SLYNUMBER
72
Quality Score
Strong
SLYNUMBER
Medium confidence
✍️ bumetric analysis
“
SLYNUMBER is an iOS app from MobileSphere, Ltd in the Social Networking category, currently rated 4.5★ across 2,468 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 72: Strong (healthy traction). For a Social Networking 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 tierSUBSCRIPTION
💡 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
$130K
↳ What it cost to build · not monthly revenue
Likely range $100K – $175K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~5 months 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 |
| 📦 Asset bundle (112 MB) | +$24K |
| ⚙ Social Networking complexity ×1.70 | +$52K |
Total estimate
$130K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$425K
↳ What it would sell for · not monthly revenue
Marketplace range $325K – $600K · 17× MRR multiple
💸
~3.3× 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% |
| 🏷 Social Networking category multiple | +5% |
Final multiple
17× MRR
👥 Estimated audience size
220K
Lifetime downloads (US-equivalent)
Monthly active
55K
Daily active
30K
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
| 📲 Social Networking engagement | ~90 installs / rating |
| 🔁 Social Networking D30 retention | 25% |
| 📍 DAU / MAU stickiness | 0.55 |
DAU / MAU
55% sticky
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
Direction
Tailwinds: monetization model proven
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 · 47/100MID TIERSUBSCRIPTIONunderperforming peersGrowth Velocity
5.0
Founder Strength
5.4
Product Quality
6.7
Revenue Strength
3.7
Monetization Maturity
9.5
Defensibility
5.4
Market Position
2.0
Operational Safety
0.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.55★ across 2,468 reviews — solid.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: Insufficient signal to assess trajectory.
- ⚠️ Risk: High — 8.4% refund mentions, 8% subscription complaints, scam/fraud mentions detected.
🎯 For competitors: Vulnerable. Quality drift + slow updates create a clear opening for a fresh competitor with active dev cadence.
💵 For acquirers: Estimated asking range 12-22× monthly = $60K-$110K. Portfolio play ($25K/mo combined) commands premium. Discount applied for operational risk..
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:
| subscriptionREVIEW | +$2,500 | |
| Excellent rating (4.5★)METRIC | +$2,200 | |
| bugsREVIEW | −$1,800 | |
| great valueREVIEW | +$1,600 | |
| cancelledREVIEW | −$1,500 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (2,468 ratings)METRIC | +$1,500 | |
| free trialREVIEW | +$1,200 | |
| support teamREVIEW | +$900 | |
| Established app (3y 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.
🆕 What's New · v3.3.3
This update includes some bug fixes.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- SLYNUMBER
- Developer
- MobileSphere, Ltd
- Bundle ID
- com.slynumber.ios
- App Store URL
- Open in App Store
- Category
- Social Networking
- Content rating
- 4+
- Languages
- EN, FR, PT, ES
Company
- Website
- Not found
- Tagline
- The best second phone number app
- Description
- Get a specific area code phone number for personal and or business use. Get your area code number today on SLYNUMBER!
- 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
- $25.4K/mo
- Top-grossing rank
- 🇮🇳#93 /100
- 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
- Socials
- instagram instagram.com/theslynumberapp · linkedin linkedin.com/company/mobilesphere · tiktok tiktok.com/@slynumberapp
- Not found
- Phone
- Not found
- Contact page
- slynumber.com/help-center
- About page
- Not found
📈Ratings growth2,468 ratings+253% lifetimeShow 3-year history estimate ▾
Tracked (54 weeks) Pre-tracking estimate (36 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution1 of 9 markets
🇮🇳
IN
Top-grossing rank: #93 / 100
Other markets
Outside top 100
in US, GB, DE, FR, JP, CA, AU, BR, IN
in US, GB, DE, FR, JP, CA, AU, BR, IN
This app currently ranks in only one of the 9 markets we monitor. Niche or regional apps often launch this way before global rollout. Rankings update daily.
