41
BU Score
Emerging
Speedy Note: Bassschlüssel
✍️ bumetric analysis
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Speedy Note: Bassschlüssel is an iOS app from Brian Hughes in the News category, currently rated 3.7★ across 6 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 41: Emerging (early traction worth watching). For a News app, that means early traction worth watching.
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
—
Reviews
—
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 4 of 4 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 | |
| Mature app (12y old)METRIC | +$1,500 | |
| Localized (9 languages)METRIC | +$600 | |
| Pre-traction phase (6 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.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 23 MB🔞 4+📱 iOS 14.5+🔖 v1.9🔄 updated 4y ago🌐 EN, FR, DE, IT, JA +4📂 News💰 Paid🚀 Launched 2014 (12y old)
📝 About this app
Speedy Note: Bass Clef teaches you to read the Bass Clef (F Clef) in an interactive, fun and competitive game environment. Great for beginners to advanced, children or adults. Master the six levels and you have mastered the Bass Clef! Compete with yourself or with your friends. Speedy Note tracks your scores and lets you know how you are doing.
Speedy Note also allows you to learn at your own pace – you decide the level of difficulty and when to advance to more difficult levels.
Speedy Note: Bass Clef is very intuitive. It only takes a few moments to learn how to use (even for young children).
FEATURES:
Speedy Note is MIDI compatible. You can use your midi instrument to play the game and learn the notes. (Requires a MIDI interface connected through the lightening port or a Bluetooth LE MIDI device.)
CD quality piano sounds.
Can be used silently allowing you to practice learning notes anywhere, any time. (No need to turn down or off your device’s volume.)
You can learn either using alphabetic notation (A, B, C, D, E, F, G) or Solfege notation (Do, Re, Mi, Fa, Sol, La, Si).
Created by Bienelle Music.
Created by Bienelle Music
Speedy Note also allows you to learn at your own pace – you decide the level of difficulty and when to advance to more difficult levels.
Speedy Note: Bass Clef is very intuitive. It only takes a few moments to learn how to use (even for young children).
FEATURES:
Speedy Note is MIDI compatible. You can use your midi instrument to play the game and learn the notes. (Requires a MIDI interface connected through the lightening port or a Bluetooth LE MIDI device.)
CD quality piano sounds.
Can be used silently allowing you to practice learning notes anywhere, any time. (No need to turn down or off your device’s volume.)
You can learn either using alphabetic notation (A, B, C, D, E, F, G) or Solfege notation (Do, Re, Mi, Fa, Sol, La, Si).
Created by Bienelle Music.
Created by Bienelle Music
🆕 What's New · v1.9
Speedy Note is now compatible with iOS 14.5 or higher.
Speedy Note accepts MIDI input either hardwired through the Lightning port (you will need a midi interface) or using a Bluetooth LE MIDI device.
Silent mode.
Speedy Note accepts MIDI input either hardwired through the Lightning port (you will need a midi interface) or using a Bluetooth LE MIDI device.
Silent mode.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Speedy Note: Bassschlüssel
- Developer
- Brian Hughes
- Bundle ID
- com.tlcmusic.Speedy-Bass
- App Store URL
- Open in App Store
- Category
- News
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, JA, KO, RU, ZH, ES
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
- $201/mo
- Top-grossing rank
- Outside top 100 in US News
- 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
- Not found
- 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/id1884836200
📈Ratings growth6 ratings+500% lifetimeShow 3-year history estimate ▾
Tracked (6 weeks) Pre-tracking estimate (37 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.
Full revenue analysis
Read the article-style breakdown for Speedy Note: Bassschlüssel: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
