# Singular Light vs Zentouch

The clearest difference is in-app purchases: Singular Light at none against Zentouch's 1. Singular Light also leads on iOS requirement (8.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Zentouch sells 1 one-off in-app purchase. Singular Light asks for nothing beyond the download.

Singular Light ships an update every 8 months, Zentouch every 5 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Singular Light | Zentouch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/singular-light/id1634611433/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 26 MB | 4 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [CNOGA Medical Ltd.](https://appshunter.io/developer/1249224534) | [Hajime Nakamura](https://appshunter.io/developer/1011217140) |

## What reviewers say

### Singular Light

[App page](https://appshunter.io/ios/app/singular-light/id1634611433)

Easily track vital health information by connecting to medical devices. Monitor trends, view historical data, and securely share your health metrics with healthcare professionals.

**Highlights:** Connect CNOGA medical devices, Track blood pressure, Monitor oxygen saturation, View heart rate, Track trends over time, Share health data with professionals

**Features:** macOS Compatibility

**In-app purchases:** none


### Zentouch

[App page](https://appshunter.io/ios/app/zentouch-breathe/id6475622246)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zentouch Pro | $2.99 | one-time |


## Frequently asked questions

### Is Singular Light free?

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

### Is Zentouch free?

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

### Do Singular Light or Zentouch have ads?

Neither Singular Light nor Zentouch shows ads.

### Which is updated more often, Singular Light or Zentouch?

Singular Light ships an update every 8 months, and Zentouch every 5 months. Most recently, Singular Light was updated on October 30, 2026 and Zentouch on October 27, 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.*