# Zettelbox vs Simply Scheduled

The clearest difference is review sentiment: Simply Scheduled at 100% against Zettelbox's 31%. Simply Scheduled also leads on rating (4.9 vs 4.3). Zettelbox's advantage is price (Free vs $0.99) and device support (3 vs 1). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Zettelbox is free to download; Simply Scheduled costs $0.99 up front. Zettelbox sells 3 in-app purchases, starting at $4.99 per month and Simply Scheduled sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Simply Scheduled holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 24 and 25 respectively. Written reviews point the same way: 31% of Zettelbox's written reviews are positive against 100% of Simply Scheduled's.

Zettelbox ships an update every 2 weeks, Simply Scheduled every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Zettelbox | Simply Scheduled |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.3 (24 ratings)](https://appshunter.io/ios/app/zettelbox-ai-note-taking/id1605557791/reviews) | **[4.9 (25 ratings)](https://appshunter.io/ios/app/simply-scheduled/id6739735298/reviews)** |
| Number of ratings | 24 | **25** |
| Positive reviews | 30.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 117 MB | 6 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Source Research Society Supply Chain Limited](https://appshunter.io/developer/1761795867) | [Universal Queue LLC](https://appshunter.io/developer/1577058225) |

## What reviewers say

### Zettelbox

[App page](https://appshunter.io/ios/app/zettelbox-ai-note-taking/id1605557791)

Capture inspiration and organize your life with this app that integrates notes, to-dos, and scheduling. It helps transform scattered information into a structured knowledge base through smart review and related note linking. Enjoy secure local storage with optional cloud backups.

**Highlights:** Quick note capture with desktop widget, Intuitive tagging and nested categorization, Smart review to rediscover past thoughts, Link related notes for deeper understanding, Local encrypted storage, Cloud backup support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $4.99 | per month |
| Yearly Plan | $19.99 | per year |
| PowerPack Permanent | $64.99 | one-time |


### Simply Scheduled

[App page](https://appshunter.io/ios/app/simply-scheduled/id6739735298)

Manage appointments with a minimalist approach. This app offers simple, stress-free scheduling to help you plan your week with confidence, avoiding the clutter of traditional calendars.

**Highlights:** Minimalist appointment book, Effortless appointment management, Stress-free scheduling, Plan your week with confidence, Avoid calendar clutter

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Yearly Pro | $19.99 | per year |


## Frequently asked questions

### Is Zettelbox free?

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

### Is Simply Scheduled free?

Simply Scheduled costs $0.99, and also offers in-app purchases.

### Which has better reviews, Zettelbox or Simply Scheduled?

Simply Scheduled is rated higher. Zettelbox averages 4.3 out of 5 from 24 ratings, while Simply Scheduled averages 4.9 from 25 ratings.

### Do Zettelbox or Simply Scheduled have ads?

Neither Zettelbox nor Simply Scheduled shows ads.

### Which is updated more often, Zettelbox or Simply Scheduled?

Zettelbox ships an update every 2 weeks, and Simply Scheduled every 3 weeks. Most recently, Zettelbox was updated on October 24, 2026 and Simply Scheduled on October 24, 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.*