# CoreOS vs TRZR Journal

The clearest difference is in-app purchases: TRZR Journal at none against CoreOS's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CoreOS sells 3 in-app purchases, starting at $9.99 per month. TRZR Journal asks for nothing beyond the download.

CoreOS ships an update every 5 days, TRZR Journal every 8 days. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CoreOS | TRZR Journal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15 ratings)](https://appshunter.io/ios/app/coreos/id6761029041/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 32 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Jack Blank](https://appshunter.io/developer/1860957944) | [Soya Matsumura](https://appshunter.io/developer/1896773058) |

## What reviewers say

### CoreOS

[App page](https://appshunter.io/ios/app/coreos/id6761029041)

This app provides a comprehensive system for optimizing your physical and mental well-being. It integrates intelligent workout tracking, advanced sleep monitoring, and structured habit-building tools to enhance daily performance and consistency.

**Highlights:** AI-powered workout tracking, Sleep optimization system, Daily performance tracking, Smart habit building, Clean, powerful interface, Integrated system approach

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| monthly | $9.99 | per month |
| coreOsAbandonPaywall | $29.99 | per year |
| yearly | $49.99 | per year |


### TRZR Journal

[App page](https://appshunter.io/ios/app/trzr-journal/id6771160852)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CoreOS free?

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

### Is TRZR Journal free?

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

### Do CoreOS or TRZR Journal have ads?

Neither CoreOS nor TRZR Journal shows ads.

### Which is updated more often, CoreOS or TRZR Journal?

CoreOS ships an update every 5 days, and TRZR Journal every 8 days. Most recently, CoreOS was updated on October 24, 2026 and TRZR Journal on October 5, 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.*