# CPAP Tracker vs SubMetrix

The clearest difference is review sentiment: SubMetrix at 100% against CPAP Tracker's 33%. SubMetrix also leads on rating (5.0 vs 3.5) and ads (none vs shown). CPAP Tracker's advantage is iOS requirement (17.0 vs 26.2). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. CPAP Tracker sells 1 one-off in-app purchase and SubMetrix sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

SubMetrix holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 8 and 6 respectively. Written reviews point the same way: 33% of CPAP Tracker's written reviews are positive against 100% of SubMetrix's.

CPAP Tracker ships an update every 9 days, SubMetrix every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | CPAP Tracker | SubMetrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (8 ratings)](https://appshunter.io/ios/app/cpap-tracker/id6758072487/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/submetrix-jiu-jitsu-guide/id6765980744/reviews)** |
| Number of ratings | **8** | 6 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 28 MB | 19 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kristian Doran](https://appshunter.io/developer/1870723823) | [Dane Chapman](https://appshunter.io/developer/1825216114) |

## What reviewers say

### CPAP Tracker

[App page](https://appshunter.io/ios/app/cpap-tracker/id6758072487)

Manage your CPAP equipment and track sleep health. Log daily AHI, monitor supply inventory, and schedule cleaning tasks. Integrates with Apple Health for comprehensive sleep data analysis.

**Highlights:** CPAP equipment maintenance tracking, On-hand inventory management, Daily AHI logging, Apple Health sleep data integration, Cleaning schedule reminders, Replacement notifications, Apple Watch app

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPAP Tracker Pro | $3.99 | one-time |


### SubMetrix

[App page](https://appshunter.io/ios/app/submetrix-jiu-jitsu-guide/id6765980744)

This app helps Jiu-Jitsu practitioners track their training sessions, analyze their performance, and improve their skills. It provides detailed insights into submissions, positions, and weaknesses, offering tools like flow maps and flashcards to enhance learning and strategy.

**Highlights:** Track every roll with details, Analyze submissions and weaknesses, Visualize game flow and build plans, Improve knowledge with flashcards, AI companion for technique guidance, Performance analytics and data export

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubMetrix Pro (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is CPAP Tracker free?

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

### Is SubMetrix free?

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

### Which has better reviews, CPAP Tracker or SubMetrix?

SubMetrix is rated higher. CPAP Tracker averages 3.5 out of 5 from 8 ratings, while SubMetrix averages 5.0 from 6 ratings.

### Do CPAP Tracker or SubMetrix have ads?

CPAP Tracker shows ads; SubMetrix does not.

### Which is updated more often, CPAP Tracker or SubMetrix?

CPAP Tracker ships an update every 9 days, and SubMetrix every 4 days. Most recently, CPAP Tracker was updated on October 31, 2026 and SubMetrix on October 31, 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.*