Comparison

iProject Viewer vs PRO2 (Project Professional)

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

PRO2 (Project Professional)

Features
Read full description

PRO2 is an all-in-one mobile platform for field documentation, ticket management, and real-time project coordination. Built to work seamlessly with the PRO2 Web Platform, it keeps your team connected, organized, and in control—whether on-site or working remotely. With PRO2, you can: • Pin photos, notes, and updates to exact locations on your project drawings and floor plans • Capture site conditions in full 360° and attach them to any point on the plan • Create, assign, track, and close tickets directly from the field • Manage tasks, workflows, priorities, and progress from one centralized platform • Review, approve, and sign off on documents and workflow steps on the go • Sync every update to the cloud instantly for real-time access and team collaboration PRO2 simplifies field operations, improves accountability, and helps projects move forward faster and more efficiently. Stay connected. Stay organized. Take control of your site operations—anytime, anywhere.

Screenshots

iProject Viewer4 screens
PRO2 (Project Professional)4 screens

Verdict

The call

The clearest difference is in-app purchases: PRO2 (Project Professional) at none against iProject Viewer's 2. PRO2 (Project Professional) also leads on update cadence (monthly vs every 3 months). 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. PRO2 (Project Professional) asks for nothing beyond the download.

UpkeepUpdate frequency

iProject Viewer ships an update every 3 months, PRO2 (Project Professional) monthly. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
iProject Viewer versus PRO2 (Project Professional): the parameters behind the verdict, then further details
ParameteriProject ViewerPRO2 (Project Professional)
PriceFreeFree
Rating3.7 (17 ratings) — better—
Positive reviews25.5% of reviews—
Number of ratings17 — better—
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size95 MB175 MB
Age rating4+4+
DeveloperHousatonic.comPhinexes

In-app purchases

2 purchases

iProject Viewer

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

PRO2 (Project Professional)

No in-app purchases

Questions

Is iProject Viewer free?
iProject Viewer is free to download, with in-app purchases available.
Is PRO2 (Project Professional) free?
PRO2 (Project Professional) is free to download, with no in-app purchases.
Do iProject Viewer or PRO2 (Project Professional) have ads?
Neither iProject Viewer nor PRO2 (Project Professional) shows ads.
Which is updated more often, iProject Viewer or PRO2 (Project Professional)?
iProject Viewer ships an update every 3 months, and PRO2 (Project Professional) monthly. Most recently, iProject Viewer was updated on October 12, 2026 and PRO2 (Project Professional) on October 2, 2026.

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