HeartWatch: Heart Rate Monitor
77
Quality Score
Strong
✍️ Bumetric analysis
“
HeartWatch: Heart Rate Monitor is an iOS app from Tantsissa in the Business category, currently rated 4.7★ across 13,654 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 77: Strong (healthy traction). For a Business app, that means healthy traction. 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
$1.4M
per month
→
12-mo forecast
$1.5M – $2.3M
per month
→
24-mo forecast
$1.8M – $3.3M
per month
BIG 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
81 snapshots on record
Rating
4.7
Reviews
13,654 reviews
Forecast Revenue / mo
$1.4M
Snapshots tracked
81
since Mar 2022
ONE-TIME · BUILD
💰 Estimated build cost
$155K
↳ What it cost to build · not monthly revenue
Likely range $115K – $210K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in under a month 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 (71 MB) | +$8K |
| ⚙ Business complexity ×1.50 | +$29K |
| ⚙ 10.9y maintenance × ~1-person team | +$65K |
Total estimate
$155K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$30.0M
↳ What it would sell for · not monthly revenue
Marketplace range $22.5M – $39.0M · 21× MRR multiple
💸
~194× return on build cost
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 |
| 📅 10.9y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Business category multiple | +10% |
Final multiple
21× MRR
👥 Estimated audience size
620K
Lifetime downloads (US-equivalent)
Monthly active
63K
Daily active
18K
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
| 📲 Business engagement | ~65 installs / rating |
| 📅 10.9y of rating accumulation | -30% |
| 🔁 Business D30 retention | 22% |
| 📍 DAU / MAU stickiness | 0.30 |
DAU / MAU
29% sticky
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 70%
Also possible
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 📦 App bundle size | 71 MB |
| 🏷 Category context | Business |
| 📦 Small-mid iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-09-11 · 55 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 55 days since last update | Healthy release cadence |
Verdict
Active
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.4M/mo · ML-estimated from 234 triggers
Growth rate
+2.5% MoM · BIG tier baseline (compound monthly)
6 months
$1.4M – $1.9M
12 months
$1.5M – $2.3M
24 months
$1.8M – $3.3M
Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon — typical noise band ±15% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Mixed signals · 58/100BIG TIERcompetitive but cautiousRevenue Strength
6.1
Product Quality
9.4
Market Position
2.0
Growth Velocity
5.0
Defensibility
6.0
Operational Safety
10.0
Founder Strength
7.0
Monetization Maturity
1.0
- 💰 Revenue: Healthy — $560K - $3080K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.68★ across 13,654 reviews — exceptional (top 1% in category).
- 📍 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 = $25.2M-$44.8M.
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 12 of 12 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (13,654 ratings)METRIC | +$5,500 | |
| Paid app ($8.99)METRIC | +$2,800 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (10y old)METRIC | +$1,500 | |
| Multilingual (13 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| annoying adsREVIEW | −$1,100 |
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 · v4.10
Updated for iOS 27 and watchOS 27.
Better support for dark and light modes.
Various fixes and maintenance.
Refer to our Whats New page for more detail: https://heartwatch.tantsissa.com/faq/whats-new
Better support for dark and light modes.
Various fixes and maintenance.
Refer to our Whats New page for more detail: https://heartwatch.tantsissa.com/faq/whats-new
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- HeartWatch: Heart Rate Monitor
- Developer
- Tantsissa
- Bundle ID
- com.tantsissa.Heartbeat
- App Store URL
- Open in App Store
- Category
- Business
- Content rating
- 4+
- Languages
- NL, EN, FR, DE, IT, JA, KO, PT, RU, ZH, ES, SV, ZH
Company
- Website
- heartwatch.tantsissa.com
- Tagline
- 🇨🇳 🇯🇵 🇪🇸 🇰🇷 🇧🇷 🇳🇱 🇫🇷 🇩🇪 🇮🇹 🇹🇼 🇷🇺 🇸🇪
- Description
- 🇨🇳 🇯🇵 🇪🇸 🇰🇷 🇧🇷 🇳🇱 🇫🇷 🇩🇪 🇮🇹 🇹🇼 🇷🇺 🇸🇪
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $1.4M/mo
- Top-grossing rank
- Outside top 100 in US Business
- 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
- Socials
- youtube youtube.com/channel/UCbpGH7bSOI5ZFvwn…
- Not found
- Phone
- Not found
- Contact page
- heartwatch.tantsissa.com/support
- About page
- Not found
📈Ratings growth13,639 ratings+4431% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 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.
💰Pricing History$0.00 → $8.99 (+0%)
🚀Update Frequency · Releases per Quarter2 releases tracked
🚀Version Release Timeline2 releases tracked
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
"HeartWatch is so good, you’d think Apple built the app itself." John Patrick Pullen, Time Magazine. Top 5 in Health & Fitness in 100+ countries.
