SIREN + HORN SOUNDS
54
Quality Score
Solid
✍️ bumetric analysis
“
SIREN + HORN SOUNDS is an Android app from Hamm Technology Systems in the Entertainment category, currently rated 4.2★ across 233 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 54: Solid (established niche player). For a Entertainment 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
$100K
↳ What it cost to build · not monthly revenue
Likely range $75K – $135K
$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 |
| ⚙ Entertainment complexity ×1.30 | +$15K |
| 🌐 Cross-platform reach (iOS + Android) | +$36K |
Total estimate
$100K
👥 Estimated audience size
34K
Lifetime downloads (US-equivalent)
Monthly active
4.1K
Daily active
1.6K
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
| 📲 Entertainment engagement | ~150 installs / rating |
| 🔁 Entertainment D30 retention | 12% |
| 📍 DAU / MAU stickiness | 0.40 |
DAU / MAU
39% sticky
🔬
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 peersGrowth Velocity
5.0
Founder Strength
5.4
Product Quality
5.9
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
7.0
Market Position
0.0
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.23★ across 233 reviews — below category median.
- 📍 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 = $90K-$160K.
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:
| Good rating (4.2★)METRIC | +$800 | |
| Established app (7y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| Early-stage install base (233 ratings)METRIC | +$400 |
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
- SIREN + HORN SOUNDS
- Developer
- Hamm Technology Systems
- Bundle ID
- de.hammtech.sirenhornsounds
- App Store URL
- Open in App Store
- Category
- Entertainment
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- hamm-tech.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
- $57/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 growth233 ratings+57% 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.
📝 About this app
<u>Over 70 FREE Siren and Horn Sounds</u>
📣📣📣📣📣📣📣📣📣📣📣📣📣
Siren + Horn Sounds includes many of the best known and most popular sounds of sirens and horns. With over 70 free sounds, the app offers one of the largest and most comprehensive collections available on the Google Play Store. These include the great siren sounds of the police, fire brigade and rescue services from different countries.
<u>Benefits of this app:</u>
--------------------------------------
👍 Completely FREE
👍 Over 70 FREE siren and horn sounds
👍 Intuitive operation
👍 Fast loading
👍 Automatic language switching… View full description on the official store →
📣📣📣📣📣📣📣📣📣📣📣📣📣
Siren + Horn Sounds includes many of the best known and most popular sounds of sirens and horns. With over 70 free sounds, the app offers one of the largest and most comprehensive collections available on the Google Play Store. These include the great siren sounds of the police, fire brigade and rescue services from different countries.
<u>Benefits of this app:</u>
--------------------------------------
👍 Completely FREE
👍 Over 70 FREE siren and horn sounds
👍 Intuitive operation
👍 Fast loading
👍 Automatic language switching… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.0.9🔄 updated 0d ago📂 Entertainment💰 Free📺 Ad-supported
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for SIREN + HORN SOUNDS: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Hamm Technology Systems
View all →📦 Portfolio summaryINDIE studio
10apps·$803/mocombined
✓ Diversified — top app contributes 34%; risk spread across portfolio
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About this analysis
Why medium confidence: 233 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does SIREN + HORN SOUNDS make per month?▴
Based on our ML-calibrated revenue forecast, SIREN + HORN SOUNDS earns approximately $216/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 SIREN + HORN SOUNDS?▴
Browse the full Entertainment 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 SIREN + HORN SOUNDS?▴
SIREN + HORN SOUNDS is published by Hamm Technology Systems 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 SIREN + HORN SOUNDS's BU Score?▴
SIREN + HORN SOUNDS has a BU Score of 54/100 (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.