Best Codex Usage Apps

67+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated June 2026

Whether you're new to codex usage or looking for an upgrade, our curated collection of 67+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Codex Usage Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CodexBar - Usage of AICodexBar - Usage of AIFree3.8★ (4)NoNoJul 2026
2CodexexCodexexFreeNoNoJun 2026
3AI Limits & Reset TrackerAI Limits & Reset TrackerFreeNoYesJul 2026
4Codex Relay - Remote Codex AppCodex Relay - Remote Codex AppFree3.9★ (14)NoYesJul 2026
5AI UsageAI UsageFreeNoNoMay 2026
6LLMuseLLMuseFreeNoYesJul 2026
7Codex UsageCodex UsageFreeNoNoJun 2026
8CUStats Go - AI Usage TrackerCUStats Go - AI Usage Tracker$8.995.0★ (1)NoNoJun 2026

Top Picks for Codex Usage

CodexBar - Usage of AI#1

CodexBar - Usage of AI by 昱晓 王

Editor's Choice
🛠️ Developer Tools
3.8(4 ratings)
Free
CodexBar - Usage of AI screenshot 1
CodexBar - Usage of AI screenshot 2
CodexBar - Usage of AI screenshot 3
CodexBar - Usage of AI screenshot 4
CodexBar - Usage of AI screenshot 5

Monitor your AI coding tool usage on your iPhone. Track rate limits, spending, and token usage for various AI providers. Share spending summaries as image cards and analyze costs with interactive charts.

More Codex Usage apps to explore

4
Codex Relay - Remote Codex App
Codex Relay - Remote Codex App
Codex Relay - Remote Codex App
Codex on your phone
Free

Manage your Codex workflow remotely from your phone. Track active threads, send prompts, review output, and respond to requests. Designed for developers to stay connected to their work without being at their desk.

Follow Codex conversations remotelySend prompts and follow-up instructionsRespond to approval and input requests
🛠️ Developer Tools
(14)
free
5
AI Usage
AI Usage
AI Usage
Track and use AI fully
Free
🔧 Utilities
(0)
6
LLMuse
LLMuse
LLMuse
by Vivien SUNDAR
Free
🛠️ Developer Tools
(0)
7
Codex Usage
Codex Usage
Codex Usage
by 赛 刘
Free
📊 Productivity
(0)
8
CUStats Go - AI Usage Tracker
CUStats Go - AI Usage Tracker
CUStats Go - AI Usage Tracker
Claude & Codex Usage Monitor
$8.99

Monitor your AI model usage to avoid exceeding limits. This app predicts your weekly consumption and provides real-time tracking with smart notifications. Your data remains private on your device.

Predicts weekly AI usage at resetReal-time monitoring of Claude and CodexSmart notifications for usage alerts
🛠️ Developer Tools
(1)
paid
9
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
10
Byztxt Greek New Testament L
Byztxt Greek New Testament L
Byztxt Greek New Testament L
Interlinear Majority Text NA28
Free

Explore the New Testament in Koine Greek with English transliterations for pronunciation. This offline app allows you to read ancient Greek text, even if you don't know the language. It includes Byzantine and Nestle Aland variants.

Koine Greek New TestamentEnglish transliteration for pronunciationOffline access
📚 Education
(12)
free
11
Byzantine Catholic Companion
Byzantine Catholic Companion
Byzantine Catholic Companion
Prayers, Feasts & Scripture
Free

This app offers a comprehensive collection of prayers, daily scripture readings, and liturgical information for Byzantine Catholics. It includes an interactive calendar, fasting guidelines, and resources for deepening personal prayer life. All content is accessible offline and remains private.

Daily Scripture ReadingsInteractive Liturgical CalendarByzantine Catholic Prayers
🔍 Reference
(12)
free
12
Amanuensis
Amanuensis
Amanuensis
by Guenther Rosenbaum
Free
🔍 Reference
(0)
13
iCoptic Synaxarium
iCoptic Synaxarium
iCoptic Synaxarium
by Emad Attia
Free

Access the complete Coptic Synaxarium offline. This reference app provides comprehensive content for users interested in Coptic religious texts.

Complete Coptic SynaxariumOffline accessReference material
🔍 Reference
(1)
free
14
Kannada Bible: Holy Scripture
Kannada Bible: Holy Scripture
Kannada Bible: Holy Scripture
Pavitra Bible: Read & Explore
Free

Access the complete Kannada Holy Bible offline, featuring Old and New Testaments. This app allows for easy navigation, searching, and customization of text size. Share verses and enjoy a user-friendly reading experience without needing an internet connection.

Offline access to Old and New TestamentsSearch functionalityAdjustable font size
📚 Books
(111)
free with in-app purchases
15
SamlibReader
SamlibReader
SamlibReader
by Ivan Kramarchuk
Free

This app provides a convenient way to read books from the "Magazine Samizdat" website. It addresses issues with incorrect HTML markup, allowing users to customize font size and encoding for a better reading experience. It also keeps track of your reading progress and book list.

Read "Magazine Samizdat" contentCustomizable font sizeSelectable text encoding
📚 Books
(3)
free
16
Synodal Bible (Русская Библия)
Synodal Bible (Русская Библия)
Synodal Bible (Русская Библия)
Russian bible, works offline.
Free
📚 Books
(0)
17
Docs On Tap V2
Docs On Tap V2
Docs On Tap V2
by Harbour Software Pty Ltd
Free

This app securely distributes documents and files to authorized users. Administrators can upload content to a web server, which then synchronizes to registered devices. Users can view, annotate, and manage their documents with synchronized progress across multiple devices.

Secure document distributionFile synchronization to devicesIn-app document annotation
💼 Business
(1)
free
18
mPolona
mPolona
mPolona
Polona - The National Library
Free
📚 Education
(0)
19
AI Watchman
AI Watchman
AI Watchman
Monitor Claude & Codex Usage
Free

This app monitors your Claude and ChatGPT usage limits in real-time across your iPhone, Apple Watch, and widgets. It predicts when you'll hit your limits and offers customizable themes and Siri integration.

Real-time Claude & ChatGPT usage trackingPredictive rate-limit warningsLive Activities & Dynamic Island integration
🛠️ Developer Tools
(2)
free
20
LP Old Church Slavonic
LP Old Church Slavonic
LP Old Church Slavonic
Vocabulary & grammar practise
$3.99

Practice Old Church Slavonic vocabulary and grammar with a program that uses multiple-choice tests. It offers immediate feedback and reinforcement through repetition, covering nouns, adjectives, and verbs. Review words and paradigms in Cyrillic or Glagolitic script.

Vocabulary practiceGrammar exercisesMultiple-choice tests
📚 Education
(9)
paid

FAQ about Codex Usage

What are the best codex usage apps for iPhone?
CodexBar - Usage of AI tops our codex usage apps ranking as of June 2026, with a 3.8-star average from 4 App Store ratings, and it's free to download.
Yes — 18 of the top codex usage apps we rank are free to download, including CodexBar - Usage of AI and Codexex.
CodexBar - Usage of AI has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
We track 67+ codex usage apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
CodexBar uses iCloud sync. You need to install the CodexBar Mac app first, enable iCloud Sync in its settings, and your usage data will automatically appear on your iPhone.
CodexBar supports providers like Claude, Cursor, ChatGPT, and OpenRouter, allowing you to monitor usage across multiple AI services.