One Onsite

2.9
61 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
Jul 31, 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
58 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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jester525 1
July 31, 2025
horrible. glitchy and slow at best. The majority of the updates solve one problem and create five new ones. trying to refresh the app or open the app takes anywhere from 1:00 to 5 minutes to complete. routing is poor it cannot read a map to save its life. Will send you 70 miles in one direction to come back 60 mi the opposite direction and then right back into the same area you started from. it is a constant stress creating app.
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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

What’s new

upgrade Asset module