Function Health
81
Quality Score
Excellent
Function Health
High confidence
✍️ bumetric analysis
“
Function Health is an iOS app from Function Health in the Health & Fitness category, currently rated 4.9★ across 20,240 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 81: Excellent (strong product-market fit). For a Health & Fitness app, that means strong product-market fit. 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
$1.3K
per month
→
12-mo forecast
$1.1K – $4.0K
per month
→
24-mo forecast
$1.0K – $9.3K
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
$125K
↳ What it cost to build · not monthly revenue
Likely range $95K – $170K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~7 months 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 (154 MB) | +$40K |
| ⚙ Health & Fitness complexity ×1.40 | +$36K |
Total estimate
$125K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$350K
↳ What it would sell for · not monthly revenue
Marketplace range $250K – $450K · 19× MRR multiple
💸
~2.8× 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 |
| ⭐ ★ rating ≥ 4.7 (premium) | +15% |
| 🏷 Health & Fitness category multiple | +10% |
Final multiple
19× MRR
👥 Estimated audience size
1.4M
Lifetime downloads (US-equivalent)
Monthly active
305K
Daily active
105K
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
| 📲 Health & Fitness engagement | ~70 installs / rating |
| 🔁 Health & Fitness D30 retention | 22% |
| 📍 DAU / MAU stickiness | 0.35 |
DAU / MAU
34% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.3K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: low defensibility moat
6 months
$1.1K – $2.5K
12 months
$1.1K – $4.0K
24 months
$1.0K – $9.3K
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 · 46/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
5.3
Product Quality
9.9
Revenue Strength
3.1
Monetization Maturity
1.0
Defensibility
2.5
Market Position
0.3
Operational Safety
10.0
- 💰 Revenue: Modest — $511 - $3196/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.93★ across 20,240 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 = $23K-$40K. Portfolio play ($17K/mo combined) commands premium.
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 13 of 13 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (20,240 ratings)METRIC | +$5,500 | |
| Excellent rating (4.9★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| securityREVIEW | +$1,800 | |
| great valueREVIEW | +$1,600 | |
| cancelledREVIEW | −$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| annoying adsREVIEW | −$1,100 | |
| support teamREVIEW | +$900 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Single-language (English only)METRIC | −$400 | |
| Growing app (1y old)METRIC | +$200 |
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 · v1.26.0
This update includes:
• UX improvements and bug fixes
• UX improvements and bug fixes
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Function Health
- Developer
- Function Health
- Bundle ID
- com.functionhealth.functionhealth
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 17+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Check your health.
- Description
- It’s time you own your health. Function includes 160+ lab tests and personalized protocols for instant action. Tracked over time in one secure place.
- 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
- $17.9K/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- x.com/function
- linkedin.com/company/functionhealth
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
- Socials
- facebook facebook.com/askfunction · instagram instagram.com/function · linkedin linkedin.com/company/functionhealth · tiktok tiktok.com/@function · twitter x.com/function · youtube youtube.com/@functionhealth
- Not found
- Phone
- Not found
- Contact page
- functionhealth.com/contact-us
- About page
- functionhealth.com/about
📈Ratings growth20,240 ratings+710% lifetimeShow 3-year history estimate ▾
Tracked (45 weeks) Pre-tracking estimate (22 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.
📝 About this app
100 Healthy Years
Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data.
Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change.
160+ LAB TESTS
Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more.
ADVANCED MRI & CT SCANS… View full description on the official store →
Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data.
Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change.
160+ LAB TESTS
Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more.
ADVANCED MRI & CT SCANS… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 154 MB🔞 17+📱 iOS 15.5+🔖 v1.26.0🔄 updated 0d ago🌐 EN📂 Health & Fitness💰 Paid
📅
What Worked™ · Development Pipeline
11 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
🔧
Shipped update — v? → v1.26.0
2026-04
⭐
Rating ↑ 3.82 → 4.94 (improved 1.12★)
2026-04
📈
Crossed 500 ratings — social-proof flywheel kicking in
2025-07
📈
Crossed 100 ratings — social-proof flywheel kicking in
2025-02
📈
Crossed 50 ratings — social-proof flywheel kicking in
2024-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
2024-12
⭐
Rating ↓ 3.40 → 3.00 (dropped 0.40★)
2024-12
⭐
Rating ↓ 4.00 → 3.40 (dropped 0.60★)
2024-12
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
2024-11
⭐
Rating ↓ 5.00 → 3.67 (dropped 1.33★)
2024-09
🚀
First tracked snapshot — initial data captured
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Function Health: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why high confidence: 20,240 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Function Health make per month?▴
Based on our ML-calibrated revenue forecast, Function Health earns approximately $17K/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 Function Health?▴
Browse the full Health & Fitness 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 Function Health?▴
Function Health is published by Function Health 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 Function Health's BU Score?▴
Function Health has a BU Score of 81/100 (Excellent). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.