58
Quality Score
Solid
VL-Tone Synth
Medium confidence
✍️ bumetric analysis
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VL-Tone Synth is an Android app from Skrivarna Software in the Music & Audio category, currently rated 4.3★ across 1,011 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 58: 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID 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
$205K
↳ What it cost to build · not monthly revenue
Likely range $155K – $275K
$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 |
| ⚙Music & Audio complexity ×1.45 | +$22K |
| 🌐Cross-platform reach (iOS + Android) | +$40K |
| ⚙15.2y maintenance × ~1-person team | +$91K |
Total estimate$205K
ONE-TIME · EXIT VALUE💵 Estimated acquisition value
$10K
↳ What it would sell for · not monthly revenue
Marketplace range $5K – $10K · 18× MRR multiple
💸~0.0× 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 |
| 📅15.2y proven track record | +20% |
Final multiple18× MRR
👥 Estimated audience size
92K
Lifetime downloads (US-equivalent)
Monthly active
3.8K
Daily active
1.9K
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
| 📲Music & Audio engagement | ~130 installs / rating |
| 📅15.2y of rating accumulation | -30% |
| 🔁Music & Audio D30 retention | 20% |
| 📍DAU / MAU stickiness | 0.50 |
DAU / MAU50% sticky
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 80%
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
| 🏷Category context | Music & Audio |
| 📦Compact Android bundle | → Native Kotlin |
💀 Maintenance status
Likely abandoned
93%
Last shipped 2011-05-11 · 5493 days ago
0 · Active50 · At risk100 · 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
| 📅15y+ since last update | Likely abandoned |
| •15y old + 1y+ no update | +5% (API deprecation drift) |
VerdictLikely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 48/100MID TIERunderperforming peersRevenue Strength
3.7
Product Quality
7.7
Market Position
0.0
Growth Velocity
5.0
Defensibility
7.5
Operational Safety
7.0
Founder Strength
6.7
Monetization Maturity
1.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.29★ across 1,011 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 5493d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (5493d 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 = $90K-$160K. Portfolio play ($15K/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:
| Low install base (1,011 ratings)METRIC | +$1,500 | |
| Mature app (15y old)METRIC | +$1,500 | |
| Good rating (4.3★)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
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.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v0.4.7🔄 updated 15y ago📂 Music & Audio💰 Free🚀 Launched 2011 (15y old)
📝 About this app
Come on, just admit it! You are a little nostalgic and fondly remember the good old days when a man was a man, a mouse a mouse and a synth ... well, when a synth was a pocket calculator or the other way around.
Casio's strange VL-1 instrument sold 1,000,000 units between 1979 and 1984. Trio, the German band, used it to record their huge hit "DaDaDa", and bands like Human League, Devo, The Cars followed suit. And 30 years later it is still backing tracks by Moby and Fergie.
But you don't have to search Ebay to enjoy playing the "Fantasy" sound over a nice "Rock-2" blip.… View full description on the official store →
Casio's strange VL-1 instrument sold 1,000,000 units between 1979 and 1984. Trio, the German band, used it to record their huge hit "DaDaDa", and bands like Human League, Devo, The Cars followed suit. And 30 years later it is still backing tracks by Moby and Fergie.
But you don't have to search Ebay to enjoy playing the "Fantasy" sound over a nice "Rock-2" blip.… View full description on the official store →
🧪
Tech & Domain Intel — skrivarna.com
- Tech stack
- Google Workspace
Derived from public RDAP + DNS TXT records (no scraping, no login).
🔔
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Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- VL-Tone Synth
- Developer
- Skrivarna Software
- Bundle ID
- com.skrivarna.vltone.android
- App Store URL
- Open in App Store
- Category
- Music & Audio
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.skrivarna.com
- 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
- $525/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 growth1,011 ratings+10% lifetimeShow 3-year history estimate ▾
Tracked (1 weeks) Pre-tracking estimate (36 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.
More by Skrivarna Software
View all →📦 Portfolio summaryINDIE studio
7apps·$15K/mocombined
✓ Diversified — top app contributes 39%; risk spread across portfolio
Similar apps in Music & Audio
Full revenue analysis
Read the article-style breakdown for VL-Tone Synth: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
About this analysis
Why medium confidence: 1,011 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does VL-Tone Synth make per month?▴
Based on our ML-calibrated revenue forecast, VL-Tone Synth earns approximately $524/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 VL-Tone Synth profitable?▴
With estimated build cost $205K and monthly revenue $524, VL-Tone Synth looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does VL-Tone Synth have?▴
Estimated audience: ~92K lifetime downloads, ~3K monthly active users, and ~1K 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 VL-Tone Synth?▴
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.
What is VL-Tone Synth built with?▴
Our heuristic places VL-Tone Synth on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is VL-Tone Synth still actively maintained?▴
Maintenance status: Likely abandoned (93% abandonment risk). Last shipped version was 15+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would VL-Tone Synth sell for?▴
Estimated acquisition value: $10K (marketplace range $5.0K – $10K). Calculated as 18× 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 VL-Tone Synth last updated?▴
VL-Tone Synth last shipped a new version on 2011-05-11 — more than 15 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes VL-Tone Synth?▴
VL-Tone Synth is published by Skrivarna Software 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 VL-Tone Synth's BU Score?▴
VL-Tone Synth has a BU Score of 58/100 (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.