Introductory
AIStarter for 64 bit Windows - MIT
Sample Connect -> Companion sequence - @ABG
Breaking News:
Current Version, from the AI2 Help->Companion Info link: 2.74
Bugfix 2.73ad2
Dec 4 2024 2.73a Extensions Hotfix - @ewpatton
Nov 29 2024 Extensions Hotfix - @jis
Aug 27 2024 Android 14 bugfixes - @ewpatton
July 7, 2024 nb197 needs Companion 2.71 or 2.71u side load
http://ai2.appinventor.mit.edu/companions/MITAI2Companion.apk
Prior versions
Feb 19, 2024 nb196 needs Companion 2.70 or 2.70u side load
Dec 1 2023 nb195b needs Companion 2.69 or 2.69u side load
Sep 4 2023 nb194b needs Companion 2.68 or 2.68u side load
June 19 2023 nb193 needs Companion 2.67 or 2.67u side load
Feb 17 2023 nb191 needs Companion 2.66 or 2.66u side load
Sep 22 2022 nb190 needs Companion 2.65 or 2.65u side load
June 2022 - Companion 2.63 PlayStore rollout hiccup - ewpatton
March 2022 - Please test Companion under https - Hal
Sept 2021 - Chrome 94 broke access to aiStarter
March 2021 - Chrome 89 broke Companion Connections - Fixed. - jis
Usage Techniques
Check the MIT Rendezvous server status - JIS
MIT AIStarter (Connect->Emulator) Companion Update Videos 2024
Connecting to MIT App Inventor Emulator and Updating Companion - YouTube 2016 (obsolete)
Screen switching limitations in the Companion and Emulator - @Taifun
Switching to Landscape in the Emulator Ctrl-F11- Juan Antonio
Texting between multiple emulators - ewpatton
Other Emulators
Google Play Games emulator for Windows Beta (unusable for AI2, don't bother - ABG) - March 2024
Notes for Windows 11 Home users unable to install emulators - @ABG
Appetize.io - Online emulator, runs .apk in your browser
GenyMotion
Summary
Android Studio emulator with AI2
Microsoft's free Visual Studio Android emulator
Ad Supported emulators - Beware virus warnings
MemuPlay based Companion Download and startup videos - ABG
MemuPlay emulator setup and Companion startup (videos no longer work) - Italo, ABG
MIT's 2021 beta version of their emulator
Androidx86
Use androidx86 as an emulator for AI2 - TIMAI2
Schools
Windows PowerShell aistarter Companion Update script - @ewpatton
School network setup for AI2 - SteveJG, MIT
Improved emulator setup - Troy Kozee
There is a way to tell the emulator to use an http proxy - jis
How to reduce emulator profile sizes - @ewpatton
Platforms
Intel Mac running macOS 15.2 Sequoia Jan 2025 - @ewpatton
Apple Silicon Macs 9/23 - @ewpatton
Chromebook Companion setup - ewpatton
Ubuntu 10.04 instructions - SteveJG
Ubuntu 22 over USB - @TimAI2 et al
Installing and using companion using only a tablet - @Dominique_Quevy
Other
Summary
Companion App: install from unknown sources not working anymore - ewpatton
Delete Companion Files - Anke, TimAI2
How to Manually Update the Companion in the Emulator (when self-update fails) - Yong_Tang
Emulator.apk file Not Found Exception (ESET Antivirus)
Companion is using many UDP Ports on WebRTC connection
Companion Versions 2.53 vs 2.53u usage and improvements
Companion changes December 2018 - MIT
Emergency Companion 2.47 download link
Galaxy S7 USB connection needs RNDIS (USB-Ethernet) (not MTP) developer settings - TFO
How to run apk on Chrome with ARCWelder - Obsolete, Chrome dropped Apps.
[MIT AI2 Companion: NW.js + ARChon + Emulator.apk (windows) - Yong_Tang
URI is not absolute trying to read a Media //filename
Dead links
Debugging issues in running the App Inventor Setup Tools and the emulator on Windows (HAL)