Slumber－Calm Stories for Sleep
79
Quality Score
Strong
✍️ Bumetric analysis
“
Slumber－Calm Stories for Sleep is an iOS app from Slumber Studios, LLC in the Health & Fitness category, currently rated 4.7★ across 26,251 ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.
Quality Score is 79: Strong (healthy traction). For a Health & Fitness 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
$1.2M
per month
→
12-mo forecast
$1.3M – $2.0M
per month
→
24-mo forecast
$1.5M – $2.8M
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
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
27 snapshots on record
Rating
4.7
Reviews
26,251 reviews
Forecast Revenue / mo
$1.2M
Snapshots tracked
27
since Mar 2026
ONE-TIME · BUILD
💰 Estimated build cost
$185K
↳ What it cost to build · not monthly revenue
Likely range $140K – $250K
$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 |
| 📦 Asset bundle (163 MB) | +$40K |
| ⚙ Health & Fitness complexity ×1.40 | +$36K |
| ⚙ 9.9y maintenance × ~1-person team | +$59K |
Total estimate
$185K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$27.5M
↳ What it would sell for · not monthly revenue
Marketplace range $20.5M – $35.5M · 23× MRR multiple
💸
~149× 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 |
| 📅 9.9y proven track record | +20% |
| ⭐ ★ rating ≥ 4.7 (premium) | +15% |
| 🏷 Health & Fitness category multiple | +10% |
Final multiple
23× MRR
👥 Estimated audience size
1.2M
Lifetime downloads (US-equivalent)
Monthly active
140K
Daily active
49K
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
| 📲 Health & Fitness engagement | ~70 installs / rating |
| 📅 9.9y of rating accumulation | -30% |
| 🔁 Health & Fitness D30 retention | 22% |
| 📍 DAU / MAU stickiness | 0.35 |
DAU / MAU
35% sticky
🛠 Estimated tech stack
🍎
Native iOS (Swift / UIKit)
Medium confidence · 60%
Also possible
React Native
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
| 📦 App bundle size | 163 MB |
| 🏷 Category context | Health & Fitness |
| 📦 Mid-large iOS bundle | → Likely native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Active
15%
Last shipped 2026-09-22 · 47 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 47 days since last update | Healthy release cadence |
Verdict
Active
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.2M/mo · ML-estimated from 234 triggers
Growth rate
+2.5% MoM · BIG tier baseline (compound monthly)
6 months
$1.2M – $1.6M
12 months
$1.3M – $2.0M
24 months
$1.5M – $2.8M
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 · 58/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
6.6
Product Quality
9.4
Revenue Strength
6.1
Monetization Maturity
1.0
Defensibility
6.0
Market Position
2.0
Operational Safety
10.0
- 💰 Revenue: Healthy — $480K - $2640K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.71★ across 26,251 reviews — exceptional (top 1% in category).
- 📍 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 = $21.6M-$38.4M.
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
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 7 of 7 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (26,251 ratings)METRIC | +$5,500 | |
| subscriptionREVIEW | +$2,500 | |
| premiumREVIEW | +$2,200 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| Mature app (9y old)METRIC | +$1,500 | |
| Ad-supported / freemiumMETRIC | +$600 | |
| 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 · v3.40.0
Featured: Star Tours series, The Sleepy History of Ancient Rome
Enjoying Slumber? Leave us a five-star review!
Enjoying Slumber? Leave us a five-star review!
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Slumber－Calm Stories for Sleep
- Developer
- Slumber Studios, LLC
- Bundle ID
- com.summermedia.slumber
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Today
- Description
- Find apps and games for iPhone, iPad, Mac, and more on the App Store.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $1.2M/mo
- Top-grossing rank
- Outside top 100 in US Health & Fitness
- 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 growth27,287 ratings+5% lifetimeShow 3-year history estimate ▾
Tracked (27 weeks) Pre-tracking estimate (0 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.
🚀Update Frequency · Releases per Quarter5 releases tracked
🚀Version Release Timeline5 releases tracked
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
◆ "The best sleep apps in 2024" - CNN Underscored ◆
◆ "Struggling to Sleep? Try These Bedtime-Story Apps" - The Wall Street Journal ◆
◆ "Protect And Boost Your Mental Health" - Forbes ◆
◆ "New Apps we Love" - Apple ◆
Trouble falling asleep? Try Slumber® for 5 minutes, and you'll be dreaming in no time.
