Comparison

Kodex vs O

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kodex

An advanced code editor for iOS devices, offering desktop-class features like multi-caret editing, regex search, and syntax highlighting for over 150 languages. It integrates with the Files app and supports external keyboards for a seamless coding experience.

Highlights
  • Multi-caret editing
  • Regex search and replace
  • Minimap for navigation
  • Syntax highlighting (150+ languages)
  • External keyboard support
  • Files app integration
  • Customizable themes and fonts
Features
Read full description

Kodex is an advanced code editor which brings powerful and desktop-class editor features to your iPad or iPhone: * Multi-caret editing, to quickly transform code selections. * Regex search and replace, with template matching and replace-all-matches. * Minimap which allows quick scroll navigation though the document. * Multiple window support * Syntax highlighting for over 150 languages. * Trackpad support with custom gestures to add cursors (ctrl+shift+click). * Auto complete feature (currently only for HTML). * Add as many guide columns as you wish (default 80 and 120 characters). * Configurable tab size (default 4 spaces), or insert spaces when pressing tab. * Draw hints for invisible characters such as new lines, tabs, and spaces. * Customizable key bindings, so you can configure Kodex to use the same key combos you are already used to. * Kodex smartly preserves your open documents so that your work stays as you left it between launches. * Light and Dark modes. Kodex is integrated with the Files app, so you can easily open files from any other app, and from your iCloud documents folder. You can launch Kodex QuickEdit from any file sharing view in any app to edit its contents without launching the main Kodex App (be aware this functionality depends on the host app implementing the sharing activity properly). Included are 10 editor themes, and several monospaced fonts for code editing (you can install your own preferred fonts using system profiles). Font size and line spacing are adjustable, so you can configure Kodex to best fit your preferred screen size, arrangement, and orientation. Kodex is not a compiler, and you can not build or run the code you edit from it. Think of Kodex as a NotePad++ or Sublime Text substitute for iPhone and iPad. Kodex is currently optimized for external keyboards, such as Apple's Smart Keyboard for the iPad Pro, or any bluetooth/USB keyboard. More virtual keyboard features will be added in a future version.

About

O

Monitor your home remotely with real-time video surveillance. Access cloud storage, receive alarm notifications, and communicate via two-way audio. Capture photos and videos for convenient home management.

Highlights
  • Real-time video monitoring
  • Cloud storage playback
  • Alarm push notifications
  • Two-way voice intercom
  • Photo and video capture
  • Simple operation and design
Features
Read full description

O-KAM Pro, feel home anytime, anywhere. A remote video surveillance software used with the camera can help you check the dynamics of your home at any time after adding the camera. With real-time video, cloud storage playback, alarm push, two-way voice intercom, as well as photo and video and other functions. APP has simple operation and simple design, which can help you manage and use it more conveniently.

Screenshots

Kodex4 screens
O4 screens

Verdict

The call

The clearest difference is ads: Kodex at none against O's shown. O's advantage is rating (4.5 vs 4.2) and ratings volume (8.6K vs 208). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kodex sells 1 one-off in-app purchase and O sells 23 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

O holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: O has 8.6K ratings behind it against 208, so its average is the more settled of the two. Written reviews split almost evenly too, at 63% and 63% positive.

UpkeepUpdate frequency

Kodex ships an update monthly, O fortnightly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 7 level
Kodex versus O: the parameters behind the verdict, then further details
ParameterKodexO
PriceFreeFree
Rating4.2 (208 ratings)4.5 (8.6K ratings) — better
Positive reviews63.1% of reviews — better62.8% of reviews
Number of ratings2088.6K — better
Update frequencyMonthlyFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#71#7 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.413.0 — better
Further details — not scored
Size14 MB366 MB
Age rating4+17+
DeveloperBruno Philipe Resende SilvaShenzhen VeePai IoT Intelligent Technology LLC

Customer experience

Kodex

All ratings207 ratings
Positive77.3%
Neutral8.2%
Negative14.5%
Written reviews222 reviews
Positive63.1%
Neutral10.4%
Negative26.6%

O

All ratings8,584 ratings
Positive88.3%
Neutral2.7%
Negative8.9%
Written reviews2,116 reviews
Positive62.8%
Neutral6.3%
Negative30.9%

User reviews

Kodex

From 208 App Store ratings

What we love

  • 🚀 Powerful code editor
  • 👍 Well-integrated with iPad features
  • 🎨 Excellent syntax highlighting and theming
  • 📁 Broad file format support
  • 💡 Useful QuickEdit mode

Room to improve

  • 🐛 Frequent crashes and stability issues
  • 🔍 Lack of search and replace functionality
  • 🔀 Difficulty navigating between files
  • 🚫 No option to run/compile code
  • 📏 Forced word wrapping with no toggle

O

From 8.6K App Store ratings

What we love

  • 🚀 Convenient
  • 🚀 Easy to use
  • 🚀 Great picture quality
  • 🚀 Excellent value
  • 🚀 Reliable

Room to improve

  • 🐛 Connectivity issues
  • 🐛 Unreliable motion detection
  • 🔋 Battery life concerns
  • 🔍 Difficult to navigate app
  • 💸 Expensive subscription

Bugs and requests

Kodex

Reported bugs

4 issues
  • Crashes when opening certain file types
  • Loses data after copy/paste and undo/redo
  • Compatibility issues with latest iOS versions
  • Overlapping UI elements in search/replace

Requested features

5 requests
  • Add search and replace feature
  • Implement code execution/compilation
  • Improve file management and navigation
  • Provide option to disable word wrapping
  • Introduce more keyboard shortcuts

O

Reported bugs

3 issues
  • Frequent app crashes
  • Inability to view recorded footage
  • Inconsistent camera performance after updates

Requested features

5 requests
  • Easier cloud storage management
  • Improved motion detection sensitivity
  • More customization options
  • Ability to disable microphone/speakers
  • Smoother app performance

In-app purchases

1 purchases

Kodex

One-time1
  • Tip$4.99
23 purchases

O

One-time23
  • monthly card-7(SA tryout)$0.99
  • monthly card-7(tryout)$0.99
  • monthly card-7(EU tryout)$0.99
Show 20 more
  • monthly card-7(JP tryout)$0.99
  • monthly card-7(AE tryout)$0.99
  • monthly card$1.99
  • monthly card2 variants$2.99
  • monthly card(JP)-7$2.99
  • monthly card- 7$3.99
  • monthly card- 30$4.99
  • monthly card2 variants$5.99
  • monthly card(JP)- 30$5.99
  • monthly card(SA)- 30$5.99
  • half year card$6.99
  • monthly card(AE)-30$7.99
  • yearly card$12.99
  • half year card$14.99
  • yearly card$24.99
  • half year card -7$28.99
  • half year card$31.99
  • yearly card$49.99
  • yearly card - 7$49.99
  • half year card -30$74.99

Questions

Is Kodex free?
Kodex is free to download, with in-app purchases available.
Is O free?
O is free to download, with in-app purchases available.
Which has better reviews, Kodex or O?
O is rated higher. Kodex averages 4.2 out of 5 from 208 ratings, while O averages 4.5 from 8.6K ratings.
Do Kodex or O have ads?
O shows ads; Kodex does not.
Which is updated more often, Kodex or O?
Kodex ships an update monthly, and O fortnightly. Most recently, Kodex was updated on October 29, 2026 and O on October 31, 2026.
Which is more popular, Kodex or O?
Kodex currently peaks at #71 in the App Store charts, and O at #7. Chart position reflects recent download velocity rather than total install base.

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