📊Category Rank Trajectory#93 now · best #85 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
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
NOT TO BRAG, WE ARE THE BEST
SLYNUMBER is not just another second number app. SLYNUMBER is the ONLY provider on the market to offer real mobile numbers. We don't provide VoIP, fake phone numbers, or second lines that only work for a week. This distinction is crucial because many apps and online services do not accept VoIP numbers. SLYNUMBER works everywhere!… View full description on the official store →
SLYNUMBER is not just another second number app. SLYNUMBER is the ONLY provider on the market to offer real mobile numbers. We don't provide VoIP, fake phone numbers, or second lines that only work for a week. This distinction is crucial because many apps and online services do not accept VoIP numbers. SLYNUMBER works everywhere!… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 112 MB🔞 4+📱 iOS 17.0+🔖 v3.3.3🔄 updated 0d ago🌐 EN, FR, PT, ES📂 Social Networking💰 Paid
📅
What Worked™ · Development Pipeline
12 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
🔧
Shipped update — v? → v3.3.3
2026-04
⭐
Rating ↑ 2.34 → 4.56 (improved 2.22★)
2026-04
📈
Crossed 500 ratings — social-proof flywheel kicking in
2025-12
📈
Crossed 100 ratings — social-proof flywheel kicking in
2024-10
📈
Crossed 50 ratings — social-proof flywheel kicking in
2023-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
2023-02
⭐
Rating ↑ 2.80 → 3.17 (improved 0.37★)
2023-02
⭐
Rating ↑ 2.25 → 2.80 (improved 0.55★)
2023-01
⭐
Rating ↓ 2.67 → 2.25 (dropped 0.42★)
2022-12
⭐
Rating ↑ 1.50 → 2.67 (improved 1.17★)
2022-12
⭐
Rating ↑ 1.00 → 1.50 (improved 0.50★)
2022-10
🚀
First tracked snapshot — initial data captured
🗣
Voice of Customer
Based on 155 reviews across 4 markets● 46% positive · ● 8% neutral · ● 45% negative · Rating drift: -2.29★ (declining — recent 50: 2.26★ vs lifetime: 4.55★)
VADER compound sentiment per quarter (−1 = fully negative, +1 = fully positive). Each point ≥ 5 reviews.
Sentiment by country (−1 to +1)
🇮🇳 IN
+0.14
🇬🇧 GB
+0.09
🇺🇸 US
+0.09
🇨🇦 CA
-0.31
Top praise themes
phone number ×8 skype number ×3 works ×11 support ×9 work ×7 text ×6 service ×6 easy ×6
Top complaint themes
customer service ×10 doesn work ×10 phone number ×9 waste money ×9 customer support ×6 work whatsapp ×5 receive messages ×4 don waste ×4
Risk signals
Refund mentions: 8.4% Subscription complaints: 8% Bug mentions: 5% Fraud / scam mentions: 7.7%
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.88889★ | 9 | 4.88889★ this version |
| 🇧🇷 BR | 4.65217★ | 23 | 4.65217★ this version |
| 🇨🇦 CA | 3.96364★ | 55 | 3.96364★ this version |
| 🇩🇪 DE | 4.36364★ | 11 | 4.36364★ this version |
| 🇫🇷 FR | 4★ | 9 | 4★ this version |
| 🇬🇧 GB | 4.43478★ | 23 | 4.43478★ this version |
| 🇮🇳 IN | 4.4375★ | 48 | 4.4375★ this version |
| 🇯🇵 JP | 3★ | 2 | 3★ this version |
| 🇺🇸 US | 4.54718★ | 2,533 | 4.54718★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for SLYNUMBER: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
Similar apps in Social Networking
About this analysis
Why medium confidence: 2,468 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does SLYNUMBER make per month?▴
Based on our ML-calibrated revenue forecast, SLYNUMBER earns approximately $25K/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 SLYNUMBER?▴
Browse the full Social Networking 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 SLYNUMBER?▴
SLYNUMBER is published by MobileSphere, Ltd 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 SLYNUMBER's BU Score?▴
SLYNUMBER has a BU Score of 72/100 (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.