# Simple Sinus Zazen Timer vs Core1

The clearest difference is price: Core1 at Free against Simple Sinus Zazen Timer's $0.99. Core1 also leads on update cadence (every 3 days vs every 11 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Core1 is free to download; Simple Sinus Zazen Timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Sinus Zazen Timer ships an update every 11 months, Core1 every 3 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Simple Sinus Zazen Timer | Core1 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/core1/id6759274693/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 1 MB | 22 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Dirk Scheidt](https://appshunter.io/developer/1495649371) | [Heather Kim](https://appshunter.io/developer/1877817879) |

## What reviewers say

### Simple Sinus Zazen Timer

[App page](https://appshunter.io/ios/app/simple-sinus-zazen-timer/id1495663488)

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

**In-app purchases:** none


### Core1

[App page](https://appshunter.io/ios/app/core1/id6759274693)

This app guides users to build a single habit at a time, visualizing progress as a growing tree. Users can name their tree, set reminders, and define personal rewards upon completion, fostering a sense of accomplishment and encouraging consistency.

**Highlights:** Focus on one habit at a time, Grow a tree to visualize consistency, Name your tree, Set daily reminders, Define personal rewards, Build a forest of completed habits

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Sinus Zazen Timer free?

Simple Sinus Zazen Timer costs $0.99, with no in-app purchases.

### Is Core1 free?

Core1 is free to download, with no in-app purchases.

### Do Simple Sinus Zazen Timer or Core1 have ads?

Neither Simple Sinus Zazen Timer nor Core1 shows ads.

### Which is updated more often, Simple Sinus Zazen Timer or Core1?

Simple Sinus Zazen Timer ships an update every 11 months, and Core1 every 3 days. Most recently, Simple Sinus Zazen Timer was updated on October 27, 2026 and Core1 on October 28, 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.*