Vocal Pitch Monitor
34
Quality Score
Emerging
Vocal Pitch Monitor
by Tadao Yamaoka
Low confidence
✍️ GetAppValue analysis
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Vocal Pitch Monitor is an iOS app from Tadao Yamaoka in the Utilities category, currently rated 2.6★ across 41 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Quality Score is 34: Emerging (early traction worth watching). For a Utilities app, that means early traction worth watching. 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
$500
per month
→
12-mo forecast
$437 – $1575
per month
→
24-mo forecast
$405 – $3644
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
$45K
↳ What it cost to build · not monthly revenue
Likely range $35K – $60K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Slow ROI — current MRR is well below build cost
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 |
| ⚙ Utilities complexity ×0.85 | $-7575 |
Total estimate
$45K
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
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
Pre-traction · 32/100INDIE TIERlimited signalGrowth Velocity
5.0
Founder Strength
3.2
Product Quality
2.1
Revenue Strength
2.7
Monetization Maturity
1.0
Defensibility
4.5
Market Position
2.0
Operational Safety
5.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 2.61★ across 41 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 2043d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (2043d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 18-32× monthly = $9K-$16K.
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 4 of 4 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 (2.6★)METRIC | −$1,500 | |
| Mature app (12y old)METRIC | +$1,500 | |
| Pre-traction phase (41 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.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🆕 What's New · v1.3.0
- Added a tuner function
- Corresponding to the notch
- Improved pitch analysis accuracy
- Expanded the analysis range in the bass direction to C1
- Extend the recording time to 5 minutes
- Fixed bugs
- Corresponding to the notch
- Improved pitch analysis accuracy
- Expanded the analysis range in the bass direction to C1
- Extend the recording time to 5 minutes
- Fixed bugs
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Vocal Pitch Monitor
- Developer
- Tadao Yamaoka
- Bundle ID
- com.TadaoYamaoka.VocalPitchMonitor
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN, JA
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
- $144/mo
- Top-grossing rank
- Outside top 100 in US Utilities
- 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.
🌍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
It is an application which displays the pitch of the sound inputted from the microphone on a graph in real time.
A horizontal axis becomes time and the vertical axis has become a scale.
[Feature]
- Display the pitch inputted from the microphone in real time.
- Display 7 octaves from C1 to B7.
- Scroll the display range automatically.
- Display the present scale on the upper part of a screen in written form.
- Correspond to horizontal rotation of a screen.
- Recording and playback
- Save/Load function
- Scale setting
- Color settings for each note
- Tuner function
[Usage]… View full description on the official store →
A horizontal axis becomes time and the vertical axis has become a scale.
[Feature]
- Display the pitch inputted from the microphone in real time.
- Display 7 octaves from C1 to B7.
- Scroll the display range automatically.
- Display the present scale on the upper part of a screen in written form.
- Correspond to horizontal rotation of a screen.
- Recording and playback
- Save/Load function
- Scale setting
- Color settings for each note
- Tuner function
[Usage]… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 575 KB🔞 4+📱 iOS 11.0+🔖 v1.3.0🔄 updated 0d ago🌐 EN, JA📂 Utilities💰 Paid
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 3★ | 8 | 3★ this version |
| 🇧🇷 BR | 2.77778★ | 9 | 2.77778★ this version |
| 🇨🇦 CA | 3.375★ | 8 | 3.375★ this version |
| 🇩🇪 DE | 3.16667★ | 6 | 3.16667★ this version |
| 🇫🇷 FR | 2.66667★ | 6 | 2.66667★ this version |
| 🇬🇧 GB | 2.33333★ | 12 | 2.33333★ this version |
| 🇮🇳 IN | 1.42857★ | 7 | 1.42857★ this version |
| 🇯🇵 JP | 3.34615★ | 26 | 3.34615★ this version |
| 🇺🇸 US | 2.60976★ | 41 | 2.60976★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
About this analysis
Why low confidence: only 41 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Vocal Pitch Monitor make per month?▴
Based on our ML-calibrated revenue forecast, Vocal Pitch Monitor earns approximately $143/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 Vocal Pitch Monitor?▴
Browse the full Utilities 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 Vocal Pitch Monitor?▴
Vocal Pitch Monitor is published by Tadao Yamaoka 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 Vocal Pitch Monitor's BU Score?▴
Vocal Pitch Monitor has a BU Score of 34/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.