Comparison

One Onsite vs CheckSammy Professional

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

One Onsite

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.

Highlights
  • Guided work order completion
  • Informational job details and history
  • Location guidance
  • Offline and low connectivity performance
  • Faster upload times
  • Battery optimization
Features
Read full description

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

About

CheckSammy Professional

Connect with clients seeking your professional services. This platform provides a network for skilled individuals to find and accept job opportunities that align with their expertise, enabling them to monetize their talents.

Highlights
  • Access a network of service providers
  • Find jobs matching your skills
  • Turn expertise into earnings
  • Receive a steady stream of opportunities
  • Connect with clients
Features
Read full description

Turn your expertise into earnings with CheckSammy. Join our network of trusted service providers and access a steady stream of jobs that match your skills.

Screenshots

One Onsite4 screens
CheckSammy Professional4 screens

Verdict

The call

The clearest difference is update cadence: CheckSammy Professional at every 5 days against One Onsite's every 6 weeks. One Onsite's advantage is review sentiment (23% vs 13%) and ratings volume (99 vs 17). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 2.5 for One Onsite against 2.5 for CheckSammy Professional. That said, the two scores are not equally well evidenced: One Onsite has 99 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 23% of One Onsite's written reviews are positive against 13% of CheckSammy Professional's.

UpkeepUpdate frequency

One Onsite ships an update every 6 weeks, CheckSammy Professional every 5 days. The most recent releases landed on November 7, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 7 level
One Onsite versus CheckSammy Professional: the parameters behind the verdict, then further details
ParameterOne OnsiteCheckSammy Professional
PriceFreeFree
Rating2.5 (99 ratings) — better2.5 (17 ratings)
Positive reviews23.1% of reviews — better12.5% of reviews
Number of ratings99 — better17
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.4
Further details — not scored
Size102 MB138 MB
Age rating4+4+
DeveloperSMS Assist, LLC.CheckSammy Technologies Inc.

Customer experience

One Onsite

All ratings98 ratings
Positive35.7%
Neutral4.1%
Negative60.2%
Written reviews26 reviews
Positive23.1%
Neutral3.8%
Negative73.1%

CheckSammy Professional

All ratings17 ratings
Positive35.3%
Neutral5.9%
Negative58.8%
Written reviews8 reviews
Positive12.5%
Neutral0.0%
Negative87.5%

In-app purchases

None

One Onsite

No in-app purchases

None

CheckSammy Professional

No in-app purchases

Questions

Is One Onsite free?
One Onsite is free to download, with no in-app purchases.
Is CheckSammy Professional free?
CheckSammy Professional is free to download, with no in-app purchases.
Which has better reviews, One Onsite or CheckSammy Professional?
One Onsite is rated higher. One Onsite averages 2.5 out of 5 from 99 ratings, while CheckSammy Professional averages 2.5 from 17 ratings.
Do One Onsite or CheckSammy Professional have ads?
Neither One Onsite nor CheckSammy Professional shows ads.
Which is updated more often, One Onsite or CheckSammy Professional?
One Onsite ships an update every 6 weeks, and CheckSammy Professional every 5 days. Most recently, One Onsite was updated on November 7, 2026 and CheckSammy Professional on November 9, 2026.

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