# Shadow OS vs Kay's Records

The clearest difference is ads: Shadow OS at none against Kay's Records's shown. Shadow OS also leads on ratings volume (4 vs 1). Kay's Records's advantage is rating (5.0 vs 4.8). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Shadow OS sells 3 in-app purchases, starting at $9.99 per month and Kay's Records sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Kay's Records holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Shadow OS ships an update weekly, Kay's Records every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Shadow OS | Kay's Records |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/shadow-os/id6757407948/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kays-records/id6759607300/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 52 MB | 110 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Phonix & Aura LLC](https://appshunter.io/developer/1866703420) | [YOOBIN KIM](https://appshunter.io/developer/1879774636) |

## What reviewers say

### Shadow OS

[App page](https://appshunter.io/ios/app/shadow-os/id6757407948)

This app helps you understand your personal patterns by tracking your choices, habits, and daily signals. It provides weekly and monthly insights into what connects, repeats, and changes in your behavior, offering a data-driven approach to self-awareness without dictating actions.

**Highlights:** Track daily signals and check-ins, Analyze habits and timing, Receive weekly and monthly reads, Explore Jung-inspired archetypes, Compare baseline to actual choices, View evidence behind insights

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shadow OS Premium | $9.99 | per month |
| Shadow OS Annual | $79.99 | per year |
| Shadow OS Lifetime | $129.00 | one-time |


### Kay's Records

[App page](https://appshunter.io/ios/app/kays-records/id6759607300)

Embark on a personal journey to uncover life's hidden stories and begin documenting your own experiences. This game invites you to explore memories and create your own narrative.

**Highlights:** Uncover life's records, Document personal experiences, Narrative-driven gameplay, Based on real life

**Features:** iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Seeds | $0.99 | one-time |
| 100 Seeds | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| Remove Ads + 100 Seeds | $4.99 | one-time |
| 250 Seeds | $5.99 | one-time |


## Frequently asked questions

### Is Shadow OS free?

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

### Is Kay's Records free?

Kay's Records is free to download, with in-app purchases available.

### Which has better reviews, Shadow OS or Kay's Records?

Kay's Records is rated higher. Shadow OS averages 4.8 out of 5 from 4 ratings, while Kay's Records averages 5.0 from 1 ratings.

### Do Shadow OS or Kay's Records have ads?

Kay's Records shows ads; Shadow OS does not.

### Which is updated more often, Shadow OS or Kay's Records?

Shadow OS ships an update weekly, and Kay's Records every 5 days. Most recently, Shadow OS was updated on October 24, 2026 and Kay's Records 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.*