# A vs BIMx

The clearest difference is price: BIMx at Free against A's $4.99. BIMx also leads on review sentiment (60% vs 15%) and rating (4.0 vs 2.3). A's advantage is chart position (#191 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

BIMx is free to download; A costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BIMx holds the better App Store score, 4.0 against 2.3. That said, the two scores are not equally well evidenced: BIMx has 167 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 15% of A's written reviews are positive against 60% of BIMx's.

A ships an update every 6 weeks, BIMx every 5 weeks. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | A | BIMx |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/a-truss/id412684176/reviews) | **[4.0 (167 ratings)](https://appshunter.io/ios/app/bimx/id452706864/reviews)** |
| Number of ratings | 3 | **167** |
| Positive reviews | 15.0% of reviews | **59.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#191** | — |
| Size | 47 MB | 175 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jutarus Ratanasethakul](https://appshunter.io/developer/1454380236) | [Graphisoft SE](https://appshunter.io/developer/452706867) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-truss/id412684176)

**Currently charting:** #191 Top Paid · Productivity (US App Store)

Analyze 2D truss problems quickly on your mobile device. Create standard or custom truss structures, manage material properties, and generate PDF reports with flexible unit options.

**Highlights:** Standard truss templates (18 types), Custom truss creation, Flexible unit system, Built-in material library, PDF reporting and email export

**In-app purchases:** none


### BIMx

[App page](https://appshunter.io/ios/app/bimx/id452706864)

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

**In-app purchases:** none

**What reviewers like**

- 💡 Excellent BIM viewer for ArchiCAD models
- 👍 Helpful for client communication and presentations
- 🚀 Smooth and fast 3D navigation
- 🔍 Useful for on-site model viewing and collaboration

**What reviewers complain about**

- 🐛 Occasional crashes and glitches
- 🤔 Confusing user interface for beginners
- 🔒 Requires Graphisoft account and login
- 💰 Paid subscription model after free trial

**Reported bugs**

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

**Requested features**

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


## Frequently asked questions

### Is A free?

A costs $4.99, with no in-app purchases.

### Is BIMx free?

BIMx is free to download, with no in-app purchases.

### Which has better reviews, A or BIMx?

BIMx is rated higher. A averages 2.3 out of 5 from 3 ratings, while BIMx averages 4.0 from 167 ratings.

### Do A or BIMx have ads?

Neither A nor BIMx shows ads.

### Which is updated more often, A or BIMx?

A ships an update every 6 weeks, and BIMx every 5 weeks. Most recently, A was updated on September 10, 2026 and BIMx on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*