What's New in DC on Mobile?
VAS currently supports a standalone FeedComp mobile app and two versions of the herd management mobile app to connect you to PULSE data. The FeedComp mobile app and the latest version of the PULSE mobile app, DC on Mobile, are currently in user acceptance testing. Contact Us if you're interested in joining the testing efforts!
The original version of the PULSE mobile app, VAS Platform, remains available, but VAS plans to sunset it in most markets.

The VAS Platform (v1) mobile app was originally released in 2018 to connect VAS PULSE users to their herd while out on the farm. Since then, mobile technologies have come a long way, and we are currently developing a more robust and powerful DC on Mobile (v2) app!
Major enhancements include the following:
- Significantly improved stability and reliability based on a new app framework and the latest cloud-based technologies. This translates to fewer crashes and better support for new feature development going forward!
- Streamlined connection and data exchange with PULSE speeds up herd refreshes and helps to ensure you always have the latest data on your device.
- Optimized user interface makes adding events and completing tasks more intuitive. We've also added a dark mode for improved contrast and less drain on your battery!
- Improved support for iOS devices.
- Improved scanning speeds make completing worklist tasks even faster.
Review the Minimum Requirements on the VAS website before installing the mobile app on iOS and Android devices.
Read below to learn more about the latest features and improvements made to the DC on Mobile app and online help:
DC on Mobile Release v1.8 - June 2025
DC on Mobile v1.8 is now available! We continued to focus on bug fixes and performance improvements in this release, and we also added the following new enhancements:
- MyDC customers spoke and VAS listened! Making sure newborn calves receive a high-quality colostrum
Colostrum, the first milk produced by a cow after birth, is high in nutrients and antibodies that provide calves initial protection against disease. or replacer
Colostrum replacer is a natural or synthetic product that provides nutrients and antibodies to calves when maternal colostrum is unavailable or of poor quality. It's often used when calves don't nurse from their mother within a few hours of birth. is one of the most critical activities that support the long-term health and well-being of your herd. We added the COLOSTRUM event to make capturing and tracking your colostrum activities easier and more consistent. See COLOSTRUM Event (MyDC only) to learn more!
- You can now add custom tasks directly from the CowCard's Tasks tab! See Manage Animals (v2) to learn more!
Bug Fixes
Several bugs were squashed in this update. For a detailed list, please Contact Us.
Known Issues and Workarounds
- Workaround When adding events from the CowCard or from Worklists, pens may not be filtered to show only the pens defined for the event. Pens are filtered properly when adding events on the Events tab.
- Known Issue Events added to a Hospital List may no longer be displayed in the list after the animal is marked DONE.
- Known Issue When you select all pens, search for an animal, and Complete or Skip a task in Open Tasks, a sound may play more than once and the
Done tab may display.
- Known Issue The Bluetooth Low Energy (BLE) connection is not supported on RFID scanners in this release. Connect your devices with Bluetooth Classic until we are able to resolve this issue, but please note that iOS devices only support BLE connections on some scanners. See Tips for Using Bluetooth Low Energy (BLE) to learn more.
- Known Issue You may notice slower RFID scanning speeds in this release, which we're working to resolve as soon as possible.
- Known Issue When you Undo an animal on the
Done tab in Offline Mode, return to the
To Do tab for the worklist, add an event, and tap Mark as Done, the button may not change to Undo. When this occurs, do not tap Mark as Done again, as the animal was actually marked as done and moved to the
Done tab. Tapping the button again will cause an error to display.
- Workaround If you tap
Refresh Lists at the top of the Tasks screen and navigate away from the screen before all worklists finish downloading, the refresh may fail. Close and reopen the app, and then refresh your worklists again to resolve the issue.
- Known Issue The date range filter was removed from the Transaction Log screen and will return a future release.
- Known Issue Events with incomplete information may be sent to PULSE when you tap
Process All Changes at the top of a worklist. VAS is working to resolve this issue in a future release, but we recommend always completing all required information when entering events.
- Known Issue Pen validation changes made in offline mode are not shown in the Transaction Log until you are back online and your changes sync to PULSE.
- Workaround If you enter an event on a vet list, undo it, and then attempt to add another event, the vet list changes cannot be processed and sent to PULSE. To avoid this issue, use one of the following workarounds:
- Use the Events screen to enter the events in the DC on Mobile (v2) app. See Events to learn how.
- Manually add the event directly in PULSE. See Enter Events (v2) to learn how.
- Use the VAS Platform (v1) mobile app to enter vet list events until a hotfix is released for the DC on Mobile (v2) app. See Create a New Event or Edit an Existing One to learn how.
- Workaround On iOS devices, an unsuccessful pairing error may occur when you attempt connection to an RFID scanner after switching dairies. Close and reopen the app to resolve the issue.
- Workaround In Events or Tasks, the RFID Scanner toggle may be on when your RFID scanner is not actually connected. Close and reopen the app, and then reconnect to the RFID scanner to resolve the issue. See Connect Your RFID Scanner to learn how.
- Known Issue If you delete an event and then add a new event for an animal, the deleted event is still displayed on the
Done tab for the worklist even though it was deleted. When you send your worklist data, the deleted event will not be sent to PULSE.
- Known Issue When you open a newly added worklist for the first time, the app might crash. The app will not crash the next time you open the worklist.
- Known Issue MyDC ONLY When you process Open Tasks in Online Mode, the app indicates how many animals need to be processed. However, when you process Open Tasks in Offline Mode, the indicator may not be displayed even if animals need to be processed.
- Workaround If you work with multiple users and/or dairies on the same device, the app may show data for the previously viewed user or dairy. As a general rule, VAS recommends always refreshing herd data after switching to a different user or dairy. See Refresh Herd Data in Online Mode to learn how.
- Known Issue When you pick an event from a worklist on an iOS device, harmless duplicate event warnings may be displayed.
- Workaround If you turn on Airplane Mode on your iOS device, Bluetooth is turned off automatically. You can turn Bluetooth back on in settings, and it will stay on until you turn it off or toggle Airplane Mode off and on again.
- Workaround If you complete a pen correction for an animal, the app updates today's open worklists and changes the pen information for the animal to the corrected pen. The correction won't apply to yesterday's or older worklists, so you need to refresh your worklists to see the updates. See Refresh Herd Data in Online Mode to learn how.
Need more help? Expand the sections below to learn more:

