One Build by OTB

Simon Cariss Business iPhoneiPadiPod touch

One Build by OTB is a free Business app for iPhone and iPad by Simon Cariss. Requires iOS 15.1. Updated April 29, 2026.

Price: Free; on the App Store
Size: 62 MB; Age 4+
Updated: Apr 29; 2026 · v11

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About One Build by OTB

Join the Future of Construction Management. Efficiency is at the heart of One Build. Reduce delays and misunderstandings by keeping everyone on the same page. On-site or on the move, access your project’s full details from your smartphone or tablet.

What’s new

Version 11 · Updated April 29, 2026

Minor updates and improved offline support when mobile service is low.

App privacy

The developer, Simon Cariss, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

Diagnostics: Crash Data, Other Diagnostic Data
Contact Info: Name, Email Address
User Content: Emails or Text Messages, Photos or Videos, Other User Content

Used for: Analytics, Product Personalization, App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

Identifiers: User ID
Usage Data: Product Interaction

Used for: App Functionality

App details

One Build by OTB is a free Business app for iPhone, iPad and iPod touch, developed by Simon Cariss. It requires iOS 15.1 or later and is 62 MB to download. It was first released on June 25, 2024 and last updated on April 29, 2026.

Category: Business
Price: Free
Version: 11
Size: 62 MB
Requires: iOS 15.1 or later
Compatibility: iPhone, iPad, iPod touch
Languages: English
Age rating: 4+
Released: June 25, 2024
Last updated: April 29, 2026
Developer: Simon Cariss

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