# Project Plan 365 vs CostX

The clearest difference is review sentiment: CostX at 100% against Project Plan 365's 21%. CostX also leads on rating (4.5 vs 3.3) and monetization model (free with in-app purchases vs subscription). Project Plan 365's advantage is ratings volume (41 vs 8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Project Plan 365 sells 1 in-app purchase, starting at $129.99 per year and CostX sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

CostX holds the better App Store score, 4.5 against 3.3. That said, the two scores are not equally well evidenced: Project Plan 365 has 41 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 21% of Project Plan 365's written reviews are positive against 100% of CostX's.

Project Plan 365 ships an update every 2 months, CostX every 4 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Project Plan 365 | CostX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (41 ratings)](https://appshunter.io/ios/app/project-plan-365/id742239541/reviews) | **[4.5 (8 ratings)](https://appshunter.io/ios/app/costx-work-and-cost-estimate/id1645196187/reviews)** |
| Number of ratings | **41** | 8 |
| Positive reviews | 20.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 95 MB | 14 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) | [皓 李](https://appshunter.io/developer/621375881) |

## What reviewers say

### Project Plan 365

[App page](https://appshunter.io/ios/app/project-plan-365/id742239541)

This app offers robust project planning and collaboration features for individuals and teams. It allows users to view, edit, and create Microsoft Project files on iOS devices, supporting various standard views and reports. Seamlessly integrate with cloud storage for easy access and sharing.

**Highlights:** MS Project file compatibility (MPP), Project planning and collaboration, Supports standard MS Project views, Cloud storage integration, Create and edit project plans, Critical path analysis and reports

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Editor | $129.99 | per year |


### CostX

[App page](https://appshunter.io/ios/app/costx-work-and-cost-estimate/id1645196187)

This app helps you break down and visualize projects, costs, and products. Create Work, Cost, and Product Breakdown Structures with customizable views and efficient data entry. Easily share and integrate information with other applications.

**Highlights:** Work, Cost, and Product Breakdown Structures (WBS, CBS, PBS), Multiple views: graphical, list, columns, Intuitive data entry and manipulation, Drag-and-drop functionality, Copy and paste support, Customizable attribute fields, Efficient information sharing

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is Project Plan 365 free?

Project Plan 365 is free to download, with in-app purchases available.

### Is CostX free?

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

### Which has better reviews, Project Plan 365 or CostX?

CostX is rated higher. Project Plan 365 averages 3.3 out of 5 from 41 ratings, while CostX averages 4.5 from 8 ratings.

### Do Project Plan 365 or CostX have ads?

Neither Project Plan 365 nor CostX shows ads.

### Which is updated more often, Project Plan 365 or CostX?

Project Plan 365 ships an update every 2 months, and CostX every 4 weeks. Most recently, Project Plan 365 was updated on November 6, 2026 and CostX on November 3, 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.*