# Shadow OS vs SkinPal

The clearest difference is in-app purchases: SkinPal at none against Shadow OS's 3. SkinPal also leads on rating (5.0 vs 4.8). Shadow OS's advantage is iOS requirement (15.1 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

SkinPal holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Shadow OS ships an update every 6 days, SkinPal every 9 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Shadow OS | SkinPal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/shadow-os/id6757407948/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/skinpal/id6802429736/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | Freemium | **Free** |
| Size | 52 MB | 62 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phonix & Aura LLC](https://appshunter.io/developer/1866703420) | [Paul J Caracciolo lll](https://appshunter.io/developer/6802429738) |

## 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 |


### SkinPal

[App page](https://appshunter.io/ios/app/skinpal/id6802429736)

Organize your skincare routine, products, and progress in one free app. Build custom schedules, log your products, and track changes with progress photos. Get gentle reminders to stay consistent and capture notes about your skin.

**Highlights:** Build custom skincare routines, Log and organize skincare products, Track skin progress with photos, Receive routine reminders, Record notes on products and reactions, View local weather and UV index

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

**In-app purchases:** none


## Frequently asked questions

### Is Shadow OS free?

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

### Is SkinPal free?

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

### Which has better reviews, Shadow OS or SkinPal?

SkinPal is rated higher. Shadow OS averages 4.8 out of 5 from 4 ratings, while SkinPal averages 5.0 from 2 ratings.

### Do Shadow OS or SkinPal have ads?

Neither Shadow OS nor SkinPal shows ads.

### Which is updated more often, Shadow OS or SkinPal?

Shadow OS ships an update every 6 days, and SkinPal every 9 days. Most recently, Shadow OS was updated on October 6, 2026 and SkinPal on October 7, 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.*