How much does Call Blocker - Stop spam calls make per month?

Based on our ML-calibrated revenue forecast, Call Blocker - Stop spam calls earns approximately $1.1K/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 - Stop spam calls?

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 - Stop spam calls?

Call Blocker - Stop spam calls is published by UnknownPhone.com 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 - Stop spam calls's BU Score?

Call Blocker - Stop spam calls has a BU Score of 70/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.

Call Blocker - Stop spam calls

Quality Score

Strong

Call Blocker - Stop spam calls

Name: Call Blocker - Stop spam calls — app revenue, audience, build cost & risk profile
Creator: bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Call Blocker - Stop spam calls revenue, Call Blocker - Stop spam calls app analytics, mobile app revenue estimate, Communication revenue, Android app revenue

High confidence

4.3 ✍️ Editor

✍️ bumetric analysis

“

Call Blocker - Stop spam calls is an Android app from UnknownPhone.com in the Communication category, currently rated 4.3★ across 30,520 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 70: Strong (healthy traction). For a Communication app, that means healthy traction. 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

Run free AI audit →

Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

Loading…

idle

Rating

—

Reviews

—

Forecast Revenue / mo

—

Snapshots tracked

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

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$30K

↳ What it would sell for · not monthly revenue

Marketplace range $25K – $40K · 29× MRR multiple

💸 ~0.2× build cost (under-water)

Synthetic estimate. Multiple band derived from iap / freemium model + 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

💎 IAP / freemium model base	28× MRR
🏷 Communication category multiple	+5%

Final multiple 29× MRR

👥 Estimated audience size

2.9M

Lifetime downloads (US-equivalent)

Monthly active

855K

Daily active

510K

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 CONFIDENCE

Baseline

$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 · 54/100MID TIERunderperforming peers

Growth Velocity

5.0

Founder Strength

4.0

Product Quality

8.5

Revenue Strength

3.7

Monetization Maturity

5.0

Defensibility

6.6

Market Position

0.0

Operational Safety

10.0

💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
⭐ Quality: 4.27★ across 30,520 reviews — strong (top 10%).
📍 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.

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

MODEL

Revenue 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 4 of 4 triggers

Our ML model uses 200+ signals from public data. These are the most influential for this app:

Mid install base (30,520 ratings)METRIC		+$5,500
Mature app (8y old)METRIC		+$1,500
Good rating (4.3★)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600

METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📥 Estimated Downloads / week

PROXY · ratings × 50/wk —

Industry-rule estimate (Sensor Tower / data.ai): one weekly install ≈ 50 new ratings. Solid points = tracked snapshots · faded line = pre-tracking model backfill.

📈 Reviews Growth

LIVE

Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE

Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY

Each bar shows a tracked update and the metric delta from the previous snapshot.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name: Call Blocker - Stop spam calls
Developer: UnknownPhone.com
Bundle ID: com.unknownphone.callblocker
App Store URL: Open in App Store
Category: Communication
Content rating: Not found
Languages: Not found

Company

Website: www.unknownphone.com
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: $1.1K/mo
Top-grossing rank: Not found
All-time revenue: Not found
Pricing: $4.99 - $29.99 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 growth30,520 ratings+2% lifetimeShow 3-year history estimate ▾

Tracked (1 weeks) Pre-tracking estimate (37 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

Block, identify and report suspicious phone numbers. Unknownphone.com brings you the most complete app to avoid phone scams, unwanted calls and extra charges in your bill. With more than 10,000,000 telephone numbers registered and identified in our website and a community with millions of users in U.K. and around the world, Unknownphone.com has the pleasure to bring you its official app.

<b>BLOCK PHONE NUMBERS</b>

- Do you want to know who is calling you? Are you annoyed by unwanted calls? With our app you will be able to block any phone number you want.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v3.4.1🔄 updated 0d ago📂 Communication💰 Free📺 Ad-supported💎 IAP $4.99 - $29.99 per item

🧪

Tech & Domain Intel — unknownphone.com

Tech stack: Google Workspace

Derived from public RDAP + DNS TXT records (no scraping, no login).

🔔

Track this app’s revenue

FREE

Get an email when revenue moves by your threshold. No spam, unsubscribe in one click.

📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Call Blocker - Stop spam calls: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →