RadioactivityCounter
41
Quality Score
Emerging
RadioactivityCounter
Low confidence
✍️ bumetric analysis
“
RadioactivityCounter is an iOS app from Dipl.-Ing. Rolf-Dieter Klein in the Utilities category, currently rated 3.1★ across 10 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 41: Emerging (early traction worth watching). For a Utilities app, that means early traction worth watching. 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
$500
per month
→
12-mo forecast
$437 – $1575
per month
→
24-mo forecast
$405 – $3644
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
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 ~5 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
$100K
↳ What it would sell for · not monthly revenue
Marketplace range $75K – $125K · 10× MRR multiple
💸
~2.2× 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 (weak) | -18% |
| 🏷 Utilities category multiple | -10% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
10× MRR
🔬
How we forecast this revenue
LOW CONFIDENCEBaseline
$500/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
$426 – $993
12 months
$437 – $1.6K
24 months
$405 – $3.6K
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 · 35/100INDIE TIERlimited signalRevenue Strength
2.7
Product Quality
2.5
Market Position
2.0
Growth Velocity
5.0
Defensibility
4.5
Operational Safety
5.0
Founder Strength
4.9
Monetization Maturity
1.0
- 💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 3.1★ across 10 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 3602d ago — possibly dormant.
- ⚠️ Risk: Elevated — dormant (3602d 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 18-32× monthly = $9K-$16K. Portfolio play ($8K/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 6 of 6 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 | |
| excellent appREVIEW | +$1,500 | |
| Below-average rating (3.1★)METRIC | −$1,500 | |
| Mature app (14y old)METRIC | +$1,500 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (10 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 · v2.2
This update from Apple will improve the functionality of this app. No new features are included.
Rev 2.2. New algorithm for more stable camera cold starts, needs less recalibration, bugfix on unkown devices, and experimental upload function for statistics.… Full release notes →
Rev 2.2. New algorithm for more stable camera cold starts, needs less recalibration, bugfix on unkown devices, and experimental upload function for statistics.… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- RadioactivityCounter
- Developer
- Dipl.-Ing. Rolf-Dieter Klein
- Bundle ID
- com.rdklein.RadioactivityCounter
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- 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
- $8.7K/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 Reviews10 latest · avg 3.3★ · 50.0% 5★ · 40.0% 1★
5★5 (50%)
4★1 (10%)
3★0 (0%)
2★0 (0%)
1★4 (40%)
+1 ratings/week
Praise: great ×3 amazing ×2 awesome ×1 excellent ×1Complaints: refund ×1
Top positive
★★★★★ Amazing sensor usage; not fake
Hats off to the developer for implementing a real measurement tool for radioactivity. Visit his website to see his calibration data, I know that measurements from my iPhone 6p matched my 'real' instrument by detecting faint radiat…
★★★★★ Amazing
I have this app on my iPhone 4 and 5s and it works great! I just downloaded it to my iPad Air but have yet to try it...will update. I had to look under iPhone apps only to download it to my iPad though.…
Top negative
★☆☆☆☆ Failed me in my time of need
I am in an intro to nuclear engineering class and I had to detect the number of gamma counts that a smoke detector would give off. I used this app, thinking nothing of it, but the second I put the tape on the cameras, I was greeted by 0 CPM…
★☆☆☆☆ None of this made sense!
I tried to use the app to check to see if any of the rocks I have been collecting show any signs of radiation. This description made this app look like what I needed. I dropped the $7, and have NEVER been so disappointed.
Nothing is in any…
📈Ratings growth10 ratings+900% lifetimeShow 3-year history estimate ▾
Tracked (13 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.
💰Pricing History$0.00 → $4.99 (+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
RadioactivityCounter
This application is a real working radioactivity counter without any extra hardware needed ! It will turn your phone into a Geiger Müller Counter to measure radioactivity after proper calibration.
** Attention after upgrading iOS to a higher iOS do the calibrate again, as camera data properties might have changed **
Disclaimer: The type of radiation picked up by the camera can be dangerous/detrimental to the user's health as well as cause damage to the device.… View full description on the official store →
This application is a real working radioactivity counter without any extra hardware needed ! It will turn your phone into a Geiger Müller Counter to measure radioactivity after proper calibration.
** Attention after upgrading iOS to a higher iOS do the calibrate again, as camera data properties might have changed **
Disclaimer: The type of radiation picked up by the camera can be dangerous/detrimental to the user's health as well as cause damage to the device.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 11 MB🔞 4+📱 iOS 8.0+🔖 v2.2🔄 updated 0d ago🌐 EN📂 Utilities💰 Paid
📅
What Worked™ · Development Pipeline
8 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
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-05
💲
Went paid — introduced $4.99 price point
2021-12
📈
Crossed 10 ratings — social-proof flywheel kicking in
2021-02
⭐
Rating ↓ 3.88 → 3.56 (dropped 0.32★)
2020-09
⭐
Rating ↓ 4.29 → 3.88 (dropped 0.41★)
2016-07
⭐
Rating ↓ 4.67 → 3.75 (dropped 0.92★)
2013-05
⭐
Rating ↓ 5.00 → 4.50 (dropped 0.50★)
2013-05
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 7 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇺🇸 US | 3.1★ | 10 | 3.1★ this version |
| 🇬🇧 GB | 1★ | 1 | 1★ this version |
| 🇯🇵 JP | 4★ | 3 | 4★ this version |
| 🇨🇦 CA | 5★ | 3 | 5★ this version |
| 🇦🇺 AU | 5★ | 1 | 5★ this version |
| 🇧🇷 BR | 5★ | 1 | 5★ this version |
| 🇮🇳 IN | 0★ | 0 | — |
🔔
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📝 Description
95
BU Score · Transcendent
Similar apps in Utilities
About this analysis
Why low confidence: only 10 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
RadioactivityCounter is a early-stage iOS app in the utilities space with weak public traction — only 10 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does RadioactivityCounter make per month?▴
Our model estimates RadioactivityCounter earns roughly $8.7K/mo, but with only 10 ratings the confidence interval is wide. No founder-verified MRR is available for this app, so this is a model output calibrated against comparable apps in the same category. See methodology for the formula.
What apps are like RadioactivityCounter?▴
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 RadioactivityCounter?▴
RadioactivityCounter is published by Dipl.-Ing. Rolf-Dieter Klein 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 RadioactivityCounter's BU Score?▴
RadioactivityCounter has a BU Score of 41/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.