Call Blocker - Block Numbers
65
Quality Score
Solid
✍️ bumetric analysis
“
Call Blocker - Block Numbers is an Android app from Glad Appvestor in the Communication category, currently rated 3.9★ across 178,124 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 Communication 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
$700K
per month
→
12-mo forecast
$741K – $1141K
per month
→
24-mo forecast
$886K – $1645K
per month
BIG 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
$150K
↳ What it cost to build · not monthly revenue
Likely range $110K – $200K
$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 |
| 💎 In-app purchase plumbing | +$9K |
| ⚙ Communication complexity ×1.65 | +$38K |
| 🌐 Cross-platform reach (iOS + Android) | +$53K |
Total estimate
$150K
👥 Estimated audience size
16.5M
Lifetime downloads (US-equivalent)
Monthly active
5.0M
Daily active
3.0M
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
| 📲 Communication engagement | ~95 installs / rating |
| 🔁 Communication D30 retention | 30% |
| 📍 DAU / MAU stickiness | 0.60 |
DAU / MAU
60% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$700K/mo · ML-estimated from 234 triggers
Growth rate
+2.5% MoM · BIG tier baseline (compound monthly)
6 months
$690K – $933K
12 months
$741K – $1.1M
24 months
$886K – $1.6M
Compound growth at +2.5% MoM (tier baseline for BIG). Range widens with horizon — typical noise band ±15% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Mixed signals · 56/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
4.8
Product Quality
7.8
Revenue Strength
5.8
Monetization Maturity
5.0
Defensibility
7.4
Market Position
0.0
Operational Safety
9.0
- 💰 Revenue: Healthy — $280K - $1540K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 3.91★ across 178,124 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 241d ago — slow cadence.
- ⚠️ 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 = $12.6M-$22.4M.
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:
| High install base (178,124 ratings)METRIC | +$12,000 | |
| 5 starREVIEW | +$1,800 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Established app (5y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
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
- Call Blocker - Block Numbers
- Developer
- Glad Appvestor
- Bundle ID
- com.smsrobot.call.blocker.caller.id.callmaster
- App Store URL
- Open in App Store
- Category
- Communication
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- www.callmaster.dev
- 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
- $230/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- $1.49 - $2.99 per item
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 growth178,124 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
Spam Call Blocker, Call Filter and Caller id in a single app free app - CallMaster.
CallMaster blocks spam calls and the following types of flagged calls from our database: block spam calls, block robocalls, spam likely, scam call blocker, and potential fraud calls. After call screen enables you to instantly block any unwanted callers or unknown numbers.
Key Features:
★ Spam Call Blocker
★ After call menu for instant number blocking
★ Call Filter
★ Block unknown callers
★ Telemarketing, spam and robocall blocker
★ Call Filter from blacklist on your device.… View full description on the official store →
CallMaster blocks spam calls and the following types of flagged calls from our database: block spam calls, block robocalls, spam likely, scam call blocker, and potential fraud calls. After call screen enables you to instantly block any unwanted callers or unknown numbers.
Key Features:
★ Spam Call Blocker
★ After call menu for instant number blocking
★ Call Filter
★ Block unknown callers
★ Telemarketing, spam and robocall blocker
★ Call Filter from blacklist on your device.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v9.6🔄 updated 0d ago📂 Communication💰 Free📺 Ad-supported💎 IAP $1.49 - $2.99 per item
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Call Blocker - Block Numbers: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Glad Appvestor
View all →📦 Portfolio summaryINDIE studio
4apps·$1K/mocombined
✓ Diversified — top app contributes 49%; risk spread across portfolio
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About this analysis
Why high confidence: 178,124 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Call Blocker - Block Numbers make per month?▴
Based on our ML-calibrated revenue forecast, Call Blocker - Block Numbers earns approximately $401/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 Call Blocker - Block Numbers?▴
Browse the full Communication 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 Call Blocker - Block Numbers?▴
Call Blocker - Block Numbers is published by Glad Appvestor 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 Call Blocker - Block Numbers's BU Score?▴
Call Blocker - Block Numbers 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.