Best Codex4 Apps & Games

98+ iOS apps & games curated and reviewed

4.5 avg rating
20 free apps & games
Updated May 2026

Finding the right codex4 app can be overwhelming with so many options. We've analyzed 98+ apps and games to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Codex4

Codex4 - For Serious Study#1

Codex4 - For Serious Study by Jonas Richner

For serious language learners
Editor's Choice
📚 Education
5.0(2 ratings)
FreeIn-App Purchases
Codex4 - For Serious Study screenshot 1
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Build a usable vocabulary for your job, studies, or hobbies with smart, spaced repetition reviews. Master real word usage and track your progress with clear statistics. Designed for serious learners with a clean interface and no gimmicks.

Claude by Anthropic#2

Claude by Anthropic by Anthropic PBC

AI assistant for life and work
Strong Contender
📊 Productivity
4.7😊(193K ratings)
FreeAdsIn-App Purchases
#2in Productivity
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This AI assistant helps you write, research, code, and solve complex problems. It can analyze documents, code, and images, and even respond to voice commands. Expand your capabilities and tackle new projects with this intelligent thinking partner.

What We Love

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and easy to use interface
  • 💡 Innovative features like 'Projects'
  • 🤖 Intelligent and thoughtful responses

Room to Improve

  • 🔒 Concerns about privacy and data usage
  • 🚫 Limitations on free usage and throttling
  • 🐛 Occasional bugs and crashes
ChatGPT#3

ChatGPT by OpenAI OpCo, LLC

The official app by OpenAI
Worth Considering
📊 Productivity
4.8😊(8.5M ratings)
FreeAdsIn-App Purchases
#1in Productivity
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This app provides access to advanced AI capabilities, including text generation, image creation from descriptions, and voice conversations. It offers personalized advice, creative inspiration, and instant answers for various tasks, syncing history across devices.

What We Love

  • 🚀 Powerful and versatile AI assistant
  • 👍 Intuitive and user-friendly interface
  • 🤖 Impressive conversational abilities
  • 💡 Convenient mobile access to ChatGPT

Room to Improve

  • 🐛 Occasional inaccuracies or inconsistencies in responses
  • 🔖 Limited to pre-2021 data, lacking real-time updates
  • 🔒 Concerns about privacy and data usage

More Codex4 apps to explore

4
Grok AI
Grok AI
Grok AI
The real-time AI assistant
Free

This AI assistant provides fast, truthful answers and can perform deep web research. It generates striking images and videos from text or voice prompts, and can analyze uploaded content. Engage in conversations with personalized AI companions and access real-time information from X.

AI-powered Q&A and web researchAI image and video generationVoice mode with live camera
📊 Productivity
(1.3M)
free with in-app purchases
5
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Perplexity - AI Search & Chat
Ask. Research. Trusted Answers
Free

Get accurate, source-backed answers to any question with this AI-powered search and chat tool. It leverages top AI models for deep research, drafting emails, and more, syncing across devices. Discover new information and organize your findings in a personal library.

AI-powered search with cited sourcesDeep research and guided explorationConversational follow-up questions
📊 Productivity
(480K)
free with in-app purchases
6
DeepSeek - AI Assistant
DeepSeek - AI Assistant
DeepSeek - AI Assistant
Intelligent AI Assistant
Free

This AI assistant offers free, intelligent help powered by a cutting-edge model. It provides rapid responses and advanced capabilities to enhance problem-solving and daily efficiency.

Intelligent AI assistantPowered by flagship AI modelFaster response times
📊 Productivity
(11K)
free
7
Microsoft Copilot
Microsoft Copilot
Microsoft Copilot
Ask AI: Chat & Voice Assistant
Free

This AI assistant helps with a wide range of tasks, from creative projects and everyday questions to work-related needs. It offers natural conversation, visual analysis, and learning tools, making tasks easier and faster.

AI Chat & Voice AssistantAI Image GenerationVisual Image Analysis
📊 Productivity
(402K)
free with in-app purchases
8
Wizards Codex
Wizards Codex
Wizards Codex
TTRPG Character Sheet App
Free

Manage your tabletop roleplaying game characters with this digital character sheet app. It offers flexibility for various game systems and allows for in-depth character management. Subscriptions and in-app purchases are available for enhanced features.

Digital character sheetsSupports multiple TTRPG systemsIn-depth character management
🎮 Games
(1)
free with in-app purchases
9
Biblia Cornilescu Romana
Biblia Cornilescu Romana
Biblia Cornilescu Romana
Audio Bible in Romanian
Free

Access the complete Holy Bible in Romanian offline, featuring both Old and New Testaments. Enjoy daily verses, easy navigation, and shareable content. Enhance your study with audio Bibles, notes, and a quiz.

