# DopamineOS vs Samon 砂紋

The clearest difference is in-app purchases: Samon 砂紋 at none against DopamineOS's 1. Samon 砂紋 also leads on update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. DopamineOS sells 1 one-off in-app purchase. Samon 砂紋 asks for nothing beyond the download.

DopamineOS ships an update every 2 months, Samon 砂紋 every 4 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | DopamineOS | Samon 砂紋 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/samon/id6821525813/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 56 MB | 0 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Konrad Kern](https://appshunter.io/developer/6775921733) | [The Cyan Zenith SL](https://appshunter.io/developer/1870115982) |

## What reviewers say

### DopamineOS

[App page](https://appshunter.io/ios/app/dopamineos/id6782207382)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DopamineOS Pro | $1.99 | one-time |


### Samon 砂紋

[App page](https://appshunter.io/ios/app/samon/id6821525813)

Experience tactile textures on your screen that respond to your touch with haptic feedback. Explore a variety of black and white patterns, from simple grids to complex mazes, each with unique sound and vibration responses.

**Highlights:** Generate on-demand black and white textures, Haptic feedback for tactile sensations, Unique sound and vibration responses, Directional texture interaction, No ads, tracking, or accounts

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

**In-app purchases:** none


## Frequently asked questions

### Is DopamineOS free?

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

### Is Samon 砂紋 free?

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

### Do DopamineOS or Samon 砂紋 have ads?

Neither DopamineOS nor Samon 砂紋 shows ads.

### Which is updated more often, DopamineOS or Samon 砂紋?

DopamineOS ships an update every 2 months, and Samon 砂紋 every 4 days. Most recently, DopamineOS was updated on October 31, 2026 and Samon 砂紋 on November 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*