# ZLev App vs Week Number Pro

The clearest difference is price: ZLev App at Free against Week Number Pro's $0.99. ZLev App also leads on review sentiment (100% vs 76%). On update cadence, ads, in-app purchases and device support there is nothing between them.

ZLev App is free to download; Week Number Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 9, 2026.

## The numbers

| Metric | ZLev App | Week Number Pro |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[3.0 (3 ratings)](https://appshunter.io/ios/app/week-number-pro/id1462575499/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **100.0% of reviews** | 76.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 39 MB | 2 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Zentrallaboratorium Deutscher Apotheker e.V.](https://appshunter.io/developer/557570590) | [Daniel Mensch](https://appshunter.io/developer/1164474130) |

## What reviewers say

### ZLev App

[App page](https://appshunter.io/ios/app/zlev-app/id1316741089)

This app provides a central hub for quality assurance of medicines and pharmacy-related products. It offers independent test reports, research on various substances, and educational resources for professionals.

**Highlights:** Independent test reports, Research on drugs and materials, Educational activities, News updates, PDF downloads, Professional hotline

**Features:** macOS Compatibility

**In-app purchases:** none


### Week Number Pro

[App page](https://appshunter.io/ios/app/week-number-pro/id1462575499)

This app displays the current week number on your Apple Watch as a complication. It also allows you to find the week number for any date or the dates for a specific week. It provides current day and date information for your Apple Watch and iPhone, with widget support.

**Highlights:** Apple Watch complications, Today widget support, Search week number for any date, Find dates for a selected week, ISO8601 calendar settings, Support for Smart Stack, Mac, Vision Pro, Standby Mode

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

**In-app purchases:** none


## Frequently asked questions

### Is ZLev App free?

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

### Is Week Number Pro free?

Week Number Pro costs $0.99, with no in-app purchases.

### Do ZLev App or Week Number Pro have ads?

Neither ZLev App nor Week Number Pro shows ads.

### Which is updated more often, ZLev App or Week Number Pro?

ZLev App ships an update every 2 months, and Week Number Pro every 2 months. Most recently, ZLev App was updated on October 9, 2026 and Week Number Pro 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.*