Comparison

Jedona vs Otto AR

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

Head to head
About

Jedona

Write, compile, and run Java code directly on your mobile device. Features include a custom keyboard, syntax highlighting, and iCloud integration. Ideal for learning and testing code snippets on the go.

Highlights
  • Compile and run Java programs
  • View program output and errors
  • Custom keyboard for special characters
  • Syntax highlighting and line numbers
  • iCloud Drive integration for file import/export
Features
Read full description

Write Java code directly on your iPhone, iPad and iPod Touch! This app is ideal for learning and testing code snippets! Java is a general-purpose programming language that is class-based and object-oriented. It is intended to let application developers write once, run anywhere (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of the underlying computer architecture. Features: - Compile and run your program - View program output or detailed error - Custom keyboard for easy input of frequently used characters - Optimized for connecting with external physical/bluetooth keyboard - Advanced source code editor with syntax highlighting, bracket completion and line numbers - Import files from your personal iCloud Drive account and export files that you create. Limitations: - Internet connection is required for compilation - Maximum program running time is 20s - One file can be run at a time - Some file system, network and graphics functions may be limited - This is a batch compiler; interactive programs are not supported. For example, if your program provides an input prompt, enter the input in the Input tab prior to compilation.

About

Otto AR

Features
Read full description

Meet Otto, your owl guide to the Robin and Doug Shore Innovation Center at Kennesaw State University. Otto AR turns a walk through the building into an interactive augmented-reality tour. Explore 18 stops across three floors. At each research lab, scan Otto’s marker and watch 3D models of the work happening inside come to life, from biomedical devices to energy, cybersecurity, and infrastructure. Otto explains what each lab does, quizzes you to test what you learned, and hands out badges as you go. 18 stops to explore across three floors Collect all 9 Otto owls, one at each research lab 3D augmented-reality models at every stop Otto narrates the tour with voice guidance Quick quizzes and mini-games so you actually remember what you saw Complete the Parliament to earn your badge Solo or team modes: explore at your own pace or race a friend No account required and no personally identifying information collected, just anonymous usage data that helps improve the tour. Point your phone and explore. Built for visitors to the Shore Innovation Center at Kennesaw State University.

Screenshots

Jedona4 screens
Otto AR3 screens

Verdict

The call

The clearest difference is in-app purchases: Otto AR at none against Jedona's 1. Otto AR also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). Jedona's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price 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. Jedona sells 1 one-off in-app purchase. Otto AR asks for nothing beyond the download.

UpkeepUpdate frequency

Jedona ships an update every 2 months, Otto AR every 2 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Jedona versus Otto AR: the parameters behind the verdict, then further details
ParameterJedonaOtto AR
PriceFreeFree
Rating3.4 (61 ratings) — better—
Positive reviews46.5% of reviews—
Number of ratings61 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size21 MB418 MB
Age rating4+4+
DeveloperKetan AppaKSURSF

Bugs and requests

Jedona

Reported bugs

20 issues
  • Scanner not working correctly
  • Cannot use Scanner object more than once
  • Input issues with keyboard
  • Errors when compiling
  • Code gets deleted
Show 15 more
  • Cannot name classes freely
  • Cannot use predefined packages like Math or Scanner
  • Cannot download files from iCloud
  • App not running
  • JFrames/JPanels show X11 variable error
  • Cannot use extends keyword
  • File deletion/refactoring issues
  • Keyboard disappears during typing
  • UI buttons hidden by status bar
  • Math class crashes
  • Output lasts only 15 seconds
  • Cannot import libraries in Sandbox mode
  • Scanner returns errors
  • Code corrections not accepted
  • Cannot type with external keyboards

Requested features

20 requests
  • Add split option for output and input
  • Add Maven support for dependencies
  • Add real-time input
  • Add option to pull from GitHub
  • Add browser version
Show 15 more
  • Add auto-completer
  • Export in .jar
  • Allow class instantiation from other files
  • Improve input system for real-time interaction
  • Add dark mode
  • Allow users to name new files immediately
  • Include a 'Save' function
  • Allow user inputs to be written directly into the running program
  • Make output time unlimited
  • Expand reference page sections
  • Add more typeface options
  • Make cursor more visible
  • Support for more predefined packages
  • Allow multiple class instances
  • Add offline mode

Otto AR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Jedona

One-time1
  • Upgrade$2.99
None

Otto AR

No in-app purchases

Questions

Is Jedona free?
Jedona is free to download, with in-app purchases available.
Is Otto AR free?
Otto AR is free to download, with no in-app purchases.
Do Jedona or Otto AR have ads?
Jedona shows ads; Otto AR does not.
Which is updated more often, Jedona or Otto AR?
Jedona ships an update every 2 months, and Otto AR every 2 weeks. Most recently, Jedona was updated on November 2, 2026 and Otto AR on October 31, 2026.

Other comparisons