Need more help? Use one of the methods below to contact VAS Support! |
|
---|---|
Live Chat |
Chat directly with a product support team member directly in PULSE. At the bottom right corner of any PULSE page, click the Chat button |
Text Message |
Text 559-686-9496. Standard text messaging rates apply. |
Phone |
Call 559-686-9496 or the toll-free phone number 888-225-6753. |
|
Email support@vas.com. |
Web |
For the most up-to-date VAS Support contact information, visit the VAS Support page. |

Expand the information below to contact VAS Support in a specific country:

- VAS customers in Argentina: Contact us at soporte.arg@vas.com or (9) 2474 49-4600.
- All other customers: Contact us at the VAS Support page.

- VAS customers in Brazil: Contact us at suporte@vasbrasil.com or (34) 99842-6349.
- All other customers: Contact us at the VAS Support page.

- VAS customers in Mexico: Contact us at soporte@vas.com or (52) 871-323-9001.
- All other customers: Contact us at the VAS Support page.

DC on Mobile Release v1.7 - October 2024
DC on Mobile v1.7 is now available! We continued to focus on RFID scanner performance in this release, and we expanded the following enhancements and improvements:
- RFID scanning is now even faster! See RFID Scanners (v2) to learn more about using scanners.
- The new Transaction Log feature now includes search, filter, and sort options to help you quickly find transactions you've completed in the past 14 days. See Transaction Log (v2) to learn more!
- When you scan an animal in a pen, the SCPEN
Last scan pen ID
Identifier is also included in the Transaction Log. This provides a handy visual cue while monitoring the changes for a specific pen.
- We removed the sign-up feature from the log in flow. If you want to sign up new users, see Invite a User to Your Dairy. To deactivate a user, see Remove a Dairy User.
Bug Fixes
Several bugs were squashed in this update. For a detailed list, please Contact Us.
DC on Mobile Release v1.6 - September 2024
We continued to focus on feature parity with the original version of the app (v1), and also included the following enhancements and improvements:
- DC on Mobile now keeps track of some user actions. A new Transaction Log feature is now available on the More menu! Use this feature to view a list of transactions you've complete in the app over the last 14 days. See Transaction Log (v2) to get started!
- A new My Account feature was added to the More menu. Use this new feature to update how often DC on Mobile requests your PIN when logging in to the app. See My Account to learn more!
- We continued to improve RFID scanner performance in this release and also included an RFID option when adding an event. See RFID Scanners (v2) to learn more about working with scanners!
- Worklists in DC on Mobile now support the new task types in PULSE, and you now have the ability to view and mark these new task types as done.
Bug Fixes
- When a tag assigned to an animal is scanned on the Events tab, DC on Mobile now adds the animal to the event.
- Several bugs were squashed in this update. For a detailed list, please Contact Us.
DC on Mobile Release v1.5 - June 2024
DC on Mobile v1.5 is now available to our beta testers! We are continuing to focus on feature parity with the original version of the app (v1), as well as the following enhancements and improvements:
- BLE scanners are now supported. See Tips for Using Bluetooth Low Energy (BLE) Scanners to learn more!
- We've improved RFID scanner performance and added the RFID option to the Tasks tab. See RFID Scanners (v2) to learn more about working with scanners!
- The app now includes an online help link. See DC on Mobile (v2) to check it out!
- The ABORT event now includes validation for the date and only displays the Lactation Cycle field if the animal is eligible to start a new lactation cycle.
- Open Tasks sounds are now enabled to make processing your lists quicker and more intuitive.
- The app now supports adding a Donor that is not in the herd.
- CowCard data from PULSE now automatically updates when your device is online.
- The app now uses a standard event EDAY
Event day value: the local dairy time at midnight in UTC
Coordinated Universal Time, also known as Greenwich Mean Time (GMT).
- Worklist updates sent to PULSE now include the Pen ID.
- The app also includes improved localization for Brazilian Portuguese, transaction log enhancements, and other requested improvements. We've also resolved multiple functionality issues.
Known Issues
- When adding FRESH events, if CBRD
Cattle breed (calf breed) is included in the list of items to prompt for CALF, the value will not be accepted. As a workaround, do not include CBRD in your Items to be Prompted for New Calves. You can then add CBRD from web by opening the calf from the Animals List and editing its details.