One Onsite

One Onsite

One Onsite by Lessen

98 ratings
26 reviews
Free

Details

Released
September 6, 2022
Updated
November 2, 2026

Features

One Onsite screenshot #1 for iPhone
One Onsite screenshot #2 for iPhone
One Onsite screenshot #3 for iPhone
One Onsite screenshot #4 for iPhone
One Onsite screenshot #5 for iPhone
One Onsite screenshot #6 for iPhone
One Onsite screenshot #7 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

This app assists maintenance technicians in completing work orders efficiently. It provides essential job details, location guidance, and historical service information, requiring minimal training for users.

✓Guided work order completion
✓Informational job details and history
✓Location guidance
✓Offline and low connectivity performance
✓Faster upload times
✓Battery optimization
Show original description
+1

What's New in One Onsite

4.4.10

November 2, 2026

- Message clients directly on work orders, including photos (where enabled) - See a banner when your onsite increase is approved - Today’s calendar updates automatically when visits change - Goodman replacement proposals now go to your back office for approval - Fixed: troubleshooting follow-up questions now appear on added work orders, and checkout answers save correctly

More

User reviews

Horrible app

All these SMS apps have sucked and are incredibly cumbersome to use. By the way you do not need access to my microphone and you do not need access to my camera in order to complete the paperwork. Very invasive to privacy. You guys really need to have one of the Field people who actually use the app give direction on its development instead of people who live in an office and think they know how the workflow should go. It’s not how it works in the field
Show more

Service provider

In my opinion, this is a poorly designed app that did not take the actual technicians into consideration when designing the app. Example: NTE while on site does not actually exist. We are simply Service technicians and are not app designers. Way too hard to navigate

It never let me upload pictures

Doesn’t allow me to add pictures

Vendor Review

As a vendor this app is absolutely amazing. Lessen is head and shoulders above its competitors. Proud to be allied with them.

No error indication

Very hard to use

Developer apps

FAQ

What is One Onsite used for?

One Onsite is designed to help vendors and their technicians successfully complete facilities maintenance work orders. It provides job details, location guidance, and historical information to streamline the process.

Is One Onsite easy to use?

Yes, One Onsite is designed for ease of use with a seamless flow and simple language, focusing on one task at a time. This means technicians require minimal training to operate the app effectively.

Does One Onsite work offline?

Yes, One Onsite boasts improved performance in offline and low connectivity areas, ensuring technicians can continue working even without a stable internet connection.

What devices support One Onsite?

One Onsite is available for iPhone and iPad devices.

What is the age rating for One Onsite?

One Onsite has an age rating of 4+.

How often is One Onsite updated?

The latest version of One Onsite is 4.4.10, last updated on November 2, 2026. This indicates frequent updates to improve performance and features.

What is the user rating for One Onsite?

One Onsite has a user rating of 2.6 stars based on 98 ratings.

Does One Onsite have ads?

No, One Onsite does not contain advertisements.