How much does Spark Voicemail make per month?

Based on our ML-calibrated revenue forecast, Spark Voicemail earns approximately $388/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 Spark Voicemail?

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 Spark Voicemail?

Spark Voicemail is published by NORWOOD SYSTEMS (AUST) PTY LTD 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 Spark Voicemail's BU Score?

Spark Voicemail has a BU Score of 49/100 (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.

Spark Voicemail

Quality Score

Emerging

Spark Voicemail

Name: Spark Voicemail — app revenue, audience, build cost & risk profile
Creator: bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Spark Voicemail revenue, Spark Voicemail app analytics, mobile app revenue estimate, Communication revenue, Android app revenue

by NORWOOD SYSTEMS (AUST) PTY LTD

Medium confidence

3.4 ✍️ Editor

✍️ bumetric analysis

“

Spark Voicemail is an Android app from NORWOOD SYSTEMS (AUST) PTY LTD in the Communication category, currently rated 3.4★ across 947 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 49: Emerging (early traction worth watching). For a Communication 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

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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

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Rating

—

Reviews

—

Forecast Revenue / mo

—

Snapshots tracked

since first record

ONE-TIME · BUILD 💰 Estimated build cost

$130K

↳ What it cost to build · not monthly revenue

Likely range $100K – $175K

$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
⚙ Communication complexity ×1.65	+$32K
🌐 Cross-platform reach (iOS + Android)	+$45K

Total estimate $130K

👥 Estimated audience size

89K

Lifetime downloads (US-equivalent)

Monthly active

26K

Daily active

15K

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 58% sticky

🔬

How we forecast this revenue

LOW CONFIDENCE

Baseline

$500/mo · ML-estimated from 234 triggers

Growth rate

+6.0% MoM · INDIE tier baseline (compound monthly)

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 · 38/100INDIE TIERlimited signal

Growth Velocity

5.0

Founder Strength

4.6

Product Quality

4.8

Revenue Strength

2.7

Monetization Maturity

1.0

Defensibility

4.9

Market Position

0.0

Operational Safety

7.0

💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
⭐ Quality: 3.42★ across 947 reviews — below category median.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: last update 305d ago — slow cadence.
⚠️ Risk: Moderate — 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 = $9K-$16K. Portfolio play ($815/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

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:

Below-average rating (3.4★)METRIC		−$1,500
Established app (5y old)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (947 ratings)METRIC		+$400

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: Spark Voicemail
Developer: NORWOOD SYSTEMS (AUST) PTY LTD
Bundle ID: com.norwood.sparkvm
App Store URL: Open in App Store
Category: Communication
Content rating: Not found
Languages: Not found

Company

Website: www.spark.co.nz
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: $115/mo
Top-grossing rank: Not found
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 growth947 ratings+73% 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

Spark Voicemail revolutionises your voicemail experience, making it effortless to retrieve and respond to voicemails.

Spark Pay Monthly mobile users can install and use the Spark Voicemail app for free as part of their plan. Spark Prepay users need to activate the ‘Voicemail Unlimited’ extra for $1 per 4 weeks, which offers unlimited App and Voicemail use.

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Please note: To use Spark Voicemail, you must be a Spark mobile customer.

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KEY FEATURES:

READ YOUR VOICEMAIL VISUALLY

You can read automatic transcripts of your voicemail.… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v4.0.37🔄 updated 0d ago📂 Communication💰 Free

🧪

Tech & Domain Intel — spark.co.nz

Mail provider: Microsoft 365
Tech stack: Microsoft 365 · AWS SES · Anthropic · Apple Pay / Sign in with Apple · Atlassian (Jira/Confluence) · Google Workspace

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

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

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

Read deep-dive →