# Week Numbers vs MPP Viewer

The clearest difference is price: Week Numbers at Free against MPP Viewer's $9.99. MPP Viewer's advantage is update cadence (weekly vs every 19 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Week Numbers is free to download; MPP Viewer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Week Numbers ships an update every 19 months, MPP Viewer weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Week Numbers | MPP Viewer |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 6 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Emoji Apps GmbH](https://appshunter.io/developer/336547449) | [Cardinate Consulting LLC](https://appshunter.io/developer/1851110860) |

## What reviewers say

### Week Numbers

[App page](https://appshunter.io/ios/app/week-numbers-calendar-weeks/id402559382)

Enhance your calendar with week numbers. This app integrates directly with your existing calendar, allowing you to display week numbers based on your preferred starting day and schema. Syncs seamlessly with iCloud and Exchange.

**Highlights:** Add week numbers to calendar, Choose calendar for display, Select week start day (Mon/Sun), Support for ISO 8601 and US schemas, iCloud and Exchange sync

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

**In-app purchases:** none


### MPP Viewer

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

**In-app purchases:** none


## Frequently asked questions

### Is Week Numbers free?

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

### Is MPP Viewer free?

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

### Do Week Numbers or MPP Viewer have ads?

Neither Week Numbers nor MPP Viewer shows ads.

### Which is updated more often, Week Numbers or MPP Viewer?

Week Numbers ships an update every 19 months, and MPP Viewer weekly. Most recently, Week Numbers was updated on October 24, 2026 and MPP 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.*