# BIMx vs Cost Lenz

The clearest difference is rating: Cost Lenz at 5.0 against BIMx's 4.0. Cost Lenz also leads on update cadence (every 5 days vs every 6 weeks) and monetization model (free vs free with in-app purchases). BIMx's advantage is ratings volume (168 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Cost Lenz holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: BIMx has 168 ratings behind it against 1, so its average is the more settled of the two.

BIMx ships an update every 6 weeks, Cost Lenz every 5 days. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | BIMx | Cost Lenz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (168 ratings)](https://appshunter.io/ios/app/bimx/id452706864/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cost-lenz/id6811353238/reviews)** |
| Number of ratings | **168** | 1 |
| Positive reviews | 59.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 175 MB | 8 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Graphisoft SE](https://appshunter.io/developer/452706867) | [Cost Lenz](https://appshunter.io/developer/6811353240) |

## What reviewers say

### 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


### Cost Lenz

[App page](https://appshunter.io/ios/app/cost-lenz/id6811353238)

Easily track project costs, budgets, and invoices by importing spreadsheets, PDFs, or photos. Monitor contracts, change orders, and payments to stay on budget and avoid surprises. Get summary views for stakeholders and manage projects on the go.

**Highlights:** Import budgets from spreadsheets, PDFs, and photos, Log contracts and change orders, Track invoices and payments, View budgeted, committed, paid, and remaining costs, See over/under budget by line and category, Summary views for owners and lenders

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BIMx free?

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

### Is Cost Lenz free?

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

### Which has better reviews, BIMx or Cost Lenz?

Cost Lenz is rated higher. BIMx averages 4.0 out of 5 from 168 ratings, while Cost Lenz averages 5.0 from 1 ratings.

### Do BIMx or Cost Lenz have ads?

Neither BIMx nor Cost Lenz shows ads.

### Which is updated more often, BIMx or Cost Lenz?

BIMx ships an update every 6 weeks, and Cost Lenz every 5 days. Most recently, BIMx was updated on November 1, 2026 and Cost Lenz on October 29, 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.*