# iProject Viewer vs Project Office X

The clearest difference is rating: iProject Viewer at 3.7 against Project Office X's 1.0. iProject Viewer also leads on ratings volume (17 vs 2). Project Office X's advantage is review sentiment (50% vs 26%) and update cadence (monthly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. iProject Viewer sells 2 in-app purchases, starting at $19.99 per year and Project Office X sells 13 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

iProject Viewer holds the better App Store score, 3.7 against 1.0. That said, the two scores are not equally well evidenced: iProject Viewer has 17 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 26% of iProject Viewer's written reviews are positive against 50% of Project Office X's, so the app with the better star average is not the one people write more warmly about.

iProject Viewer ships an update every 3 months, Project Office X monthly. The most recent releases landed on August 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | iProject Viewer | Project Office X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (17 ratings)](https://appshunter.io/ios/app/iproject-viewer/id463199295/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/project-office-x-gantt-chart/id1639565811/reviews) |
| Number of ratings | **17** | 2 |
| Positive reviews | 26.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 95 MB | 34 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Housatonic.com](https://appshunter.io/developer/463199298) | [DK CONSULTING, TOV](https://appshunter.io/developer/1021572765) |

## 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 |


### Project Office X

[App page](https://appshunter.io/ios/app/project-office-x-gantt-chart/id1639565811)

Manage multiple projects efficiently with a full-featured tool based on the Gantt method. Visualize timelines, assign resources, track progress, and identify potential bottlenecks. Offers a free trial and a preview mode after expiration.

**Highlights:** Gantt chart view, Outline/Table view, Resource and base calendars, Resource management, Multiple baselines, Critical path analysis, Project and report sharing

**Features:** Family Sharing, Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| macOS Standard Monthly | $4.99 | per month |
| iOS Standard Monthly | $4.99 | per month |
| macOS + iOS Standard Monthly | $7.49 | per month |
| macOS Pro Monthly | $9.99 | per month |
| iOS Pro Monthly | $9.99 | per month |
| macOS + iOS Pro Monthly | $14.99 | per month |
| macOS Standard Yearly | $47.99 | per year |
| iOS Standard Yearly | $59.99 | per year |
| macOS + iOS Standard Yearly | $74.99 | per year |
| macOS Pro Yearly | $95.99 | per year |
| iOS Pro Yearly | $95.99 | per year |
| macOS + iOS Pro Yearly | $149.99 | per year |
| Free Trial | Free | one-time |


## Frequently asked questions

### Is iProject Viewer free?

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

### Is Project Office X free?

Project Office X is free to download, with in-app purchases available.

### Which has better reviews, iProject Viewer or Project Office X?

iProject Viewer is rated higher. iProject Viewer averages 3.7 out of 5 from 17 ratings, while Project Office X averages 1.0 from 2 ratings.

### Do iProject Viewer or Project Office X have ads?

Neither iProject Viewer nor Project Office X shows ads.

### Which is updated more often, iProject Viewer or Project Office X?

iProject Viewer ships an update every 3 months, and Project Office X monthly. Most recently, iProject Viewer was updated on August 24, 2026 and Project Office X on September 10, 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.*