Comparison

BIMx vs ACTA Obra

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

Head to head
About

BIMx

Explore and collaborate on architectural BIM projects with interactive 3D models and linked documentation. Visualize designs, access BIM data, and streamline communication between the construction site and office.

Highlights
  • Interactive 2D & 3D BIM model exploration
  • Linked 2D documentation and 3D views
  • Access BIM element data
  • On-site collaboration tools
  • Game-like 3D navigation
  • Real-time 3D cutaways
  • Measure in 3D and 2D
Read full description

Graphisoft’s BIMx is an interactive app for exploring BIM projects and linked documentation sets created in Archicad, MEP Designer, and DDScad. Please download to visualize or collaborate on architectural design projects on your mobile device(s). BIMx offers professional building visualization with game-like navigation to explore and visualize architectural projects. BIMx features the ‘BIMx hyper-model’ – allowing non-design professionals to explore and fully understand architectural design intent, view project deliverables, and access element-level BIM data. BIMx links the 3D model with the relevant 2D documentation layouts, providing a seamless way to view the 3D cutaway model in the context of a 2D layout — and vice versa. BIMx connects the construction site with the architect’s office for streamlined collaboration. Real-time model cut-throughs, in-context measuring, and project markups in the model context make BIMx your best on-site BIM companion. Drive the design narrative on the building site for fast, specific client feedback. Features: • Hyperlinked 2D & 3D views with interactive markers • Trace 2D drawings on 3D with animation • Access project and building component-related BIM information • Superfast 2D documentation viewer • Game-like 3D navigation • Gravity & Egress recognition • Option to access a Hyper-model element from outside of the app • Google Cardboard VR support on iPhones • Real-time 3D cutaway • Cut Plane Color Picker • Shading options • Shadow casting • Sun positioning by date and time • Measure in 3D and on 2D layouts • Explore 3D models of any size thanks to the streaming 3D engine • Save Favorites • Create compelling presentations • Print support, PDF export • Keyboard, mouse, and gamepad support BIMx Pro features, available with Graphisoft account-based licensing: • Issue creation – BCF-based documentation revisioning • Hide 3D elements and control Layer visibility in the virtual model • Customizable Cut Plane Explore the BIMx Pro features with the built-in demo model. Joining BIMcloud in Hyper-models published from Teamwork projects unlocks messaging and Pro features. View our Terms of Use: https://graphisoft.com/legal/terms-of-use/bimx-ios and Privacy Policy: https://graphisoft.com/legal/privacy-policy Send your comments and suggestions to bimx@graphisoft.com!

About

ACTA Obra

Read full description

ACTA is an app designed for architects, engineers, and construction professionals who need to create site visit reports quickly, clearly, and professionally. It allows you to record site visits directly from your mobile device, including photos, observations, participating parties, and all relevant project data. All the information is automatically organized into documents ready to share. With ACTA you can: - Create site visit reports from your mobile device, saving significant time in the office - Add photos and notes during site visits - Record participants, incidents, and progress - Maintain a history of ongoing projects - Generate clear and professional documents - Easily share the reports in PDF format with your team or clients ACTA is designed to simplify your daily work on construction sites, reduce errors, and improve communication among all project stakeholders.

Screenshots

BIMx4 screens
ACTA Obra4 screens

Verdict

The call

The clearest difference is update cadence: ACTA Obra at every 3 weeks against BIMx's every 5 weeks. 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

BIMx ships an update every 5 weeks, ACTA Obra every 3 weeks. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
BIMx versus ACTA Obra: the parameters behind the verdict, then further details
ParameterBIMxACTA Obra
PriceFreeFree
Rating4.0 (167 ratings) — better—
Positive reviews59.8% of reviews—
Number of ratings167 — better—
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size175 MB57 MB
Age rating4+4+
DeveloperGraphisoft SESKY Proyectos Técnicos SL

Bugs and requests

BIMx

Reported bugs

3 issues
  • Issues with downloading and opening models
  • Compatibility problems with newer iOS versions
  • Inconsistent rendering and color issues

Requested features

4 requests
  • Ability to annotate and markup models
  • Support for more CAD file formats beyond ArchiCAD
  • Improved camera controls and navigation
  • Integration with desktop ArchiCAD software

ACTA Obra

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

BIMx

No in-app purchases

None

ACTA Obra

No in-app purchases

Questions

Is BIMx free?
BIMx is free to download, with no in-app purchases.
Is ACTA Obra free?
ACTA Obra is free to download, with no in-app purchases.
Do BIMx or ACTA Obra have ads?
Neither BIMx nor ACTA Obra shows ads.
Which is updated more often, BIMx or ACTA Obra?
BIMx ships an update every 5 weeks, and ACTA Obra every 3 weeks. Most recently, BIMx was updated on October 16, 2026 and ACTA Obra on October 11, 2026.

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