Call Ranger: Phone Blocker
67
Quality Score
Solid
✍️ Bumetric analysis
“
Call Ranger: Phone Blocker is an iOS app from Konstantinos Papadakis in the Utilities category, currently rated 4.4★ across 368 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 67: 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 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
96 snapshots on record
Rating
4.4
Reviews
368 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
96
since Jan 2017
ONE-TIME · BUILD
💰 Estimated build cost
$105K
↳ What it cost to build · not monthly revenue
Likely range $80K – $140K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~1.8y 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 |
| ⚙ 10.0y maintenance × ~1-person team | +$60K |
Total estimate
$105K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$75K
↳ What it would sell for · not monthly revenue
Marketplace range $50K – $100K · 15× MRR multiple
💸
~0.7× 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 |
| 📅 10.0y proven track record | +20% |
| 🏷 Utilities category multiple | -10% |
| ⭐ Small user base (<1K ratings) | -8% |
Final multiple
15× MRR
👥 Estimated audience size
51K
Lifetime downloads (US-equivalent)
Monthly active
5.3K
Daily active
1.0K
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 |
| 📅 10.0y of rating accumulation | -30% |
| 🔁 Utilities D30 retention | 20% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
19% sticky
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
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
| 📦 App bundle size | 23 MB |
| 🏷 Category context | Utilities |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-11-03 · 9 days ago
0 · Active
50 · At risk
100 · 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
| 📅 9 days since last update | Active development |
| 👥 Small user base (368 ratings) + 10.0y old | +10% (solo-project pattern) |
Verdict
Active
🔬
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 · 50/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
6.2
Product Quality
6.1
Revenue Strength
3.7
Monetization Maturity
1.0
Defensibility
6.0
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.37★ across 368 reviews — solid.
- 📍 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. Portfolio play ($32K/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 11 of 11 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($4.99)METRIC | +$2,800 | |
| subscriptionREVIEW | +$2,500 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (10y old)METRIC | +$1,500 | |
| Multilingual (13 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Good rating (4.4★)METRIC | +$800 | |
| Early-stage install base (368 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 · v8.4.2
• NEW: Live Activity lets you monitor rule updates from the Lock Screen
• NEW: The phone number field shows an example number for the selected country
• Numbers in local format are now recognized correctly in all countries
• Large imports are now much faster… Full release notes →
• NEW: The phone number field shows an example number for the selected country
• Numbers in local format are now recognized correctly in all countries
• Large imports are now much faster… Full release notes →
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Call Ranger: Phone Blocker
- Developer
- Konstantinos Papadakis
- Bundle ID
- com.papadakis.callblocker
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- AR, EN, FR, DE, HI, IT, JA, KO, PT, ZH, ES, ZH, VI
Company
- Website
- Not found
- Tagline
- Block spam calls & texts using patterns!
- Description
- Call Ranger: Mass Call Blocker
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $5.0K/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
Contacts & Socials data not yet collected for this app.
📈Ratings growth391 ratings+769% lifetimeShow 3-year history estimate ▾
Tracked (60 weeks) Pre-tracking estimate (0 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%)
🚀Update Frequency · Releases per Quarter8 releases tracked
🚀Version Release Timeline8 releases tracked
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
Block entire area codes, country codes, or any phone number range with Call Ranger!
Instead of blocking spam numbers one by one, create a single rule that covers a whole range. Choose how many of the last digits to replace with X, and every matching call and message is blocked. One rule can cover up to 10 billion numbers!
GLOBAL EXAMPLES:
• US: "+1 415 XXX XXXX" → blocks +1 415 000 0000 to +1 415 999 9999
• China: "+86 10 XXXX XXXX" → blocks +86 10 0000 0000 to +86 10 9999 9999
• Japan: "+81 3 XXXX XXXX" → blocks +81 3 0000 0000 to +81 3 9999 9999… View full description on the official store →
Instead of blocking spam numbers one by one, create a single rule that covers a whole range. Choose how many of the last digits to replace with X, and every matching call and message is blocked. One rule can cover up to 10 billion numbers!
