Comparison

Obi® vs ArctechPro 3.x

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

Head to head
About

Obi®

Features
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Obi® is an end-to-end project delivery platform for the built environment which improves behaviours, making it easier to work together, track performance and demonstrate quality. The intuitive user interface, live data analytics, and clean reporting enables the project team to work smarter, creating a seamless integration between site and office. Obi® is a mobile site inspection / snagging tool used to raise & manage issues, snags and observations quickly and easily. Monitor progress, including photo evidence of close-out. This mobile application is to be used in conjunction with the Obi® platform.

About

ArctechPro 3.x

Features
Read full description

This app is an extension of our popular system for architects and engineers. It allows users to take images of inspections as they carry them out. The images & comments can then be uploaded directly to the relevant report and emailed right from the app.

Screenshots

Obi®4 screens
ArctechPro 3.x1 screens

Verdict

The call

The clearest difference is update cadence: Obi® at monthly against ArctechPro 3.x's every 4 months. ArctechPro 3.x's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

Obi® ships an update monthly, ArctechPro 3.x every 4 months. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 4 level
Obi® versus ArctechPro 3.x: the parameters behind the verdict, then further details
ParameterObi®ArctechPro 3.x
PriceFreeFree
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size13 MB9 MB
Age rating4+4+
Developeri3PT Certification Association LtdGeoff Needham

In-app purchases

None

Obi®

No in-app purchases

None

ArctechPro 3.x

No in-app purchases

Questions

Is Obi® free?
Obi® is free to download, with no in-app purchases.
Is ArctechPro 3.x free?
ArctechPro 3.x is free to download, with no in-app purchases.
Do Obi® or ArctechPro 3.x have ads?
Neither Obi® nor ArctechPro 3.x shows ads.
Which is updated more often, Obi® or ArctechPro 3.x?
Obi® ships an update monthly, and ArctechPro 3.x every 4 months. Most recently, Obi® was updated on October 12, 2026 and ArctechPro 3.x on October 13, 2026.

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