22
BU Score
Niche
Chest Compression Fraction CCF
✍️ bumetric analysis
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Chest Compression Fraction CCF is an iOS app from STAR CPR San Diego in the News category, currently rated 1.7★ across 10 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Our BU Score puts it at 22: Niche (micro-niche or pre-traction stage). For a News app, that means micro-niche or pre-traction stage.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
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Reviews
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Forecast Revenue / mo
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Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($1.99)METRIC | +$2,800 | |
| Below-average rating (1.7★)METRIC | −$1,500 | |
| Established app (5y old)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (10 ratings)METRIC | −$300 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
May 24
Jul 24
Nov 24
Dec 24
Dec 25
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 8 MB🔞 12+📱 iOS 13.4+🔖 v1.0🔄 updated 5y ago🌐 EN📂 News💰 Paid🚀 Launched 2021 (5y old)
📝 About this app
As you know Interruptions in chest compressions during cardiopulmonary resuscitation (CPR) can decrease the survival rate in out of hospital cardiac arrest. Perfusion stops when CPR stops. The chest compression fraction (CCF) is the amount of time spent administering chest compressions during cardiac arrest. If you can obtain a CCF above 80% you can dramatically increase the survival rate. The CCF Calculator works in conjunction with a compression rate of at least 100/min, assuring adequate compression depth and recoil. Thats why we also included a metronome for 100 and 120 beats per minute.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Chest Compression Fraction CCF
- Developer
- STAR CPR San Diego
- Bundle ID
- com.us.dartsim.ChestCompressionFractionTimer
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 12+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $86/mo
- Top-grossing rank
- Outside top 100 in US News
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- https://apps.apple.com/us/iphone/story/id1603519753
⭐Recent App Store Reviews8 latest · avg 1.88★ · 12.5% 5★ · 75.0% 1★
5★1 (12%)
4★1 (12%)
3★0 (0%)
2★0 (0%)
1★6 (75%)
+0 ratings/week
Praise: great ×2Complaints: refund ×1 terrible ×1 hate ×1
Top positive
★☆☆☆☆ Note is not working
The app keeps getting stuck in note mode. There is no other way to get out of the note as to restart the app. Useless…
★★★★☆ I use this application CCF Calculator for 2+people Basic Life Support Instruction
I have been using this application to emphasize the evidence-based ROC Trials results for AHA (Chest Compression Fraction) of 80% or higher and to increase survival of our Cardiac Arrest Patients.
I usually assign 4 students per 2-rescuer …
Top negative
★☆☆☆☆ Does not work
Does not work on iPhone 16…
★☆☆☆☆ Not a very useful app
Disappointed with this app.
Reason why: you need to change/estimate how long the code is going to run for. When in practicing case scenarios it’s not always known how long a practice code is going to last. Even if you over shoot how long a…
📈Ratings growth10 ratings+900% lifetimeShow 3-year history estimate ▾
Tracked (10 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
More by STAR CPR San Diego
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Full revenue analysis
Read the article-style breakdown for Chest Compression Fraction CCF: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.