TOTAL PRIVACY
HeartWatch has no user analytics tracking. No advertising plugins. No 3rd party code. No data upload. Ask your "free" heart app if they can say the same.
ABOUT HEARTWATCH
HeartWatch is the best way to get a complete picture of all the health & fitness information captured by your Apple Watch.
NEWS
- Explore the different News Editions to learn all about your health progress and trends.… View full description on the official store →
TOTAL PRIVACY
HeartWatch has no user analytics tracking. No advertising plugins. No 3rd party code. No data upload. Ask your "free" heart app if they can say the same.
ABOUT HEARTWATCH
HeartWatch is the best way to get a complete picture of all the health & fitness information captured by your Apple Watch.
NEWS
- Explore the different News Editions to learn all about your health progress and trends.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 71 MB🔞 4+📱 iOS 17.0+🔖 v4.10🔄 updated 1mo ago🌐 NL, EN, FR, DE, IT +8📂 Business💰 Paid🚀 Launched 2015 (10y old)
📅
What Worked™ · Development Pipeline
15 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 →
2026-09
🔧
Shipped update — v4.9 → v4.10
→ 30 days after: reviews +15 high confidence
2026-05
💲
Went paid — introduced $8.99 price point
→ 30 days after: reviews +17 high confidence
2026-04
⭐
Rating ↑ 4.17 → 4.60 (improved 0.43★)
→ 30 days after: rating +0.08★ · reviews +30 high confidence
2026-04
📈
Crossed 1,000 ratings — social-proof flywheel kicking in
→ 30 days after: rating +0.08★ · reviews +30 high confidence
2026-02
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$31.0K/mo · rating +0.43★ · reviews +13,056 medium · co-occurring
2025-10
🔧
Shipped update — v? → v4.9
→ 30 days after: reviews +7 high confidence
2022-08
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.07★ · reviews +16 medium · co-occurring
2022-08
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$99/mo · reviews +43 low · multiple changes
2022-06
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: rating +0.13★ · reviews +17 high confidence
2022-06
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$80/mo · rating +0.11★ · reviews +34 high confidence
2022-03
🚀
First tracked snapshot — initial data captured
→ 30 days after: rating −0.21★ · reviews +15 medium · co-occurring
2022-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: rating −0.21★ · reviews +15 medium · co-occurring
2022-03
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
→ 30 days after: rating −0.21★ · reviews +15 low · multiple changes
2022-03
⭐
Rating ↓ 5.00 → 3.67 (dropped 1.33★)
→ 30 days after: rating −0.21★ · reviews +15 medium · co-occurring
2022-03
🚀
First tracked snapshot — initial data captured
→ 30 days after: rating −0.21★ · reviews +15 medium · co-occurring
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 4.68036★ | 13,656 | 4.68036★ this version |
| 🇬🇧 GB | 4.64565★ | 1,459 | 4.64565★ this version |
| 🇩🇪 DE | 4.61853★ | 6,454 | 4.61853★ this version |
| 🇫🇷 FR | 4.4955★ | 999 | 4.4955★ this version |
| 🇯🇵 JP | 4.15962★ | 946 | 4.15962★ this version |
| 🇨🇦 CA | 4.63954★ | 1,659 | 4.63954★ this version |
| 🇦🇺 AU | 4.7159★ | 1,063 | 4.7159★ this version |
| 🇧🇷 BR | 4.6326★ | 509 | 4.6326★ this version |
| 🇮🇳 IN | 4.66357★ | 431 | 4.66357★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for HeartWatch: Heart Rate Monitor: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Tantsissa
View all →📦 Portfolio summaryBIG studio
4apps·$2.8M/mocombined
Lead-app heavy — top app contributes 50%
About this analysis
Why high confidence: 13,654 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does HeartWatch make per month?▴
Based on our ML-calibrated revenue forecast, HeartWatch earns approximately $1.4M/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.
Is HeartWatch profitable?▴
With estimated build cost $155K and monthly revenue $1.4M, HeartWatch looks highly profitable — pays back its build investment in under a month at the current run-rate. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does HeartWatch have?▴
Estimated audience: ~620K lifetime downloads, ~63K monthly active users, and ~18K daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like HeartWatch?▴
Browse the full Business 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.
What is HeartWatch built with?▴
Our heuristic places HeartWatch on the Native iOS (Swift / UIKit) stack (Medium confidence, 70%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is HeartWatch still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 1 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would HeartWatch sell for?▴
Estimated acquisition value: $30.0M (marketplace range $22.5M – $39.0M). Calculated as 21× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was HeartWatch last updated?▴
HeartWatch last shipped a new version on 2026-09-11 — 1 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes HeartWatch?▴
HeartWatch is published by Tantsissa 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 HeartWatch's BU Score?▴
HeartWatch has a BU Score of 77/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.