How much does Calloop make per month?

Based on our ML-calibrated revenue forecast, Calloop earns approximately $700K/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 Calloop profitable?

With estimated build cost $135K and monthly revenue $700K, Calloop looks highly profitable — pays back its build investment in under a month at the current run-rate. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.

How many users does Calloop have?

Estimated audience: ~2.0M lifetime downloads, ~120K monthly active users, and ~12K 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 Calloop?

Browse the full Personalization 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 Calloop built with?

Our heuristic places Calloop on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.

How much would Calloop sell for?

Estimated acquisition value: $20.0M (marketplace range $15.0M – $26.0M). Calculated as 29× 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.

Calloop is published by Walloop 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 Calloop's BU Score?

Calloop has a BU Score of 69/100 (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.

Calloop: Color Phone Flash

Quality Score

Solid

Calloop: Color Phone Flash

Name: Calloop: Color Phone Flash — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Calloop: Color Phone Flash revenue, Calloop: Color Phone Flash app analytics, mobile app revenue estimate, Personalization revenue, Android app revenue

by Walloop

High confidence

4.3 Google Play rating

✍️ Bumetric analysis

“

Calloop: Color Phone Flash is an Android app from Walloop in the Personalization category, currently rated 4.3★ across 13,212 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 69: Solid (established niche player). For a Personalization 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

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Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

5 snapshots on record

idle

Rating

4.3

Reviews

13,212 reviews

Forecast Revenue / mo

$700K

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$135K

↳ What it cost to build · not monthly revenue

Likely range $100K – $180K

$25K · MVP floor $100K · indie scale $500K+ · studio build

📈 Pays back in under a month 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
💎 In-app purchase plumbing	+$9K
⚙ Personalization complexity ×0.90	$-5949
🌐 Cross-platform reach (iOS + Android)	+$29K
⚙ 8.3y maintenance × ~1-person team	+$49K

Total estimate $135K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$20.0M

↳ What it would sell for · not monthly revenue

Marketplace range $15.0M – $26.0M · 29× MRR multiple

💸 ~148× return on build cost

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
📅 8.3y proven track record	+20%
🏷 Personalization category multiple	-15%

Final multiple 29× MRR

👥 Estimated audience size

2.0M

Lifetime downloads (US-equivalent)

Monthly active

120K

Daily active

12K

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

📲 Personalization engagement	~220 installs / rating
📅 8.3y of rating accumulation	-30%
🔁 Personalization D30 retention	10%
📍 DAU / MAU stickiness	0.10

DAU / MAU 10% sticky

🛠 Estimated tech stack

🤖

Native Android (Kotlin)

High confidence · 80%

Also possible

Flutter

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

🏷 Category context	Personalization
📦 Compact Android bundle	→ Native Kotlin

🔬

How we forecast this revenue

MEDIUM CONFIDENCE

Baseline

$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 · 62/100BIG TIERcompetitive but cautious

Growth Velocity

5.0

Founder Strength

5.6

Product Quality

8.7

Revenue Strength

5.8

Monetization Maturity

5.0

Defensibility

9.6

Market Position

0.0

Operational Safety

10.0

💰 Revenue: Healthy — $280K - $1540K/mo · BIG tier · medium-low confidence, trajectory unclear.
⭐ Quality: 4.35★ across 13,212 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: Strong subscription moat. Hard to outcompete on retention. Better angle: free alternative with one-time purchase, or feature parity for an underserved sub-niche.

💵 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

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 5 of 5 triggers

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

Mid install base (13,212 ratings)METRIC		+$5,500
5 starREVIEW		+$1,800
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: Calloop: Color Phone Flash
Developer: Walloop
Bundle ID: com.luzapplications.alessio.calloop
App Store URL: Open in App Store
Category: Personalization
Content rating: Not found
Languages: Not found

Company

Website: walloop.com
Tagline: Not found
Description: Not found
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: $700K/mo
Top-grossing rank: Not found
All-time revenue: Not found
Pricing: $0.99 - $2.49 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.

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

Calloop – Color Call Themes & Flash Caller ID

Tired of the same boring call screen? ✨

Calloop makes every incoming call colorful, bright, and unique with:

🎨 HD Color Call Themes – full-screen designs that transform your caller screen.

💡 Flash & Edge Lighting Alerts – never miss a call thanks to rhythmic LED flashes.

🔔 Personal Ringtones – assign tones to your favorite contacts.

🛡️ (Coming soon) App Locker – protect apps with PIN or pattern.

🌆 (Coming soon) Matching Wallpapers – extend the style across your phone.

Why choose Calloop?… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 vVaries with device📂 Personalization💰 Free📺 Ad-supported💎 IAP $0.99 - $2.49 per item🚀 Launched 2018 (8y old)

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Calloop: Color Phone Flash: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →