Comparison

PIRS vs UDiTH

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

Head to head
About

PIRS

Features
Read full description

'PIRS:Site' offers the perfect offline solution to access and manage your project documents and important correspondence. Simply synchronize your project data to your device and have the latest revisions and up-to-date information at hand anywhere, anytime, regardless of an available internet connection. As additional great feature, the 'PIRS:Site' download manager allows you to download every attached file directly to your device. Working with eventually outdated drawings on site or fighting with large paper files is therefore no longer an issue. You can even add your annotated documents, pictures and videos directly on site and upload all new files with the next synchronization. Working with PIRS, our project based document and correspondence management system, you are already able to easily manage and share all documents and information, sent and received from external or internal project members, suppliers or customers. As an extension of 'PIRS', 'PIRS:Site' allows you to stay on top of your project even when you have no internet connection or access to your company servers."

About

UDiTH

Features
Read full description

UDiTH App โ€“ Universal Digital Twin Hub UDiTH App is a mobile application that provides unified access to digital twin content for industrial assets. It connects visual representations with structured asset data and related information, enabling users to understand complex systems in context. Instead of focusing on standalone model viewing, UDiTH is designed as a central gateway to integrated asset information, supporting use cases such as reviews, inspections, coordination, and decision-making on the go. The app delivers a consistent mobile experience for exploring digital twin content across engineering, construction, and operations environments. Key features - Mobile access to integrated digital twin data - Visual context combined with asset information - Optimized for large industrial environments - Designed for collaborative and cross-disciplinary use The UDiTH App is part of the Universal Digital Twin Hub ecosystem and extends digital twin capabilities to iPhone and iPad. For more information, visit www.caxperts.com or contact info@caxperts.com.

Screenshots

PIRS4 screens
UDiTH4 screens

Verdict

The call

The clearest difference is update cadence: UDiTH at monthly against PIRS's every 3 months. PIRS's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

PIRS ships an update every 3 months, UDiTH monthly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard2 real differences ยท 4 level
PIRS versus UDiTH: the parameters behind the verdict, then further details
ParameterPIRSUDiTH
PriceFreeFree
Update frequencyEvery 3 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 โ€” better15.0
Further details โ€” not scored
Size55 MB243 MB
Age rating4+4+
DeveloperSOBIS Software GmbHCAXperts GmbH

In-app purchases

None

PIRS

No in-app purchases

None

UDiTH

No in-app purchases

Questions

Is PIRS free?
PIRS is free to download, with no in-app purchases.
Is UDiTH free?
UDiTH is free to download, with no in-app purchases.
Do PIRS or UDiTH have ads?
Neither PIRS nor UDiTH shows ads.
Which is updated more often, PIRS or UDiTH?
PIRS ships an update every 3 months, and UDiTH monthly. Most recently, PIRS was updated on October 26, 2026 and UDiTH on October 28, 2026.

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