Pulsey: Baby Heartbeat Monitor
62
Quality Score
Solid
Pulsey: Baby Heartbeat Monitor
Medium confidence
✍️ bumetric analysis
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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.
Quality Score is 62: Solid (established niche player). For a Education app, that means established niche player. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
💰 Monthly revenue · now vs forecast
● Right now
$3.5K
per month
→
12-mo forecast
$3.0K – $10.9K
per month
→
24-mo forecast
$2.8K – $25.3K
per month
INDIE tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
Loading…
Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$65K
↳ What it cost to build · not monthly revenue
Likely range $50K – $90K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~3.3y at current MRR
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| 📦 Asset bundle (56 MB) | +$2K |
| ⚙ Education complexity ×1.20 | +$10K |
Total estimate
$65K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$25K
↳ What it would sell for · not monthly revenue
Marketplace range $20K – $35K · 16× MRR multiple
💸
~0.4× build cost (under-water)
Synthetic estimate. Multiple band derived from ad-supported + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Education category multiple | +6% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
16× MRR
👥 Estimated audience size
19K
Lifetime downloads (US-equivalent)
Monthly active
3.5K
Daily active
1.0K
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲 Education engagement | ~85 installs / rating |
| 🔁 Education D30 retention | 18% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
29% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$3.5K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
6 months
$3.0K – $6.9K
12 months
$3.0K – $10.9K
24 months
$2.8K – $25.3K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Early-stage solo · 45/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
4.2
Product Quality
6.3
Revenue Strength
3.5
Monetization Maturity
1.0
Defensibility
3.6
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $1K - $8K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.51★ across 234 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: Low — no material risk signals detected.
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $62K-$111K.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
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 (5 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.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🆕 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
- Available
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
- 🇦🇺#44 /100 🇮🇳#61 /99 🇬🇧#63 /100
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
📈Ratings growth242 ratings+24100% lifetimeShow 3-year history estimate ▾
Tracked (18 weeks) Pre-tracking estimate (6 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Top Countries — Grossing Rank3 countries
🇦🇺AU#44 /100
🇮🇳IN#61 /99
🇬🇧GB#63 /100
📊Category Rank Trajectory#44 now · best #44 · worst #100
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.
📝 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.… View full description on the official store →
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.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 56 MB🔞 12+📱 iOS 17.0+🔖 v1.2.0🔄 updated 0d ago🌐 AR, FR, DE, ID, IT +8📂 Education💰 Paid
📅
What Worked™ · Development Pipeline
6 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-05
⭐
Rating ↑ 1.00 → 4.51 (improved 3.51★)
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-03
⭐
Rating ↓ 3.00 → 1.00 (dropped 2.00★)
2026-03
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
2026-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
2025-12
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3.5★ | 16 | 3.5★ this version |
| 🇧🇷 BR | 5★ | 7 | 5★ this version |
| 🇨🇦 CA | 5★ | 1 | 5★ this version |
| 🇩🇪 DE | 4.75★ | 4 | 4.75★ this version |
| 🇫🇷 FR | 3.33333★ | 3 | 3.33333★ this version |
| 🇬🇧 GB | 3.22727★ | 22 | 3.22727★ this version |
| 🇮🇳 IN | 4.54545★ | 11 | 4.54545★ this version |
| 🇯🇵 JP | 3★ | 2 | 3★ this version |
| 🇺🇸 US | 4.50833★ | 240 | 4.50833★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
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.
More by John Hetfield
View all →📦 Portfolio summaryINDIE studio
2apps·$1K/mocombined
⚠ Concentrated — top app contributes 95% of combined revenue (single-app dependency)
About this analysis
Why medium confidence: 234 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Pulsey make per month?▴
Based on our ML-calibrated revenue forecast, Pulsey earns approximately $1.6K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
What apps are like Pulsey?▴
Browse the full Education category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
Who makes Pulsey?▴
Pulsey is published by John Hetfield on the Apple App Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is Pulsey's BU Score?▴
Pulsey has a BU Score of 62/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.