your keying accuracy. It offers advanced features like BPF and FFT decoders with automatic frequency and gain control, allowing for fine-tuning of reception parameters.

Microphone Morse code decodingMorse practice and keying checkBPF and FFT decoder options
📚 Education
(6)
ad-supported

FAQ about Decode

What are the best decode apps & games for iPhone?
Cryptogram · Cryptoquote Game tops our decode apps & games ranking as of July 2026, with a 4.7-star average from 6.7K App Store ratings, and it's free to download.
Yes — 20 of the top decode apps & games we rank are free to download, including Cryptogram · Cryptoquote Game and Base64 Encoder Decoder.
Cryptogram · Cryptoquote Game shows ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 228+ decode apps & games on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This is a free puzzle game where the objective is to decode famous quotes. It uses a 1-to-1 substitution cipher, meaning each letter in the encoded message consistently represents another letter in the decoded message. The game is designed for players who enjoy word puzzles and interesting quotes.
You play by deciphering encoded statements, which are famous quotes. The game employs a 1-to-1 substitution cipher. You'll use your knowledge of English grammar and common letter patterns to figure out which letter stands for another, ultimately revealing the full quote.

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