Electromagnetic EMF Detector
65
Quality Score
Solid
Electromagnetic EMF Detector
Medium confidence
✍️ bumetric analysis
“
Electromagnetic EMF Detector is an iOS app from Jose Bello in the Utilities category, currently rated 4.4★ across 210 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 65: 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
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID tierFREE
💡 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
Loading…
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 |
| 📦 Asset bundle (61 MB) | +$4K |
| ⚙ Utilities complexity ×0.85 | $-8218 |
Total estimate
$45K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$150K
↳ What it would sell for · not monthly revenue
Marketplace range $125K – $200K · 12× MRR multiple
💸
~3.3× 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 |
| 🏷 Utilities category multiple | -10% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
12× MRR
👥 Estimated audience size
42K
Lifetime downloads (US-equivalent)
Monthly active
8.4K
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
| 📲 Utilities engagement | ~200 installs / rating |
| 🔁 Utilities D30 retention | 20% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
19% 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 · 41/100MID TIERFREE (NO MONETIZATION)underperforming peersGrowth Velocity
5.0
Founder Strength
5.1
Product Quality
6.1
Revenue Strength
3.7
Monetization Maturity
0.5
Defensibility
6.0
Market Position
2.0
Operational Safety
4.1
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.38★ across 210 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 1689d ago — possibly dormant.
- ⚠️ Risk: Elevated — scam/fraud mentions detected, dormant (1689d since update).
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 12-22× monthly = $60K-$110K. Portfolio play ($12K/mo combined) commands premium. Discount applied for operational risk..
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 ($0.00)METRIC | +$2,800 | |
| 5 starREVIEW | +$1,800 | |
| Mature app (10y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| annoying adsREVIEW | −$1,100 | |
| Good rating (4.4★)METRIC | +$800 | |
| Early-stage install base (210 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.
🆕 What's New · v5.4
Description changes and the accuracy has been improved.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Electromagnetic EMF Detector
- Developer
- Jose Bello
- Bundle ID
- com.bellostudios.electromagnetic
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN, ZH, ZH
Company
- Website
- Not found
- Tagline
- Curso de Apps
- 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
- $12.1K/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
Contacts & Socials data not yet collected for this app.
⭐Recent App Store Reviews49 latest · avg 3.92★ · 49.0% 5★ · 14.3% 1★
5★24 (49%)
4★13 (27%)
3★3 (6%)
2★2 (4%)
1★7 (14%)
+21 ratings/week
Praise: great ×10 awesome ×4 recommend ×2 amazing ×2 love ×1Complaints: worst ×2 terrible ×1 refund ×1 expensive ×1
Top positive
★★★★★ Awesome
Works great…
★★★★★ Just opened it.
I literally just opened it. Wants a review. I just opened it. That is my review…
Top negative
★☆☆☆☆ $3.00 not 2.00
They lie. You will pay $3.00 for this app. The time for a trial, for me, after I payed the $1.99 was about 30 seconds. Kept asking if I was enjoying app. So NO!!! Not enjoying app. Then to get rid of adds and to actually use the…
★☆☆☆☆ Garbage app
Does not work…
📈Ratings growth210 ratings+52% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (36 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.
💰Pricing History$0.00 → $1.99 (+0%)
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
This app is intended for entertainment purposes only and does not provide true electromagnetic and electrosmog detector functionality.
Track magnetic fields near you. A warning beep will be activated to warn you.
The app detects ferromagnetic metals using the iPhone's built-in compass feature. Also works as Electrosmog (EMP) detector.
Detect many kinds of home appliances that create radio-frequency EMF. For example:plugs,cell phones,routers, baby monitors, doorbells, intercom systems,night alarm clocks, electronic appliances , electrical wire, antennas.… View full description on the official store →
Track magnetic fields near you. A warning beep will be activated to warn you.
The app detects ferromagnetic metals using the iPhone's built-in compass feature. Also works as Electrosmog (EMP) detector.
Detect many kinds of home appliances that create radio-frequency EMF. For example:plugs,cell phones,routers, baby monitors, doorbells, intercom systems,night alarm clocks, electronic appliances , electrical wire, antennas.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 61 MB🔞 4+📱 iOS 9.0+🔖 v5.4🔄 updated 0d ago🌐 EN, ZH, ZH📂 Utilities💰 Paid
📅
What Worked™ · Development Pipeline
11 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 →
2026-05
⭐
Rating ↑ 2.50 → 4.38 (improved 1.88★)
2026-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-05
💲
Went paid — introduced $1.99 price point
2026-03
⭐
Rating ↓ 3.97 → 2.50 (dropped 1.47★)
2017-03
📈
Crossed 100 ratings — social-proof flywheel kicking in
2016-05
📈
Crossed 50 ratings — social-proof flywheel kicking in
2015-11
📈
Crossed 10 ratings — social-proof flywheel kicking in
2015-11
⭐
Rating ↓ 3.88 → 3.56 (dropped 0.32★)
2015-11
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2015-10
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
2015-10
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 94 reviews across 1 markets● 85% positive · ● 4% neutral · ● 11% negative · Rating drift: +0.00★ (stable — recent 50: 4.38★ vs lifetime: 4.38★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Top praise themes
seems work ×7 works works ×3 accurate ×11 found ×10 it's ×10 useful ×9 far ×9 find ×7
Top complaint themes
same ×6 ads ×6 free ×5 work ×4 pop ×4 after ×4 off ×4 alarm ×3
Risk signals
Fraud / scam mentions: 2.1%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4★ | 15 | 4★ this version |
| 🇧🇷 BR | 0★ | 0 | — |
| 🇨🇦 CA | 4.15789★ | 19 | 4.15789★ this version |
| 🇩🇪 DE | 4.75★ | 4 | 4.75★ this version |
| 🇫🇷 FR | 4★ | 2 | 4★ this version |
| 🇬🇧 GB | 4.41463★ | 41 | 4.41463★ this version |
| 🇮🇳 IN | 4★ | 1 | 4★ this version |
| 🇯🇵 JP | 4.5★ | 2 | 4.5★ this version |
| 🇺🇸 US | 4.37441★ | 211 | 4.37441★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Electromagnetic EMF Detector: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Jose Bello
View all →📦 Portfolio summaryINDIE studio
2apps·$12K/mocombined
⚠ Concentrated — top app contributes 99% of combined revenue (single-app dependency)
Similar apps in Utilities
About this analysis
Why medium confidence: 210 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Electromagnetic EMF Detector make per month?▴
Based on our ML-calibrated revenue forecast, Electromagnetic EMF Detector earns approximately $12K/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 Electromagnetic EMF Detector?▴
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 Electromagnetic EMF Detector?▴
Electromagnetic EMF Detector is published by Jose Bello 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 Electromagnetic EMF Detector's BU Score?▴
Electromagnetic EMF Detector has a BU Score of 65/100 (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.