# MPP Viewer vs Gantt Chart

The clearest difference is price: Gantt Chart at Free against MPP Viewer's $9.99. Gantt Chart also leads on update cadence (every 2 days vs weekly). MPP Viewer's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Gantt Chart is free to download; MPP Viewer costs $9.99 up front. Gantt Chart sells 1 one-off in-app purchase. MPP Viewer asks for nothing beyond the download.

MPP Viewer ships an update weekly, Gantt Chart every 2 days. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | MPP Viewer | Gantt Chart |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Size | 6 MB | 2 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cardinate Consulting LLC](https://appshunter.io/developer/1851110860) | [YOSHIYUKI UEMATSU](https://appshunter.io/developer/1895723706) |

## What reviewers say

### MPP Viewer

[App page](https://appshunter.io/ios/app/mpp-viewer/id6760091078)

**In-app purchases:** none


### Gantt Chart

[App page](https://appshunter.io/ios/app/gantt-chart-project-timeline/id6816038134)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


## Frequently asked questions

### Is MPP Viewer free?

MPP Viewer costs $9.99, with no in-app purchases.

### Is Gantt Chart free?

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

### Do MPP Viewer or Gantt Chart have ads?

Neither MPP Viewer nor Gantt Chart shows ads.

### Which is updated more often, MPP Viewer or Gantt Chart?

MPP Viewer ships an update weekly, and Gantt Chart every 2 days. Most recently, MPP Viewer was updated on October 10, 2026 and Gantt Chart on October 9, 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.*