ChatBIM 'ACIMUS' is now mobile-compatible. Create and edit BIM models, interact with AI, and generate architectural perspective drawings using generative AI from web browsers on smartphones, tablets, and PCs.

3 Key Points [Mobile BIM] View, edit, interact with AI, and generate perspective drawings of BIM models from smartphones and tablets. Usable in sales meetings and discussions on smartphones and tablets. [AI Pen Sketch] A new feature added to the already feature-rich 'Architectural Perspective Generation AI'. Simply draw on perspective images with your finger or pen, like 'Make the wall white' or 'Add greenery outside the window', and the AI will regenerate a new perspective in seconds. [3D Map] Simply set the address to project the actual cityscape in 3D. Confirm the relationship between the designed building and its surroundings, and generate perspective drawings with realistic backgrounds using the architectural perspective generation AI function.

ACIMUS Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo, CEO: Mitsutaka Kikuchi), a startup specializing in construction DX, has released three new features for its cloud service 'ACIMUS' (which allows BIM model creation through dialogue with generative AI): 'Mobile BIM (Mobile Compatibility)', 'AI Pen Sketch (Generate Perspective from Pen Memo)', and '3D Map'.

What is ChatBIM 'ACIMUS'? Logo of the cloud-based BIM ChatBIM 'ACIMUS', which allows BIM model creation and editing through dialogue with generative AI.

ChatBIM 'ACIMUS' is a cloud service that allows BIM model creation through dialogue with generative AI. No dedicated software installation is required. It operates solely through web browsers on PCs, smartphones, and tablets, enabling intuitive creation and utilization of BIM models not only for designers but also for sales representatives and those new to BIM. Our unique approach, 'LiteBIM', realizes an AI-native lightweight BIM specialized for the pre-design stages from planning to basic design (LOD100-300). With the addition of mobile compatibility, BIM model viewing, editing, and perspective generation are now possible not only on office PCs but also in sales meetings and discussions. Created BIM models can be exported in IFC format (2x3/4/4.3), ensuring seamless integration with existing BIM software like Revit and Archicad. We have received inquiries and implemented the service in over 230 companies (including general contractors, real estate companies, house builders, architectural firms, office design companies, and educational institutions). Official Website ■ Mobile BIM — Full BIM Utilization Anywhere, by Anyone 'Mobile BIM' refers to a BIM service that allows 3D creation, viewing, and editing of BIM models from smartphones and tablets. Furthermore, ACIMUS enables creation and editing of BIM models through dialogue with generative AI, as well as architectural perspective AI generation, even on mobile devices. ACIMUS has built a unique UI/UX with mobile compatibility in mind from the land utilization, proposal, and design stages, making BIM operations, previously confined to office PCs, now possible in sales meetings and discussions. While there are currently some functional limitations compared to PCs (such as export functions), the main features mentioned above are supported on mobile. We will continue to enhance and expand mobile compatibility features to realize BIM utilization regardless of location. Main Features of Mobile BIM ❶ Layout Switching According to Screen Orientation ACIMUS automatically detects the device type and screen orientation to switch to the optimal UI. In portrait mode, it maximizes the 3D canvas and uses a 'bottom sheet' method for operations swiped from the bottom of the screen. In landscape mode, it automatically switches to a layout similar to the PC version, allowing for an operation feel close to a desktop. Mobile BIM screen of ChatBIM 'ACIMUS'. Example of interacting with generative AI to operate BIM models in portrait mode (left), and operating with a layout similar to the PC version in landscape mode (right).

❷ Create and Edit Diverse BIM Objects with Your Fingertips Various BIM objects such as columns, walls, floors, ceilings, windows, doors, stairs, curtain walls, and pipes can be intuitively created, selected, and edited with tap and swipe operations using fingers or a stylus pen.

❸ Create and Edit BIM Models While Interacting with Chat AI The chat AI function, which allows real-time creation and editing of BIM models through Japanese text input like 'Add a window to this wall' or 'Place a chair in the living room', can be used as is on mobile. It also supports architectural law Q&A (Building Standards Act, City Planning Act, Fire Service Act).

Mobile BIM operation screen. Shows BIM object selection and editing with fingertips, and real-time creation operations via text input to chat AI.

❹ Walk Through the Building Interior with a Virtual Joystick A virtual joystick displayed on the screen allows for a first-person perspective experience of freely moving around inside the building. Spatial proposals to clients can be made on the spot from a smartphone or tablet.

Virtual joystick function on mobile. Allows first-person walkthrough within the model by operating the joystick on the smartphone screen.

