# Week Plan Calendar vs Inventar Manager

The clearest difference is iOS requirement: Week Plan Calendar at 17.6 against Inventar Manager's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Week Plan Calendar sells 1 in-app purchase, starting at $4.99 per year and Inventar Manager sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Week Plan Calendar ships an update every 2 weeks, Inventar Manager weekly. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Week Plan Calendar | Inventar Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (33 ratings)](https://appshunter.io/ios/app/week-plan-calendar/id1621397141/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 12 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Michael Hoereth](https://appshunter.io/developer/368238101) | [Thomas Jakobs](https://appshunter.io/developer/1896307375) |

## What reviewers say

### Week Plan Calendar

[App page](https://appshunter.io/ios/app/week-plan-calendar/id1621397141)

A visually clear weekly calendar app that syncs with your device's native calendar and reminders. It offers multiple widgets for at-a-glance viewing and advanced configuration options for each calendar.

**Highlights:** Weekly overview with multi-day event clarity, Works with calendar events and reminders, Multiple widgets for iOS, iPadOS, and macOS, Lock screen widgets with live countdown, Analogue dial visualization of upcoming events, Yearly plan view and holiday calendar integration, Alerts for scheduling conflicts

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weather Forecast for 1 Year | $4.99 | per year |


### Inventar Manager

[App page](https://appshunter.io/ios/app/inventar-manager/id6766610773)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inventory Manager Pro (Monthly) | $2.99 | per month |
| Pro Version – Yearly | $24.99 | per year |


## Frequently asked questions

### Is Week Plan Calendar free?

Week Plan Calendar is free to download, with in-app purchases available.

### Is Inventar Manager free?

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

### Do Week Plan Calendar or Inventar Manager have ads?

Neither Week Plan Calendar nor Inventar Manager shows ads.

### Which is updated more often, Week Plan Calendar or Inventar Manager?

Week Plan Calendar ships an update every 2 weeks, and Inventar Manager weekly. Most recently, Week Plan Calendar was updated on September 23, 2026 and Inventar Manager on September 17, 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.*