About One Onsite
One Onsite by Lessen helps vendors and their technicians complete their facilities maintenance work orders successfully while collecting valuable information along the way. With One Onsite, technicians can see the work...
One Onsite by Lessen helps vendors and their technicians complete their facilities maintenance work orders successfully while collecting valuable information along the way.
With One Onsite, technicians can see the work they need to do for the day, read through relevant information around the issue, location and historical work done while effectively executing their work on-site with minimal disruption.
Some of the key features around this app include:
· Guided – With its seamless flow, simple language and focus on one task at a time, One Onsite is simple for the technicians to understand, and they require minimal training to use the app
· Informational – One Onsite provides information and photos around the work order, guides the technician to the location that they need to visit and provides relevant historical service information. It also helps the technicians understand what information needs to be provided to their back office based on the trade
· Efficient – One Onsite boasts of a vastly improved tech stack from its predecessor with better performance in offline and low connectivity areas, faster upload times and greater battery optimization
Previous Versions
Here you can find the changelog of One Onsite since it was posted on our website on 2024-11-26 20:17:32.
The latest version is 4.4.6 and it was updated on 2026-06-11 01:55:50. See below the changes in each version.
One Onsite version 4.4.6
Updated At: 2026-05-08
Changes: - This release improves technician efficiency and app reliability with faster performance and more reliable notifications.
- Scheduling and task creation have been streamlined to support complex jobs.
- Technicians can now upload videos and use custom photo labels for better documentation.
- Plumbing and HVAC workflows are enhanced with smarter data entry and improved visual cues.
- Resident contact access has been improved for better on-site coordination, creating a smoother field experience.
One Onsite version 4.4.5
Updated At: 2026-03-20
Changes: Enhanced non-reactive task configuration, including dropdowns and unique links for air filter tasks.
Improved multi-asset replacement with bulk deactivation, duplicate prevention, and validation checks.
Added plumbing PM workflows for water heater and general equipment inspection.
Resolved work order issues: status update bug, step display, deferred access, and missed recurring rescheduling.
Optimized photo compression and streamlined asset creation for improved efficiency.
One Onsite version 4.4.4
Updated At: 2026-01-30
Changes: Project WO schedule cards now support attachments .
Optimized login experience; the app now remembers username and password.
The default module on login has been enhanced.
Bug fix and performance improvement.
One Onsite version 4.4.3
Updated At: 2025-12-14
Changes: add non-WO tasks;
improve non-reactive WO tasks;
enhance GPCA Workflow;
bug fix and performance improvement.
One Onsite version 4.4.2
Updated At: 2025-11-16
Changes: add sign in methods w/ Face ID & fingerprint;
enhance PDF Viewing Experience;
optimize workflows w/ asset replacement, client-specific questions, vendor badges;
bug fix and performance improvements.
One Onsite version 4.4.1
Updated At: 2025-10-23
Changes: optimize work order handling and access info;
update GPCA checks and questions;
enhance push notifications;
AM calendar view now shows previous services;
bug fixes and performance improvements.
One Onsite version 4.3.22
Updated At: 2025-07-31
Changes: upgrade Asset module
One Onsite version 4.3.21
Updated At: 2025-07-16
Changes: roll back to 4.3.18
One Onsite version 4.3.18
Updated At: 2025-05-13
Changes: add previous services on calendar;
add location info for interior & recurring WO;
Log attachments and questions offline;
improve workflow - check in/out, PM, line item;
bug fixes and performance improvements.
One Onsite version 4.3.17
Updated At: 2025-04-24
Changes: bug fixes and performance improvements.
Disclaimer
Official Google Play Link
We do not host One Onsite on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
The Google Play link for One Onsite is provided to you by apps112.com without any warranties, representations or guarantees of any kind, so access it at your own risk.
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