Number Shield
71
Quality Score
Strong
Number Shield
Medium confidence
✍️ bumetric analysis
“
Number Shield is an iOS app from Kinnaman Software LLC in the Utilities category, currently rated 4.5★ across 1,816 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 71: Strong (healthy traction). For a Utilities 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
$8.6K
per month
→
12-mo forecast
$8.9K – $18.5K
per month
→
24-mo forecast
$11.0K – $32.9K
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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$45K
↳ What it cost to build · not monthly revenue
Likely range $35K – $60K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in <1 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 |
| ⚙ Utilities complexity ×0.85 | $-7575 |
Total estimate
$45K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$600K
↳ What it would sell for · not monthly revenue
Marketplace range $450K – $800K · 15× MRR multiple
💸
~13× return on build cost
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 |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Utilities category multiple | -10% |
Final multiple
15× MRR
👥 Estimated audience size
360K
Lifetime downloads (US-equivalent)
Monthly active
72K
Daily active
14K
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 |
| 🔁 Utilities D30 retention | 20% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
19% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$8.6K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$8.1K – $13.5K
12 months
$8.9K – $18.5K
24 months
$11.0K – $32.9K
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 · 48/100MID TIERunderperforming peersGrowth Velocity
5.0
Founder Strength
5.6
Product Quality
8.1
Revenue Strength
3.9
Monetization Maturity
1.0
Defensibility
4.1
Market Position
2.0
Operational Safety
9.0
- 💰 Revenue: Modest — $5K - $12K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.48★ across 1,816 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: last update 265d 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 = $154K-$273K. Portfolio play ($40K/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 ($0.00)METRIC | +$2,800 | |
| worth every pennyREVIEW | +$2,000 | |
| 5 starREVIEW | +$1,800 | |
| great valueREVIEW | +$1,600 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (1,816 ratings)METRIC | +$1,500 | |
| Mature app (8y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Good rating (4.5★)METRIC | +$800 | |
| Single-language (English only)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 · v3.3
Updated for iOS 26.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Number Shield
- Developer
- Kinnaman Software LLC
- Bundle ID
- com.AlanKinnaman.Number-Shield
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- EN
Company
- Website
- www.kinnamansoftware.com
- Tagline
- KINNAMAN SOFTWARE
- Description
- Mobile app development, with a focus on native iOS apps. Kinnaman Software provides innovative solutions for unique problems.
- 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
- $41.0K/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 growth1,816 ratings+12% lifetimeShow 3-year history estimate ▾
Tracked (59 weeks) Pre-tracking estimate (33 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 → $2.99 (+0%)
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 annoying scammers who hide behind fake phone numbers.
Do you get unwanted calls or text messages from phone numbers similar to your own? With Number Shield, block an entire group of numbers at once. Just enter a wildcard for each digit you want to block.
For example, if your number is 714-555-1234, scammers might use a number like 714-555-6789. Block all similar numbers by entering 714-555-####. Wildcards and numbers can be combined in any order you choose. Block international numbers, too!… View full description on the official store →
Do you get unwanted calls or text messages from phone numbers similar to your own? With Number Shield, block an entire group of numbers at once. Just enter a wildcard for each digit you want to block.
For example, if your number is 714-555-1234, scammers might use a number like 714-555-6789. Block all similar numbers by entering 714-555-####. Wildcards and numbers can be combined in any order you choose. Block international numbers, too!… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 9 MB🔞 4+📱 iOS 16.6+🔖 v3.3🔄 updated 0d ago🌐 EN📂 Utilities💰 Paid
📅
What Worked™ · Development Pipeline
14 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 →
2026-05
⭐
Rating ↑ 3.25 → 4.48 (improved 1.23★)
2026-05
📈
Crossed 500 ratings — social-proof flywheel kicking in
2026-05
💲
Went paid — introduced $2.99 price point
2026-03
⭐
Rating ↓ 4.10 → 3.25 (dropped 0.85★)
2026-03
⭐
Rating ↑ 3.26 → 4.10 (improved 0.84★)
2026-03
📈
Crossed 500 ratings — social-proof flywheel kicking in
2021-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
2019-08
📈
Crossed 50 ratings — social-proof flywheel kicking in
2018-09
📈
Crossed 10 ratings — social-proof flywheel kicking in
2018-08
⭐
Rating ↓ 4.50 → 4.11 (dropped 0.39★)
2018-05
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
2018-01
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2017-12
⭐
Rating ↓ 5.00 → 3.00 (dropped 2.00★)
2017-12
🚀
First tracked snapshot — initial data captured
🧪
Tech & Domain Intel — kinnamansoftware.com
- Mail provider
- Google Workspace
Derived from public RDAP + DNS TXT records (no scraping, no login).
🌍
Multi-Country Performance
Available in 7 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.24706★ | 85 | 4.24706★ this version |
| 🇧🇷 BR | 3.72368★ | 76 | 3.72368★ this version |
| 🇨🇦 CA | 4.47966★ | 123 | 4.47966★ this version |
| 🇬🇧 GB | 4.06838★ | 117 | 4.06838★ this version |
| 🇮🇳 IN | 4.41026★ | 78 | 4.41026★ this version |
| 🇯🇵 JP | 5★ | 3 | 5★ this version |
| 🇺🇸 US | 4.4694★ | 1,830 | 4.4694★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Number Shield: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Similar apps in Utilities
About this analysis
Why medium confidence: 1,816 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does Number Shield make per month?▴
Based on our ML-calibrated revenue forecast, Number Shield earns approximately $40K/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 Number Shield?▴
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.
Who makes Number Shield?▴
Number Shield is published by Kinnaman Software LLC 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 Number Shield's BU Score?▴
Number Shield has a BU Score of 71/100 (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.