One Onsite

2.9
72 reviews
10K+
Downloads
Content rating
Everyone
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About this app

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
Updated on
Dec 14, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Photos and videos
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

2.9
69 reviews
Cevin Ladd
January 9, 2025
I Use the app for facilities maintenance work. App crashes frequently. I have lost many service pictures that I'm required to upload to complete a service due to this issue. Unable to get them back as they're taken exclusively in the app and don't download to your phone. The app also crashes frequently in the background even when not in use and tanks battery life and processing power on my phone. All in all needs a SERIOUS overhaul. Exclusively use it because I'm required to for work. Terrible
7 people found this review helpful
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Matthew Betts
August 30, 2025
update: app works much better now. much easier to get approvals and to update work orders Something happened recently unable to upload photos from devices. Techs can no longer check out. Very irritating
4 people found this review helpful
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Lessen, LLC
November 26, 2024
Hi Matthew, We regret that you have not had a good experience using the One Onsite app. We are committed to hearing your feedback and improving the app. Please reach out to the affiliate marketing manager you work with and they will set up a call to address these issues. Looking forward to hearing from you soon. Sincerely, One Onsite Team
Greg Taylor
November 2, 2025
simple quick and easy app to use
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What’s new

add non-WO tasks;
improve non-reactive WO tasks;
enhance GPCA Workflow;
bug fix and performance improvement.

App support

About the developer
Lessen LLC
wenhui.luo@lessen.com
4800 N Scottsdale Rd Ste 5000 Scottsdale, AZ 85251 United States
+1 202-907-3922

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