Skill Tree vs CPAP Analysis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Skill Tree
Visualize and strategize your Brazilian Jiu-Jitsu game with a custom mind map. Organize skills, highlight areas for focused training, and attach videos to moves. Progress faster by clearly mapping out your martial arts journey.
- Customizable mind map visualization
- Color-coded skill categorization
- Highlighting skills for deliberate training
- Video attachment for moves
- Progress tracking for BJJ game
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Skill Tree is your custom mind map for your BJJ game. Visualize your game with branches and color-coded skills. Strategize and progress quicker by highlighting skills for deliberate training. Simple to use in whatever way is best for you. No need to write out complex verbal descriptions of moves — just add a video (YouTube, Instagram, or Personal Gallery). SUBSCRIPTION INFORMATION Unlock premium features and enjoy the full app experience with our subscription. • Monthly Subscription – $1.99 per month (1 Month) • Yearly Subscription – $15.00 per year (1 Year) Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://www.skilltreebjj.com/terms-and-conditions Privacy Policy: https://www.skilltreebjj.com/privacy
CPAP Analysis
Easily import and analyze your CPAP machine's data directly on your iPhone. Track events, pressure, SpO2, and sleep trends. Integrates with Apple Health and allows secure data sharing.
- SD card data import
- Event breakdown by type
- Leak rate and pressure tracking
- Respiratory metrics
- SpO2 and pulse monitoring
- Apple Health integration
- Secure data sharing
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See what your CPAP recorded last night – right on your iPhone. Plug in your machine's SD card and see how you slept, how many times your breathing stopped and how your therapy is going, all explained in plain English. NEW TO CPAP? START HERE The first months of therapy bring a lot of questions. CPAP Analysis helps you find the answers: • How did last night go? See your AHI (breathing events per hour) and how it compares with your usual night. • Am I using it enough? Track your hours against the usage goal Medicare and many US insurers use – at least 4 hours a night on 70% of nights – and see whether you're on track. • Is it getting better? See how your therapy is trending over weeks and months. • No jargon. Every chart comes with a plain-English guide to what it shows and why it matters. YOUR NIGHT IN DETAIL • See when you stopped breathing and what kind of event it was, on a timeline of every breathing event • AHI through the night, pressure, leak and more • Keep a sleep journal: rate how you slept, add a note and see how you felt next to your numbers YOUR PROGRESS OVER TIME • A plain-English read on how your therapy is going, updated as you import • Focus areas that point out things worth a look, like missed nights or a change in your events • Trends that show how your therapy is progressing, and give you clear points to raise with your sleep team BLOOD OXYGEN AND PULSE FROM YOUR APPLE WATCH OR O2 RING Wear an Apple Watch or a Wellue O2Ring? See your overnight blood oxygen and pulse on the same night as your CPAP data, plus your sleep stages from Apple Health. Any ring that syncs to Apple Health works. SHARE AND GET A SECOND OPINION • Share a night's graphs with a CPAP community when you want a second opinion • Export a night, or your trends from 7 days up to a year, as a PDF report BUILT BY A CPAP USER When I started CPAP, my machine's app said I was doing well – but I kept waking up frustrated and tired. When I looked at the detailed data, I found clusters of breathing events waking me up that the summary never showed. That gave me something real to talk to my doctor about. I built CPAP Analysis so you can see that detail too, explained in a way that makes sense. YOUR DATA STAYS YOURS No account. Your therapy history lives on your iPhone and your own iCloud, and syncs to your iPad. We never see it. WHAT YOU NEED • A ResMed CPAP machine that records to an SD card: AirSense 10, AirSense 11, AirStart 10, AirCurve 10 and 11, Lumis or S9 • A USB-C SD card reader for your iPhone – easy to find online Also shows event types (obstructive, central, hypopnea, CSR, RERA), respiratory rate, tidal volume, minute ventilation, snore, flow limitation and mask-on sessions. Earn optional award cards for streaks and milestones. SUBSCRIPTION Try CPAP Analysis Pro free, then choose a monthly or yearly plan. Your subscription renews automatically until you cancel in your Apple Account settings. CPAP Analysis is not a medical device. It displays the data your CPAP machine recorded and does not diagnose or treat any condition. Talk to your doctor or equipment supplier before changing your therapy. Not affiliated with or endorsed by ResMed. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://cpapanalysis.com/terms Privacy Policy: https://cpapanalysis.com/privacy
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Verdict
The clearest difference is monetization model: CPAP Analysis at freemium against Skill Tree's subscription. CPAP Analysis also leads on update cadence (every 9 days vs every 6 weeks) and ratings volume (7 vs 1). Skill Tree's advantage is iOS requirement (15.6 vs 26.2). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Skill Tree sells 2 in-app purchases, starting at $1.99 per month and CPAP Analysis sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Skill Tree against 5.0 for CPAP Analysis. That said, the two scores are not equally well evidenced: CPAP Analysis has 7 ratings behind it against 1, so its average is the more settled of the two.
Skill Tree ships an update every 6 weeks, CPAP Analysis every 9 days. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.
| Parameter | Skill Tree | CPAP Analysis |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (7 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Freemium — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 58 MB | 56 MB |
| Age rating | 4+ | 17+ |
| Developer | Jeffrey Byles | Fellbeck Ltd |
In-app purchases
Skill Tree
- Monthly Plan$1.991 Month
- Yearly Plan$14.991 Year
CPAP Analysis
- CPAP Analysis Monthly Subscription3 Days trial$5.991 Month
- CPAP Analysis Yearly Subscription3 Days trial$29.991 Year