AI Pen Sketch — Regenerate Perspective Drawings by Simply Writing on Them AI Pen Sketch (Generate Perspective from Pen Memo) is an additional feature newly added to ACIMUS's 'Architectural Perspective Generation AI function', which already boasts extensive capabilities. It allows users to directly draw (simple sketches, text, arrows, etc.) on generated perspective images or actual site photos taken with a mobile device, and the AI regenerates the perspective based on these handwritten instructions. ACIMUS provides a one-stop solution from BIM model creation to perspective generation and sketch modification.

AI Pen Sketch operation screen. When notes, sketches, or text are written on a generated architectural perspective image with a pen, the AI interprets the instructions and regenerates a new perspective in seconds.

Challenges Solved by This Feature Traditionally, requests for perspective modifications involved the following process: ❌ Traditional Workflow: Perspective confirmation → Emailing modification instructions in text → Designer interprets instructions → Generates revised version → Re-confirmation → Further revisions… (Several days per cycle)

With ACIMUS's AI Pen Sketch: ✅ ACIMUS Workflow: Write notes and sketches directly on the perspective → AI generates new perspective on the spot → Align completion image with client during sales meeting (Several minutes per cycle)

3D Map — Confirm BIM Models in Actual Cityscapes and Generate Realistic Background Perspectives The 3D Map function projects actual surrounding buildings, cityscapes, and terrain as photorealistic 3D models in space simply by setting an address. ACIMUS allows display of 3D maps on web browsers across PCs, smartphones, and tablets. 3D Map display. Actual cityscape can be projected as a photorealistic 3D model in space.

3D Map x Perspective Generation AI — Instantly Generate 'Realistic Perspectives of What Will Be Built There' When the 3D map is displayed, setting the camera angle and executing the perspective generation AI creates a realistic architectural perspective incorporating the surrounding actual buildings, cityscape, and natural environment in seconds. This allows for immediate generation of perspectives showing 'how it will look when built here' at the construction site and presenting them to the client on the spot. Operation screen for 3D Map x Architectural Perspective Generation AI. The AI can generate realistic architectural perspectives including the surrounding environment in seconds by setting the camera angle from a BIM model with an actual cityscape background.

Example of an exterior perspective image generated by 'ACIMUS' using 3D Map x Architectural Perspective Generation AI (Daytime)

Example of an exterior perspective image generated by 'ACIMUS' using 3D Map x Architectural Perspective Generation AI (Nighttime)

Why 'Mobile BIM' Now? — Three Backgrounds Changing Sales and Proposal Styles Background 1: The 2024 Problem in the Construction Industry — The Need to Improve 'Proposal Quality' Within Limited Time Starting April 1, 2024, the upper limits on overtime work under the revised Labor Standards Act will be fully applied to the construction industry. Mobile BIM, which can turn travel and waiting times into 'design and proposal time', directly contributes to increased productivity with limited personnel. Furthermore, with the Ministry of Land, Infrastructure, Transport and Tourism's 'BIM Drawing Review' scheduled to begin in April 2026, the use cases for BIM data are expected to expand further.

Background 2: 'Cannot Convey the Completion Image On the Spot' — A Common Major Challenge Across Many Industries General contractors, real estate companies, house builders, architectural firms, renovation companies, office design companies — the biggest common challenge for sales representatives across all industries is the inability to 'convey the completion image on the spot'. ・General Contractor Sales: 'Drawings alone don't convey the charm of the space in proposals to clients', 'Difficult to differentiate from competitors in bids.'

・Real Estate Sales: 'Want to show clients the completion image of vacant land or unfinished properties on the spot', 'Wasting time during travel.'

・House Builder Sales: 'Want to instantly show customers custom plans tailored to their requests in 3D during consultations at model homes.'

・Architectural Firms: 'Want to propose quickly to clients, but lack CAD/BIM operators', 'Proposal speed affects order acquisition.'

・Renovation Sales: 'Want to show the before-and-after image on-site to close the deal', 'Want sales staff without CAD skills to be able to propose.'

・Office Design: 'Want to quickly align specific images for layout change requests with clients at their location', 'Shorten the lead time from proposal to agreement.'

ACIMUS's mobile compatibility now allows these challenges to be solved not only on office PCs but also from smartphones and tablets during sales meetings and discussions. 3D proposals using BIM models, architectural perspective AI generation, and walkthroughs can be performed solely through a web browser, without the need for dedicated apps, CAD, or BIM skills.

