For assignment tracking, grade analytics, dark mode, and GPA calculation.
1M+ users, 4.7★ — clearest task and deadline view
40K users, 4.6★ — focused dark theme for Canvas
6K users, 4.1★ — GPA estimation and grade planning
Many English-language users download ATC4 from non-Japanese sources, including pre-patched versions with a “NoDVD” crack. If the crack was designed for ATC4 version 1.00 but you have version 1.20, the verification will fail.
: The game frequently fails to launch or "disappears" from the system's active applications if
This specific simulation—often referred by its Japanese title Boku wa Koukou Kansai 4 —requires several background components to run correctly. Here is how to fix the "Application Not Found" error. 1. Reinstall OpenAL (The Most Common Fix)
: Some users report that the desktop icon fails, but the game launches successfully when opened directly from the Steam Library Quick Review of I Am An Air Traffic Controller 4 I Am An Air Traffic Controller 4 is a niche simulation game by TechnoBrain that focuses on airport management.
(ATC4). This error typically stems from missing runtime dependencies, incorrect file paths, or interference from background synchronization services. 1. Executive Summary of Verified Solutions
You’ve just downloaded I Am an Air Traffic Controller 4 (ATC4), the highly detailed Japanese air traffic control simulation from TechnoBrain. You’ve followed the installation steps, applied the necessary patches, and are ready to guide planes through the crowded skies of Tokyo Haneda or Narita. But instead of a radar screen, you’re met with a cryptic error message:
Many English-language users download ATC4 from non-Japanese sources, including pre-patched versions with a “NoDVD” crack. If the crack was designed for ATC4 version 1.00 but you have version 1.20, the verification will fail.
: The game frequently fails to launch or "disappears" from the system's active applications if
This specific simulation—often referred by its Japanese title Boku wa Koukou Kansai 4 —requires several background components to run correctly. Here is how to fix the "Application Not Found" error. 1. Reinstall OpenAL (The Most Common Fix)
: Some users report that the desktop icon fails, but the game launches successfully when opened directly from the Steam Library Quick Review of I Am An Air Traffic Controller 4 I Am An Air Traffic Controller 4 is a niche simulation game by TechnoBrain that focuses on airport management.
(ATC4). This error typically stems from missing runtime dependencies, incorrect file paths, or interference from background synchronization services. 1. Executive Summary of Verified Solutions
You’ve just downloaded I Am an Air Traffic Controller 4 (ATC4), the highly detailed Japanese air traffic control simulation from TechnoBrain. You’ve followed the installation steps, applied the necessary patches, and are ready to guide planes through the crowded skies of Tokyo Haneda or Narita. But instead of a radar screen, you’re met with a cryptic error message:
Review permissions, screenshots, update date, and recent reviews before installing any extension.
Install one extension at a time. Some modify overlapping parts of Canvas and may conflict.
These are independent Chrome Web Store listings, not maintained by Instructure or your school.
Yes, but start with one at a time. Extensions that modify the same parts of Canvas (like the dashboard or sidebar) may conflict. Test each one individually before combining.
All 5 extensions listed on this page are free to install from the Chrome Web Store. Check each store listing for details on any premium features or future pricing changes. Here is how to fix the "Application Not Found" error
Most work on common Canvas domains, but compatibility depends on your school's configuration. Check each extension's store page for supported domains and known limitations. (ATC4)
Canvas Analytics has some overlap with Canvas Chart (both visualize grades) and Canvas GPA Calculator (both do grade calculations). Tasks for Canvas and Canvas Chart both modify the dashboard area, so they may also conflict if used together. Canvas Dark Mode and Canvas GPA Calculator are more isolated — they rarely conflict with other extensions. applied the necessary patches
No. All extensions listed here are independent projects published on the Chrome Web Store. They are not developed, endorsed, or maintained by Instructure (the company behind Canvas LMS) or any educational institution. Always review permissions and privacy policies before installing.
Canvas occasionally updates its interface, which can break extensions that modify the page. If this happens, check the extension's store page for updates, read recent reviews for reports, or temporarily disable the extension until a fix is released. Extensions with larger user bases and recent updates are generally more likely to be patched quickly.
We also have a Firefox add-ons comparison page for Canvas.