Audio Spectrum Analyzer
57
Quality Score
Solid
Audio Spectrum Analyzer
Low confidence
✍️ bumetric analysis
“
Audio Spectrum Analyzer is an iOS app from Black Cat Systems in the Utilities category, currently rated 3.9★ across 52 ratings. Initial signal reads as mostly critical sentiment so far: users flag rough edges and unmet expectations.
Quality Score is 57: Solid (established niche player). For a Utilities 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
$2.7K
per month
→
12-mo forecast
$2.4K – $8.6K
per month
→
24-mo forecast
$2.2K – $19.9K
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
$45K
↳ What it cost to build · not monthly revenue
Likely range $35K – $60K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~4 months 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 |
| ⚙ Utilities complexity ×0.85 | $-7575 |
Total estimate
$45K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$125K
↳ What it would sell for · not monthly revenue
Marketplace range $100K – $175K · 11× MRR multiple
💸
~2.8× return on build cost
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 3.5-4.0 (mixed) | -8% |
| 🏷 Utilities category multiple | -10% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
11× MRR
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$2.7K/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
$2.3K – $5.4K
12 months
$2.4K – $8.6K
24 months
$2.2K – $19.9K
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 · 39/100INDIE TIERlimited signalRevenue Strength
3.4
Product Quality
3.1
Market Position
0.0
Growth Velocity
5.0
Defensibility
6.0
Operational Safety
7.0
Founder Strength
6.0
Monetization Maturity
1.0
- 💰 Revenue: Modest — $1K - $6K/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.87★ across 52 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 3332d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (3332d 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 = $49K-$87K. Portfolio play ($19K/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 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($3.99)METRIC | +$2,800 | |
| great valueREVIEW | +$1,600 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (16y old)METRIC | +$1,500 | |
| slowREVIEW | −$1,200 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (52 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 · v1.5
This update from Apple will improve the functionality of this app. No new features are included.
Updates for iOS 10.3
Adds Blackman-Harris window
Adds volume indicator
Updates for iOS 10.3
Adds Blackman-Harris window
Adds volume indicator
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Audio Spectrum Analyzer
- Developer
- Black Cat Systems
- Bundle ID
- com.blackcatsystems.spectrumPad
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Not found
- Description
- Black Cat Systems - Windows and macOS software, specializing in ham / shortwave radio, audio, and science related programs
- 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
- $11.0K/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
- Socials
- twitter twitter.com/BlackCatSystems
- info@blackcatsystems.com
- Phone
- Not found
- Contact page
- Not found
- About page
- blackcatsystems.com/about.html
⭐Recent App Store Reviews40 latest · avg 3.58★ · 47.5% 5★ · 25.0% 1★
5★19 (48%)
4★6 (15%)
3★4 (10%)
2★1 (2%)
1★10 (25%)
+0 ratings/week
Praise: great ×11 excellent ×3 perfect ×2 awesome ×2 recommend ×1Complaints: bug ×1 refund ×1 broken ×1 terrible ×1
Top positive
★★★★★ Great app!
This is a great app! I use it all the time .... Especially to find troublesome hums, etc.…
★★★★★ Works
Works fine on my iPhone 5S. Great, simple little monitoring app. I bought it for the markers, which helps me kill feedback.…
Top negative
★☆☆☆☆ Doesn’t work
Doesn’t work with iPhone XR. Looks like it has t been updated in years. Not worth any money…
★☆☆☆☆ stopped working after about 3 minutes
but hey, does anyone’s design actually work nowadays?…
📈Ratings growth52 ratings+5100% lifetimeShow 3-year history estimate ▾
Tracked (42 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.
📝 About this app
Spectrum Pad turns your iPad, iPhone, or iPod Touch into an audio spectrum analyzer. Frequencies up to 20 kHz can be displayed.
You can control the displayed frequency span, as well as the FFT size, from 1024 to 262144 bins.
A logarithmic display of the entire 10 Hz to 20 kHz frequency range is available, and the graph fill mode can be turned on and off, as well as the display of up to five frequency markers.
Filtering (averaging) can be applied to the spectrum, to smooth out variations.… View full description on the official store →
You can control the displayed frequency span, as well as the FFT size, from 1024 to 262144 bins.
A logarithmic display of the entire 10 Hz to 20 kHz frequency range is available, and the graph fill mode can be turned on and off, as well as the display of up to five frequency markers.
Filtering (averaging) can be applied to the spectrum, to smooth out variations.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 1 MB🔞 4+📱 iOS 6.0+🔖 v1.5🔄 updated 0d ago🌐 EN📂 Utilities💰 Paid
📅
What Worked™ · Development Pipeline
9 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-03
⭐
Rating ↑ 3.56 → 3.90 (improved 0.34★)
2026-03
📈
Crossed 50 ratings — social-proof flywheel kicking in
2026-03
💲
Went paid — introduced $3.99 price point
2014-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
2013-12
⭐
Rating ↑ 2.75 → 3.20 (improved 0.45★)
2013-12
⭐
Rating ↓ 3.33 → 2.75 (dropped 0.58★)
2013-05
⭐
Rating ↑ 2.50 → 3.33 (improved 0.83★)
2013-02
⭐
Rating ↓ 4.00 → 2.50 (dropped 1.50★)
2010-06
🚀
First tracked snapshot — initial data captured
🔔
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📝 Description
95
BU Score · Transcendent
More by Black Cat Systems
View all →📦 Portfolio summaryINDIE studio
5apps·$19K/mocombined
Lead-app heavy — top app contributes 56%
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About this analysis
Why low confidence: only 52 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 Audio Spectrum Analyzer make per month?▴
Based on our ML-calibrated revenue forecast, Audio Spectrum Analyzer earns approximately $10K/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 Audio Spectrum Analyzer?▴
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 Audio Spectrum Analyzer?▴
Audio Spectrum Analyzer is published by Black Cat Systems 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 Audio Spectrum Analyzer's BU Score?▴
Audio Spectrum Analyzer has a BU Score of 57/100 (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.