(Autonomous Robot Control Software)
Make robots with the easiest robot programming software. Experience user-friendly features that make any robot easy to program.
Change Release Notes
It is a happy valentines day for ARC and robots - now even more than ever with this ARC update. This includes many new fixes, features, stability, and performance updates. Most notably, the latest update of NMS (Navigation Messaging System) has higher resolution and improved support for new SLAM algorithms and pathfinding.

ARC Pro & Runtime Updates
- duplicate script option in script collection
- trim whitespace on phrases for bing speech recognition
- fix default bing speech recognition example movement command scripts
- Updated NMS to use float for higher precision and support for new features
- removed the "Speak" option from the pandora bot to use script instead. It was causing too many issues and is now updated to operate the same as other similar robot skills
- removed two duplicate buttons in add control
- Fix for intellisense in python and javascript when the line begins with a comment
- Updated to the latest python 3
- Performance improvement for script compiler
Teams Updates
- Includes all previously mentioned updates of ARC Pro & Runtime
- Fix for Blockly populating ControlCommand and variables and AutoPosition items
- Enable Blockly console logging with an option in the preferences menu
- Improved GUI render performance
- Updated Twitter library to fix known issues
- Fix for inverting servo in some robot skills (i.e., talk servo)
- Due to our high storage costs, free users no longer have access to cloud storage
- A few reminder banners added for free users to upgrade to pro
- Fix for when changing the size of interface builder workspace where an error would display about invalid input
- There is now a 1 hour limit per project for free users (Reversed in 2022.02.22 update)
- Optimized some internal services for performance and exception handling
- Added many new Math function blocks to Blockly (pi, sin, cos, tan, constrain, exp, and many many many more)
- Updated the shortcut creator and included links to support documents
- The previous version of Teams will be deprecated March 14th
*Note: any NMS-related robot skills will need to be updated to work with this skill. When loading ARC, it will prompt any pending robot skill updates.

ARC Pro & Runtime Updates
- duplicate script option in script collection
- trim whitespace on phrases for bing speech recognition
- fix default bing speech recognition example movement command scripts
- Updated NMS to use float for higher precision and support for new features
- removed the "Speak" option from the pandora bot to use script instead. It was causing too many issues and is now updated to operate the same as other similar robot skills
- removed two duplicate buttons in add control
- Fix for intellisense in python and javascript when the line begins with a comment
- Updated to the latest python 3
- Performance improvement for script compiler
Teams Updates
- Includes all previously mentioned updates of ARC Pro & Runtime
- Fix for Blockly populating ControlCommand and variables and AutoPosition items
- Enable Blockly console logging with an option in the preferences menu
- Improved GUI render performance
- Updated Twitter library to fix known issues
- Fix for inverting servo in some robot skills (i.e., talk servo)
- Due to our high storage costs, free users no longer have access to cloud storage
- A few reminder banners added for free users to upgrade to pro
- Fix for when changing the size of interface builder workspace where an error would display about invalid input
- There is now a 1 hour limit per project for free users (Reversed in 2022.02.22 update)
- Optimized some internal services for performance and exception handling
- Added many new Math function blocks to Blockly (pi, sin, cos, tan, constrain, exp, and many many many more)
- Updated the shortcut creator and included links to support documents
- The previous version of Teams will be deprecated March 14th
*Note: any NMS-related robot skills will need to be updated to work with this skill. When loading ARC, it will prompt any pending robot skill updates.
ARC Downloads
ARC Free
Free
- Includes a free 3rd party plugin robot skill per project
- GPT-Powered AI support
- Free with trial limitations
For schools, personal use & organizations. This edition is updated every 6-12 months.
Recommended
ARC Pro
Only $8.99/mo
- 2 or more PCs simultaneously
- Includes unlimited skills
- Premium support discount
- And much more
Experience the latest features and bug fixes weekly. A Pro subscription is required to use this edition.
Runtime
Free
- Load and run any ARC project
- Operates in read-only mode
- Unlimited robot skills
- Early access fixes & features
Have you finished programming your robot? Use this to run existing ARC projects for free*.
- Minimum requirements are Windows 10 or higher with 2+gb ram and 500+MB free space.
- Teams known-issues can be viewed by clicking here.
- Get more information about each ARC edition by clicking here.
- See what's new in the latest versions with Release notes.
Compare Editions
Feature | ARC FREE |
ARC PRO |
---|---|---|
Get ARC for Free | View Plans | |
Usage | Personal DIY Education |
Personal DIY Education Business |
Premium support | $14.99/ticket | $9.99/ticket |
Feature requests | Yes | |
Early access to new features & fixes | Yes | |
Simultaneous microcontroller connections* | 1 | 255 |
Robot skills* | 20 | Unlimited |
Skill Store plugins* | 1 | Unlimited |
Cognitive services usage** | 10/day | 6,000/day |
Auto-positions gait actions* | 40 | Unlimited |
Speech recongition phrases* | 10 | Unlimited |
Camera devices* | 1 | Unlimited |
Vision resolution | max 320x240 | Unlimited |
Interface builder* | 2 | Unlimited |
Cloud project size | 128 MB | |
Cloud project revision history | Yes | |
Create Exosphere requests | 50/month | |
Exosphere API access | Contact Us | |
Volume license discounts | Contact Us | |
Get ARC for Free | View Plans |
* Per robot project
** 1,000 per cognitive type (vision recognition, speech recognition, face detection, sentiment, text recognition, emotion detection)
** 1,000 per cognitive type (vision recognition, speech recognition, face detection, sentiment, text recognition, emotion detection)
Upgrade to ARC Pro
Harnessing the power of ARC Pro, your robot can be more than just a simple automated machine.
Teams will work with a subscription or a free user. If you're a free user, there are limitations. If you use Teams with a subscription account, there are no limitations.
If you need more information, find it here: https://synthiam.com/Support/Install/Download-And-Install-ARC
How do I download the ARC onto a second PC with it asking me to sign up and pay again? I'm sure its just a matter of pointing to the right place on the site. I Have latest ARC on a tablet, would like have it on this new desktop also.
Thanks for the help
Or you can press this button
More info here: https://synthiam.com/Support/Install/subscription-plans/license-cache
I want to load the latest ARC Pro on this brand new Win10 PC. So yeah, Its never had ARC on it before. Currently I use a Tablet for all my ARC, but now I want to have a second computer running ARC also. When I first tried to download, it would remind me that I am already subscribed but then still wanted a credit card. I understand you can have up to two sessions running? so I am assuming two pc's?
Your subscription is applicable for two computers. You have one computer registered at the moment. When loading the software, you will be prompted to add the new computer to the registration. At no point will there be a credit card displayed. It looks like DJ sent a link to pressing the refresh subscription cache button to force the registration. As per the instructions, make sure there's an internet connection.
The process of adding a second computer to your subscription is the same as it was for the first computer. Load the software, log in as the same registered email account, and add the computer when prompted.
*Remember, you must be logged in to ARC with the same email address as the subscription
Amy