# ProjectKiller vs MPP File Viewer

The clearest difference is in-app purchases: ProjectKiller at none against MPP File Viewer's 4. MPP File Viewer's advantage is update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MPP File Viewer sells 4 in-app purchases, starting at $5.99 per month. ProjectKiller asks for nothing beyond the download.

ProjectKiller ships an update every 2 weeks, MPP File Viewer every 6 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ProjectKiller | MPP File Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mpp-file-viewer-gantt-chart/id6799043030/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [JACKWAGON SURFERS LLC](https://appshunter.io/developer/1041753990) | [EUTOPIX LABS](https://appshunter.io/developer/1896294696) |

## What reviewers say

### ProjectKiller

[App page](https://appshunter.io/ios/app/projectkiller-mpp-editor/id6796546956)

**Features:** Vision Pro support

**In-app purchases:** none


### MPP File Viewer

[App page](https://appshunter.io/ios/app/mpp-file-viewer-gantt-chart/id6799043030)

View and inspect Gantt charts, tasks, and resources from Microsoft Project and Primavera P6 schedule files on your Apple devices. Export project information as PDF or CSV for easy sharing. Files are processed locally for privacy.

**Highlights:** Open MPP, MPT, MSPDI, XER, P6 XML, and MPX files, Inspect Gantt charts, tasks, and resources, Browse task hierarchy, Navigate pinch-to-zoom Gantt timeline, Export as PDF or CSV, Print Gantt charts

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GanttPeek Pro (Monthly) | $5.99 | per month |
| GanttPeek Pro (Yearly) | $19.99 | per year |
| GanttPeek Pro 7-Day Pass | $4.99 | one-time |
| GanttPeek Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is ProjectKiller free?

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

### Is MPP File Viewer free?

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

### Do ProjectKiller or MPP File Viewer have ads?

Neither ProjectKiller nor MPP File Viewer shows ads.

### Which is updated more often, ProjectKiller or MPP File Viewer?

ProjectKiller ships an update every 2 weeks, and MPP File Viewer every 6 days. Most recently, ProjectKiller was updated on October 24, 2026 and MPP File Viewer on October 25, 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.*