# View Tracker SpO2 & Pulse rate vs ZeroEntropy

The clearest difference is update cadence: ZeroEntropy at fortnightly against View Tracker SpO2 & Pulse rate's every 2 months. View Tracker SpO2 & Pulse rate's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. View Tracker SpO2 & Pulse rate sells 3 in-app purchases, starting at $2.99 per month and ZeroEntropy sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

View Tracker SpO2 & Pulse rate ships an update every 2 months, ZeroEntropy fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | View Tracker SpO2 & Pulse rate | ZeroEntropy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/view-tracker-spo2-and-pulse-rate/id1554990279/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 70 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Leadtek](https://appshunter.io/developer/558798034) | [Ranjan Kumar](https://appshunter.io/developer/1893090171) |

## What reviewers say

### View Tracker SpO2 & Pulse rate

[App page](https://appshunter.io/ios/app/view-tracker-spo2-and-pulse-rate/id1554990279)

This app records SpO2 and pulse rate during sleep using a Bluetooth fingertip pulse oximeter. It generates reports for doctors to analyze sleep conditions and make diagnoses. The app does not provide medical advice.

**Highlights:** SpO2 and pulse rate recording, Bluetooth fingertip oximeter pairing, Sleep report generation, SpO2 and pulse trend analysis, Downloadable PDF reports, Unlimited report downloads via subscription

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1Month unlimited report | $2.99 | per month |
| 6Months unlimited report | $6.99 | per 6 months |
| 1Year unlimited report | $10.99 | per year |


### ZeroEntropy

[App page](https://appshunter.io/ios/app/zeroentropy/id6763794022)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZeroEntropy Premium | $12.99 | per month |
| ZeroEntropy Premium | $49.99 | per year |


## Frequently asked questions

### Is View Tracker SpO2 & Pulse rate free?

View Tracker SpO2 & Pulse rate is free to download, with in-app purchases available.

### Is ZeroEntropy free?

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

### Do View Tracker SpO2 & Pulse rate or ZeroEntropy have ads?

Neither View Tracker SpO2 & Pulse rate nor ZeroEntropy shows ads.

### Which is updated more often, View Tracker SpO2 & Pulse rate or ZeroEntropy?

View Tracker SpO2 & Pulse rate ships an update every 2 months, and ZeroEntropy fortnightly. Most recently, View Tracker SpO2 & Pulse rate was updated on October 27, 2026 and ZeroEntropy on October 24, 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.*