# iProject Viewer vs Dalux

The clearest difference is review sentiment: Dalux at 70% against iProject Viewer's 26%. Dalux also leads on rating (4.4 vs 3.7) and in-app purchases (none vs 2). iProject Viewer's advantage is ratings volume (17 vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. iProject Viewer sells 2 in-app purchases, starting at $19.99 per year. Dalux asks for nothing beyond the download.

Dalux holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 17 and 5 respectively. Written reviews point the same way: 26% of iProject Viewer's written reviews are positive against 70% of Dalux's.

iProject Viewer ships an update every 3 months, Dalux fortnightly. The most recent releases landed on August 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | iProject Viewer | Dalux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (17 ratings)](https://appshunter.io/ios/app/iproject-viewer/id463199295/reviews) | **[4.4 (5 ratings)](https://appshunter.io/ios/app/dalux/id504561520/reviews)** |
| Number of ratings | **17** | 5 |
| Positive reviews | 26.0% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 95 MB | 337 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Housatonic.com](https://appshunter.io/developer/463199298) | [Dalux](https://appshunter.io/developer/504561523) |

## What reviewers say

### iProject Viewer

[App page](https://appshunter.io/ios/app/iproject-viewer/id463199295)

View, edit, and create Microsoft Project plans on your iOS device. Access files from cloud storage and email, with advanced editing and viewing options available through in-app purchases.

**Highlights:** Open MS Project files from cloud storage, Create new Gantt charts, Edit and save existing MS Project plans, View Gantt, Task, and Resource Sheets, Advanced sorting and filtering, Network Diagram view, Print project info to PDF

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced View-Only | $19.99 | per year |
| Standard Editor | $129.99 | per year |


### Dalux

[App page](https://appshunter.io/ios/app/dalux/id504561520)

Streamline construction project management with tools for supervision, quality assurance, and safety inspections. Document issues with photos, red-lining, and GPS-located notes on drawings. Collaborate with team members and generate elegant reports with your own logo.

**Highlights:** Supervision, quality assurance, and safety inspections, Document issues with photos and GPS-located notes, Offline functionality, Create checklists and reports easily, Unlimited users per project, Elegant reports with custom logo, BIM and CAD drawing support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iProject Viewer free?

iProject Viewer is free to download, with in-app purchases available.

### Is Dalux free?

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

### Which has better reviews, iProject Viewer or Dalux?

Dalux is rated higher. iProject Viewer averages 3.7 out of 5 from 17 ratings, while Dalux averages 4.4 from 5 ratings.

### Do iProject Viewer or Dalux have ads?

Neither iProject Viewer nor Dalux shows ads.

### Which is updated more often, iProject Viewer or Dalux?

iProject Viewer ships an update every 3 months, and Dalux fortnightly. Most recently, iProject Viewer was updated on August 24, 2026 and Dalux on September 22, 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.*