GLOBAL EXAMPLES:
• US: "+1 415 XXX XXXX" → blocks +1 415 000 0000 to +1 415 999 9999
• China: "+86 10 XXXX XXXX" → blocks +86 10 0000 0000 to +86 10 9999 9999
• Japan: "+81 3 XXXX XXXX" → blocks +81 3 0000 0000 to +81 3 9999 9999… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 23 MB🔞 4+📱 iOS 16.0+🔖 v8.4.2🔄 updated 1w ago🌐 AR, EN, FR, DE, HI +8📂 Utilities💰 Paid🚀 Launched 2016 (10y old)
📅
What Worked™ · Development Pipeline
25 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 →
2026-11
📸
Refreshed store screenshots — 9 of 12 updated
2026-11
🔧
Shipped update — v8.2.0 → v8.4.2
→ 30 days after: reviews +28 medium · co-occurring
2026-10
📦
Bundle ↑ 13MB → 28MB — likely major code refresh
→ 30 days after: reviews +28 medium · co-occurring
2026-10
📸
Refreshed store screenshots — 9 of 9 updated
→ 30 days after: reviews +28 medium · co-occurring
2026-10
🔧
Shipped update — v7.7.1 → v8.2.0
→ 30 days after: rating +0.10★ · reviews +57 low · multiple changes
2026-07
🔧
Shipped update — v7.7.0 → v7.7.1
→ 30 days after: revenue +$14.3K/mo · reviews +26 high confidence
2026-07
🔧
Shipped update — v7.6.0 → v7.7.0
→ 30 days after: revenue +$14.3K/mo · reviews +32 high confidence
2026-06
🔧
Shipped update — v7.5.1 → v7.6.0
→ 30 days after: revenue +$14.3K/mo · reviews +35 high confidence
2026-06
🔧
Shipped update — v7.4.0 → v7.5.1
→ 30 days after: revenue +$14.3K/mo · reviews +31 high confidence
2026-06
🔧
Shipped update — v7.3.1 → v7.4.0
→ 30 days after: reviews +31 high confidence
2026-05
⭐
Rating ↑ 3.15 → 4.22 (improved 1.07★)
→ 30 days after: reviews +24 high confidence
2026-05
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +24 high confidence
2026-05
💲
Went paid — introduced $4.99 price point
→ 30 days after: reviews +24 high confidence
2026-03
⭐
Rating ↓ 3.80 → 3.15 (dropped 0.65★)
→ 30 days after: revenue +$123/mo medium · co-occurring
2026-03
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$123/mo medium · co-occurring
2026-03
⭐
Rating ↑ 3.14 → 3.80 (improved 0.66★)
→ 30 days after: revenue +$123/mo medium · co-occurring
2024-07
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$458/mo high confidence
2024-07
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$404/mo · rating −0.08★ high confidence
2018-03
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$223/mo high confidence
2018-02
⭐
Rating ↑ 2.25 → 2.56 (improved 0.31★)
→ 30 days after: revenue +$133/mo · rating +0.24★ high confidence
📸
Store Page History
18 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPad screenshots
Slot 1
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 2
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 3
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 4
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
iPhone screenshots
Slot 1
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 2
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 3
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 4
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
Slot 5
3 ver.
3 ver.
2026-08-06
2026-10-10
2026-11-10
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.13793★ | 29 | 4.13793★ this version |
| 🇧🇷 BR | 4.09999★ | 20 | 4.09999★ this version |
| 🇨🇦 CA | 3.91429★ | 35 | 3.91429★ this version |
| 🇩🇪 DE | 4.12791★ | 86 | 4.12791★ this version |
| 🇫🇷 FR | 4.5★ | 42 | 4.5★ this version |
| 🇬🇧 GB | 3.78947★ | 19 | 3.78947★ this version |
| 🇮🇳 IN | 4.4★ | 25 | 4.4★ this version |
| 🇯🇵 JP | 4.26667★ | 30 | 4.26667★ this version |
| 🇺🇸 US | 4.40153★ | 391 | 4.40153★ this version |
🔔
Track this app’s revenue
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Call Ranger: Phone Blocker: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Konstantinos Papadakis
View all →📦 Portfolio summaryINDIE studio
3apps·$15K/mocombined
✓ Diversified — top app contributes 33%; risk spread across portfolio
About this analysis
Why medium confidence: 368 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Call Ranger make per month?▴
Based on our ML-calibrated revenue forecast, Call Ranger earns approximately $5.0K/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 Call Ranger profitable?▴
With estimated build cost $105K and monthly revenue $5.0K, Call Ranger looks break-even-grade — payback period sits around 1.8 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Call Ranger have?▴
Estimated audience: ~51K lifetime downloads, ~5K 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 Call Ranger?▴
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.
What is Call Ranger built with?▴
Our heuristic places Call Ranger on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is Call Ranger still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 9 days ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Call Ranger sell for?▴
Estimated acquisition value: $75K (marketplace range $50K – $100K). Calculated as 15× 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 Call Ranger last updated?▴
Call Ranger last shipped a new version on 2026-11-03 — less than a month ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Call Ranger?▴
Call Ranger is published by Konstantinos Papadakis 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 Call Ranger's BU Score?▴
Call Ranger has a BU Score of 67/100 (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.