Offline access to Old and New TestamentsDaily verse of the dayAudio Bible playback
📚 Books
(93)
free with in-app purchases
10
Apple Support
Apple Support
Apple Support
We’re here to help
Free

Access personalized solutions for all your Apple products and services in one convenient app. Troubleshoot issues with guided steps, chat with support, manage subscriptions, reset passwords, and find nearby service locations for Genius Bar appointments.

Personalized product solutionsSubscription managementPassword reset
🔧 Utilities
(32K)
free with in-app purchases
11
Introibo: TLM App
Introibo: TLM App
Introibo: TLM App
Latin Mass Prayer Companion
Free

This prayer companion is designed for the traditional Catholic life, offering full support for various Roman Missal and Roman Breviary rubrics. It provides daily prayers, liturgical calendar information, and fasting/abstinence guidelines, all available offline and without subscriptions or tracking.

Traditional Roman Missal and Breviary supportDaily feast, proper of the Mass, and Divine OfficeLiturgical calendar with feast details
🔍 Reference
(55)
free
12
e-codices
e-codices
e-codices
by text & bytes LLC
Free

Explore over 1,000 digitized medieval manuscripts with high-resolution images. Bookmark, download, and view historical documents offline, complete with scholarly descriptions.

Browse over 1,000 digitized manuscriptsView over 450,000 high-resolution pagesBookmark favorite manuscripts
📚 Education
(7)
free
13
Apocrypha: Bible's Lost Books
Apocrypha: Bible's Lost Books
Apocrypha: Bible's Lost Books
From King James Version Bible
Free

Explore ancient biblical texts that were once part of the King James Version. This app offers offline access to these books, with features like audio narration, bookmarking, and customizable reading settings.

Audio Bible (TTS)Offline AccessAuto-Scrolling Mode
📚 Books
(619)
free with in-app purchases
14
Google Gemini
Google Gemini
Google Gemini
Your AI assistant from Google
Free

This AI assistant helps you brainstorm, create content, and simplify complex topics. It integrates with your Google apps to provide personalized assistance, plan trips, and study smarter. Upgrade for advanced features like video generation and deeper research capabilities.

Unlimited prompting with Gemini 3 FlashLive interaction via camera/screen sharingContent creation (mockups, posters, diagrams)
📊 Productivity
(2M)
free with in-app purchases
15
Safety Codex
Safety Codex
Safety Codex
by Sicurezza 4.0 S.r.l.
Free
📚 Books
(0)
16
Guide for D4 - Diablo 4 Builds
Guide for D4 - Diablo 4 Builds
Guide for D4 - Diablo 4 Builds
Board Calculator for Diablo4
Free

This app serves as a comprehensive guide for Diablo IV players, offering detailed information on classes, skills, items, and legendary sets. It features a build calculator to help players optimize their characters for leveling and PvP.

Class informationSkill detailsItem guide
🎬 Entertainment
(96)
free with in-app purchases
17
聖經研讀本
聖經研讀本
聖經研讀本
by wwbibleus.org
Free
🔍 Reference
(781)
18
Locally AI by LM Studio
Locally AI by LM Studio
Locally AI by LM Studio
Offline & Private AI Assistant
Free

This app allows you to run powerful AI models directly on your iPhone or iPad without an internet connection. Enjoy complete privacy as no data is collected or sent to servers. It's optimized for Apple devices, offering fast and private AI interactions.

Run AI models offlinePrivate and no data collectionSupports Llama, Gemma, Qwen, and more
📊 Productivity
(1.3K)
paid
19
Protagoras — Classics Lexica
Protagoras — Classics Lexica
Protagoras — Classics Lexica
Greek and Latin dictionaries
Free

Access six essential classics reference works, including major Greek and Latin dictionaries. Features powerful search, cross-referencing, and the ability to view cited texts on the Perseus Digital Library. Bookmark favorite entries and track your search history.

Six classics reference worksPowerful searching capabilitiesCross-referenced entries
🔍 Reference
(16)
free
20
Библия : Russian Bible Audio
Библия : Russian Bible Audio
Библия : Russian Bible Audio
Русский Библия аудио и текст
Free

Access the complete Russian Holy Bible in both audio and text formats. Read and listen to all Old and New Testament books offline. Features include search, bookmarking, favorites, and adjustable text size.

Offline audio and text BibleFull Old and New TestamentSearch functionality
📚 Books
(28)
free with in-app purchases

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