Background 3: BIM Utilization is Evolving from 'Viewing' to 'Operation' Traditional mobile BIM viewers and construction management apps were limited to 'viewing' BIM models or 'adding information'. ACIMUS is the industry's first※ design-focused BIM solution with mobile compatibility that enables BIM model creation, editing, and perspective generation through dialogue with generative AI on mobile devices. ※According to our research (as of March 2026)

Comparison with Conventional BIM Software Comparison Item Existing BIM Software ChatBIM 'ACIMUS' Operating Environment High-spec PC required Works on standard business PCs, smartphones, and tablets Mobile Compatibility Viewing only or requires separate dedicated viewer app Creation, editing, AI interaction, and perspective generation of BIM models possible No dedicated app required BIM/CAD Operation Skills Requires specialized training Involves certain educational costs Usable immediately by those with no CAD/BIM experience Initial Costs (Implementation, dedicated PC, training, etc.) Significant costs incurred Almost none (Significant reduction) Operating Costs (Monthly usage fee) Approx. ¥30,000 - ¥60,000 From ¥12,000

Pricing Plans Base Fee Standard User License BIM model creation/editing, Chat AI, 3D Map, Architectural Law Q&A, etc. Monthly ¥12,000 / 1 license (excl. tax)

Architectural Perspective Generation AI Feature Option 100 Credits/Month Monthly ¥4,000 (excl. tax) 200 Credits/Month Monthly ¥6,000 (excl. tax) 300 Credits/Month (Standard) Monthly ¥8,000 (excl. tax) 600 Credits/Month Monthly ¥12,000 (excl. tax) 800 Credits/Month Monthly ¥18,000 (excl. tax)

・Generally, 1 credit allows for the generation of 1 perspective image. High-precision, high-resolution, and video generation require 2 or more credits.

・The 3D Map x AI Pen Sketch feature can be used with a User License + Perspective Option.

Frequently Asked Questions (FAQ) Q: Do I need to install a dedicated app to use Mobile BIM? A: No, it is not necessary. You can access ACIMUS and utilize BIM model viewing, creation, editing, AI interaction, and other functions simply by logging in from a web browser (Safari, Chrome, etc.) on your smartphone or tablet.

Q: What kind of operations can I perform on a smartphone? Can I do the same things as on a PC? A: You can perform almost the same operations on mobile as on a PC. This includes viewing/creating/editing 3D models, multi-selection/batch editing of objects, interacting with chat AI, generating perspective drawings, changing materials, placing furniture, etc.

Q: How accurately does AI Pen Sketch recognize handwriting? A: It recognizes handwritten text, rough sketches, and arrows. You can provide instructions in a natural sketching style, such as text instructions like 'Change the blinds to wood', pointing to the correction area with an arrow, or circling an area and writing 'Add a houseplant here'.

Q: Which regions does the 3D Map support? A: Currently, it supports areas within Japan.

Q: Are there any running costs associated with displaying the 3D Map? A: It is included in the standard license, so there are no additional running costs at this time.

Q: Can sales representatives with no experience in BIM or CAD operations use it? A: Yes, absolutely no prior BIM or CAD experience is required. ACIMUS allows you to create BIM models by simply giving instructions in Japanese via chat AI, such as 'Add a window to this wall'. We have also focused on developing a user-friendly and intuitive UI/UX, similar to a game.

Q: Can it be used for renovation proposals? A: Yes, it is effective for renovation proposals. During on-site surveys, you can open ACIMUS on your smartphone, take a photo of the existing site, and use the architectural perspective AI generation feature to create perspective images of the completed state, such as removing existing furniture or visualizing the finished look, on the spot.

Finally — The Future of Architecture and Construction Changed by 'BIM in Your Pocket' Bridging the gap between the office and the client's location, expanding the scope of BIM utilization from 'in front of the desk' to 'any situation' — ACIMUS's 'Mobile BIM x AI Pen Sketch x 3D Map' is a step towards transforming the very nature of sales and proposals in the construction industry. Previously, BIM was considered a 'tool for the design department'. ACIMUS is making BIM 'a weapon for sales' as well. ACIMUS Co., Ltd. is committed to further promoting construction DX through its unique approach of Generative AI x LiteBIM. Companies interested are welcome to apply for our free online information session. The session will include live demonstrations of actual operations and the architectural perspective generation AI. Apply for Online Information Session

Company Profile Company Name ACIMUS Co., Ltd. Representative Mitsutaka Kikuchi, Representative Director & CEO Established September 2024 Location Yamato Bldg. 405, 1-6-16 Kanda Izumi-cho, Chiyoda-ku, Tokyo URL https://www.acimus.com/

Contact Regarding This Matter Please contact us via one of the following methods: ・Inquiry Form

・contact@acimus.com

Reception Hours: Weekdays 10:00 AM - 7:00 PM

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  • Source: PR TIMES
  • Category: News