# Schedulus vs ZenZettel

The clearest difference is in-app purchases: Schedulus at none against ZenZettel's 2. Schedulus also leads on iOS requirement (13.4 vs 15.1). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. ZenZettel sells 2 in-app purchases, starting at $0.99 per month. Schedulus asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Schedulus against 5.0 for ZenZettel. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Schedulus ships an update every 4 weeks, ZenZettel every 2 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Schedulus | ZenZettel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/schedulus/id6468667925/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/zenzettel/id6744944376/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | **Free** | Freemium |
| Size | 29 MB | 41 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [4Tech Development Corp](https://appshunter.io/developer/1702245008) | [Ising Digital Sarl](https://appshunter.io/developer/1685735618) |

## What reviewers say

### Schedulus

[App page](https://appshunter.io/ios/app/schedulus/id6468667925)

This comprehensive operating system is designed for home service companies to manage their daily operations. It acts as the central backbone for businesses in this sector.

**Highlights:** Complete operating system for home services, Manages day-to-day operations, Backbone for business operations, Designed for home service companies

**Features:** macOS Compatibility

**In-app purchases:** none


### ZenZettel

[App page](https://appshunter.io/ios/app/zenzettel/id6744944376)

This app helps you build knowledge by transforming fleeting thoughts into permanent insights. It features a minimalist interface inspired by Japanese aesthetics, secure local storage, and AI-powered idea development. Organize your thoughts with smart tagging and advanced filtering.

**Highlights:** Impermanent note capture, AI-powered idea transformation, Advanced filtering, Minimalist interface, Secure local storage, Markdown export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |
| Premium | $9.99 | per year |


## Frequently asked questions

### Is Schedulus free?

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

### Is ZenZettel free?

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

### Which has better reviews, Schedulus or ZenZettel?

Schedulus and ZenZettel are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Schedulus or ZenZettel have ads?

Neither Schedulus nor ZenZettel shows ads.

### Which is updated more often, Schedulus or ZenZettel?

Schedulus ships an update every 4 weeks, and ZenZettel every 2 months. Most recently, Schedulus was updated on September 8, 2026 and ZenZettel on September 10, 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.*