Comparison

iProject Viewer vs Dalux

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

Head to head
About

iProject Viewer

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
Read full description

New!! Create Gantt charts and edit/save existing MS Project Plans in MPP file format! Housatonic’s Project Viewer 365 for iOS allows you to open MS Project Plans from cloud locations like Google Drive. Dropbox, OneDrive, SharePoint Online, Box, Basecamp, URL Links and email attachments.

 Housatonic Project Viewer 365 for iOS is compatible with Microsoft Project (MPP file format) 2024, 2021, 2019, 2016, 2013, 2010, 2007, 2003 and earlier versions. The interface is intuitive making Project Viewer simple for the end users.

 Now Microsoft Project Plans look better than ever on your iOS. Free view-only MS Project views like Gantt chart, Task Sheet and Resource Sheet are available along with basic project plan sorting, filters, zooming and time scale viewing capabilities.

 Additional features can be enabled by subscribing to in-app-purchase packages: In-App Option 1: Advanced View Only Enable advanced sorting capabilities, apply additional filter options, customize time scale 
Access additional project views like Calendar View, Resource and Task Usage, View Network Diagram
 View Multiple Project Reports and Print Project Info to PDF or Paper
 This in-app purchase option is offered on a yearly (1 year) basis for a price of $19.99 USD per year. In-App Option 2: Standard Editor Create new Gantt charts and modify existing project schedules in the same intuitive way as MS Project. Save and Share your plans (MPP files) from any storage or cloud location on any iOS device. Works with, or as an alternative to Microsoft Project. This in-app purchase option is offered on a yearly (1 year) basis for a price of $129.99 USD per year. Payment will be charged to iTunes Account at confirmation of purchase Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase No cancellation of the current subscription is allowed during active subscription period Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms and Conditions: http://housatonic.com/terms.html Privacy Policy: http://housatonic.com/privacy.html

About

Dalux

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
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Dalux is supervision, quality assurance, safety inspection and snagging from land development to delivery. Supervision and project notes are documented with photos, red-lining, own standard texts and list values and located on drawings with GPS and user input. You will automatically receive an e-mail when the task status changes. Dalux is your tool to assess the construction situation. Get an overview of pending issues, progress and status per floor, construction or inspection area. The managed user permissions and rights removes any doubt about who is currently liable for each existing note or deficiency. Share tasks with your substitutes and collaborate. Also in case of illness or vacation. Also use Dalux for 1 and 5 year reviews. Mobile quality assurance during construction. - Supervision notes, snagging, site safety and receive checks. - Works offline - such as in a basement. - Ease of use saves time! Create checklists and reports in a simple and straightforward manner. - Unlimited number of users per project. - Elegant reports with your own logo. - Statistics and project overview on PC with many search options. - Used on large construction projects. - Used for renovation projects and building registration. - Full history assures nothing is deleted. Not even by accident. - Full support for iPad/iPhone and other mobile devices. - BIM, CAD, scanned drawings. Revit, IFC, DWG, JPG etc. - All discipline models are assembled from e.g. Revit.

Screenshots

iProject Viewer4 screens
Dalux4 screens

Verdict

The call

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.

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
iProject Viewer versus Dalux: the parameters behind the verdict, then further details
ParameteriProject ViewerDalux
PriceFreeFree
Rating3.7 (17 ratings)4.4 (5 ratings) — better
Positive reviews26.0% of reviews70.0% of reviews — better
Number of ratings17 — better5
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size95 MB337 MB
Age rating4+4+
DeveloperHousatonic.comDalux

Customer experience

iProject Viewer

All ratings17 ratings
Positive64.7%
Neutral5.9%
Negative29.4%
Written reviews50 reviews
Positive26.0%
Neutral16.0%
Negative58.0%

Dalux

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

In-app purchases

2 purchases

iProject Viewer

Subscriptions2
  • Advanced View-Only1 Month trial$19.991 Year
  • Standard Editor1 Month trial$129.991 Year
None

Dalux

No in-app purchases

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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