62
BU Score
Solid
Pulsey: Baby Heartbeat Monitor
✍️ bumetric analysis
“
Pulsey: Baby Heartbeat Monitor is an iOS app from John Hetfield in the Education category, currently rated 4.5★ across 234 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Our BU Score puts it at 62: Solid (established niche player). For a Education app, that means established niche player.
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
—
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 ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.5★)METRIC | +$2,200 | |
| Multilingual (13 languages)METRIC | +$1,500 | |
| New app (4 months old)METRIC | −$700 | |
| Early-stage install base (234 ratings)METRIC | +$400 |
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
Dec 25
Jan 26
Feb 26
Mar 26
⭐ 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 →💾 56 MB🔞 12+📱 iOS 17.0+🔖 v1.2.0🔄 updated 1w ago🌐 AR, FR, DE, ID, IT +8📂 Education💰 Paid🚀 Launched 2025 (0y old)
📝 About this app
PULSEY: Your Pregnancy Sound Journal
Listen to, record, and save the gentle sounds of your pregnancy. Pulsey uses advanced audio enhancement to help you amplify subtle belly sounds using only your iPhone microphone—no extra accessories needed.
HOW IT WORKS Pulsey acts as a sound amplifier for expecting parents. By using sophisticated audio processing, it highlights quiet sounds from your surroundings. Create a beautiful audio keepsake of your journey and build a personal pregnancy sound journal.
KEY FEATURES • Belly Sound Amplifier (Premium): Listen to quiet, subtle sounds with sound enhancement. • Record & Save (Premium): Capture audio sessions and build a library of memories. • Pregnancy Countdown: Track your progress with a due date countdown. • Mindful Listening: Designed for relaxing, quiet moments between parent and baby. • Private & Secure: All audio is stored 100% locally on your device.
Note: Amplification and Recording features require an in-app purchase.
TIPS FOR THE BEST EXPERIENCE • Remove your phone case for better microphone contact. • Find a very quiet room (background noise will be amplified). • Use headphones to hear the enhanced audio clearly. • Be patient—gentle movements and sounds take time to find.
PRIVACY & SAFETY Pulsey is for entertainment and wellness purposes only. It is NOT a medical device and is not intended to replace professional medical advice or provide clinical data (such as heartbeat monitoring). For any health concerns, always consult your doctor.
PRIVACY POLICY https://www.codivo.io/pulsey/privacy
TERMS OF USE https://www.codivo.io/pulsey/terms
Listen to, record, and save the gentle sounds of your pregnancy. Pulsey uses advanced audio enhancement to help you amplify subtle belly sounds using only your iPhone microphone—no extra accessories needed.
HOW IT WORKS Pulsey acts as a sound amplifier for expecting parents. By using sophisticated audio processing, it highlights quiet sounds from your surroundings. Create a beautiful audio keepsake of your journey and build a personal pregnancy sound journal.
KEY FEATURES • Belly Sound Amplifier (Premium): Listen to quiet, subtle sounds with sound enhancement. • Record & Save (Premium): Capture audio sessions and build a library of memories. • Pregnancy Countdown: Track your progress with a due date countdown. • Mindful Listening: Designed for relaxing, quiet moments between parent and baby. • Private & Secure: All audio is stored 100% locally on your device.
Note: Amplification and Recording features require an in-app purchase.
TIPS FOR THE BEST EXPERIENCE • Remove your phone case for better microphone contact. • Find a very quiet room (background noise will be amplified). • Use headphones to hear the enhanced audio clearly. • Be patient—gentle movements and sounds take time to find.
PRIVACY & SAFETY Pulsey is for entertainment and wellness purposes only. It is NOT a medical device and is not intended to replace professional medical advice or provide clinical data (such as heartbeat monitoring). For any health concerns, always consult your doctor.
PRIVACY POLICY https://www.codivo.io/pulsey/privacy
TERMS OF USE https://www.codivo.io/pulsey/terms
🆕 What's New · v1.2.0
Important bug fixes.
Enhanced Pregnancy Tracking
Enhanced Pregnancy Tracking
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Pulsey: Baby Heartbeat Monitor
- Developer
- John Hetfield
- Bundle ID
- com.pulsey-ios
- App Store URL
- Open in App Store
- Category
- Education
- Content rating
- 12+
- Languages
- AR, FR, DE, ID, IT, JA, KO, PL, PT, RU, ZH, ES, TR
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
- $1.6K/mo
- Top-grossing rank
- 🇦🇺#39 /99 🇮🇳#49 /99 🇯🇵#59 /96 🇬🇧#62 /99
- 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
- https://apps.apple.com/us/app/letterloop-group-newsletters/id6468623700
- 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/id1876455371
📈Ratings growth234 ratings+23300% lifetimeShow 3-year history estimate ▾
Tracked (9 weeks) Pre-tracking estimate (6 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution●Top 10●Top 30●Top 60
🌍Top Countries — Grossing Rank4 countries
🇦🇺AU#39 /99
🇮🇳IN#49 /99
🇯🇵JP#59 /96
🇬🇧GB#62 /99
📊Category Rank Trajectory#39 now · best #39 · worst #99
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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 John Hetfield
View all →
Full revenue analysis
Read the article-style breakdown for Pulsey: Baby Heartbeat Monitor: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.