s.mart Fretboard Trainer Quiz
61
Quality Score
Solid
s.mart Fretboard Trainer Quiz
Low confidence
✍️ bumetric analysis
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s.mart Fretboard Trainer Quiz is an Android app from s.mart Music Lab in the Music & Audio category, currently rated 4.8★ across 38 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 61: Solid (established niche player). For a Music & Audio 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
$2.0K
per month
→
12-mo forecast
$1.7K – $6.2K
per month
→
24-mo forecast
$1.6K – $14.4K
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$115K
↳ What it cost to build · not monthly revenue
Likely range $85K – $155K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~4.8y 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 |
| ⚙ Music & Audio complexity ×1.45 | +$22K |
| 🌐 Cross-platform reach (iOS + Android) | +$40K |
Total estimate
$115K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$30K
↳ What it would sell for · not monthly revenue
Marketplace range $25K – $40K · 16× MRR multiple
💸
~0.3× 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 ≥ 4.7 (premium) | +15% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
16× MRR
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$2.0K/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
$1.7K – $3.9K
12 months
$1.7K – $6.2K
24 months
$1.6K – $14.4K
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 · 42/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
6.8
Product Quality
3.7
Revenue Strength
3.3
Monetization Maturity
1.0
Defensibility
6.5
Market Position
0.0
Operational Safety
7.0
- 💰 Revenue: Modest — $791 - $4945/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.6★ across 15 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 687d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (687d since update).
🎯 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 = $35K-$63K. Portfolio play ($22K/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 4 of 4 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($4.49)METRIC | +$2,800 | |
| Excellent rating (4.8★)METRIC | +$2,200 | |
| Established app (6y old)METRIC | +$800 | |
| Pre-traction phase (38 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.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- s.mart Fretboard Trainer Quiz
- Developer
- s.mart Music Lab
- Bundle ID
- de.smartchord.droid.plus.quiz.fretboard
- App Store URL
- Open in App Store
- Category
- Music & Audio
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.smartchord.de
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $2.0K/mo
- Top-grossing rank
- Not found
- 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 growth38 ratings+73% lifetimeShow 3-year history estimate ▾
Tracked (1 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
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
Learning the notes, chords and scales on the whole fretboard so well that you can quickly find them again while playing the guitar can be very tedious. Study these important things in a playful and nevertheless very effective way for every possible tuning and instrument like Guitar, Bass, Banjo or Ukulele.
Different quiz types and a lot of options make it diversified and never boring. Statistics show your progress and the notes, chords and scales you have to focus on. Certainly one of the most extensive and versatile of its kind.
⭐ Supports about 40 instruments.… View full description on the official store →
Different quiz types and a lot of options make it diversified and never boring. Statistics show your progress and the notes, chords and scales you have to focus on. Certainly one of the most extensive and versatile of its kind.
⭐ Supports about 40 instruments.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.5🔄 updated 0d ago📂 Music & Audio💰 Free
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📝 Description
95
BU Score · Transcendent
More by s.mart Music Lab
View all →📦 Portfolio summaryINDIE studio
14apps·$22K/mocombined
✓ Diversified — top app contributes 12%; risk spread across portfolio
About this analysis
Why low confidence: only 38 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 s.mart Fretboard Trainer Quiz make per month?▴
Based on our ML-calibrated revenue forecast, s.mart Fretboard Trainer Quiz earns approximately $2.0K/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 s.mart Fretboard Trainer Quiz?▴
Browse the full Music & Audio 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 s.mart Fretboard Trainer Quiz?▴
s.mart Fretboard Trainer Quiz is published by s.mart Music Lab on the Google Play 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 s.mart Fretboard Trainer Quiz's BU Score?▴
s.mart Fretboard Trainer Quiz has a BU Score of 61/100 (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.