[Construction DX] 'Sakumiru' Surpasses 3,000 Official User Companies. Acceleration Driven by 'High-Speed Development' Catering to Field Needs

PLEX Co., Ltd. (Headquarters: Chuo-ku, Tokyo; CEO: Shun Kurosaki) announced that the number of companies officially using its construction-focused cloud service, 'Sakumiru,' surpassed 3,000 as of March 2026. This represents an increase of 1,000 companies in just five months since reaching the 2,000-company milestone in October 2025, supported by an 'overwhelming development speed' that delivers monthly, field-oriented feature updates.

Background of Growth: Obsession with 'Field Optimization' 'Sakumiru' is an all-in-one service connecting field, office, and management for small and medium-sized construction firms (5-50 employees). The expansion of features has broadened the range of industries and company sizes it can serve.

Over the past five months, the company has implemented major updates to resolve issues like 'document flexibility' and 'complex administrative tasks' that hindered the transition from Excel or paper-based operations, all while maintaining usability for those not tech-savvy. The 'Custom Layout Function for Estimates and Invoices,' released in March 2026, has been a decisive factor for adoption.

Three Key Evolutions in the Last 5 Months: 1. Dramatic Improvement in Document Flexibility: Users can now customize layouts, including company seals and logo placement, and adjust tax rounding to match existing business practices. 2. Advanced Management to Eliminate Administrative Rework: Features like 'Consolidated Invoicing' and one-click conversion from estimates to execution budgets have been implemented. 3. Expanded Mobile Experience: Official iOS and Android apps were released, supporting 'direct-to-site' work styles without returning to the office.

Comments from Sakumiru Business Manager Wataru Tokumi: 'The feedback that "we can keep using Sakumiru" from small and medium construction firms is our greatest motivation. We aim to become the standard for construction DX by respecting industry-specific customs and translating them into digital workflows without stress.'