Slumber is a collection of ultra-relaxing, sleep-inducing stories and meditations designed to beat insomnia and help you fall asleep quickly every single night.
Here's how it works:
◆ Choose a relaxing story or meditation to listen to as you fall asleep.… View full description on the official store →
◆ "Struggling to Sleep? Try These Bedtime-Story Apps" - The Wall Street Journal ◆
◆ "Protect And Boost Your Mental Health" - Forbes ◆
◆ "New Apps we Love" - Apple ◆
Trouble falling asleep? Try Slumber® for 5 minutes, and you'll be dreaming in no time.
Slumber is a collection of ultra-relaxing, sleep-inducing stories and meditations designed to beat insomnia and help you fall asleep quickly every single night.
Here's how it works:
◆ Choose a relaxing story or meditation to listen to as you fall asleep.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 163 MB🔞 4+📱 iOS 15+🔖 v3.40.0🔄 updated 1mo ago🌐 EN📂 Health & Fitness💰 Paid🚀 Launched 2016 (9y old)
📅
What Worked™ · Development Pipeline
5 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 →
2026-09
🔧
Shipped update — v3.39.0 → v3.40.0
→ 30 days after: reviews +237 high confidence
2026-07
🔧
Shipped update — v3.38.1 → v3.39.0
→ 30 days after: reviews +216 high confidence
2026-06
🔧
Shipped update — v3.38.0 → v3.38.1
→ 30 days after: reviews +266 high confidence
2026-05
🔧
Shipped update — v3.37.0 → v3.38.0
→ 30 days after: reviews +283 high confidence
2026-03
🚀
First tracked snapshot — initial data captured
→ 30 days after: reviews +291 high confidence
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.63802★ | 1,257 | 4.63802★ this version |
| 🇧🇷 BR | 4.75★ | 40 | 4.75★ this version |
| 🇨🇦 CA | 4.62065★ | 1,927 | 4.62065★ this version |
| 🇩🇪 DE | 4.53968★ | 63 | 4.53968★ this version |
| 🇫🇷 FR | 4.41859★ | 43 | 4.41859★ this version |
| 🇬🇧 GB | 4.6251★ | 5,172 | 4.6251★ this version |
| 🇮🇳 IN | 4.4516★ | 62 | 4.4516★ this version |
| 🇯🇵 JP | 4.61538★ | 13 | 4.61538★ this version |
| 🇺🇸 US | 4.7092★ | 27,432 | 4.7092★ this version |
🔔
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Slumber－Calm Stories for Sleep: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Slumber Studios, LLC
View all →📦 Portfolio summaryBIG studio
4apps·$3.6M/mocombined
✓ Diversified — top app contributes 33%; risk spread across portfolio
About this analysis
Why high confidence: 26,251 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Slumber－Calm Stories for Sleep make per month?▴
Based on our ML-calibrated revenue forecast, Slumber－Calm Stories for Sleep earns approximately $1.2M/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 Slumber－Calm Stories for Sleep profitable?▴
With estimated build cost $185K and monthly revenue $1.2M, Slumber－Calm Stories for Sleep 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 Slumber－Calm Stories for Sleep have?▴
Estimated audience: ~1.2M lifetime downloads, ~140K monthly active users, and ~49K 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 Slumber－Calm Stories for Sleep?▴
Browse the full Health & Fitness 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 Slumber－Calm Stories for Sleep built with?▴
Our heuristic places Slumber－Calm Stories for Sleep on the Native iOS (Swift / UIKit) stack (Medium confidence, 60%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: React Native, Flutter.
Is Slumber－Calm Stories for Sleep still actively maintained?▴
Maintenance status: Active (15% abandonment risk). Last shipped version was 1 months ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Slumber－Calm Stories for Sleep sell for?▴
Estimated acquisition value: $27.5M (marketplace range $20.5M – $35.5M). Calculated as 23× 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.
When was Slumber－Calm Stories for Sleep last updated?▴
Slumber－Calm Stories for Sleep last shipped a new version on 2026-09-22 — 1 months ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Slumber－Calm Stories for Sleep?▴
Slumber－Calm Stories for Sleep is published by Slumber Studios, 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 Slumber－Calm Stories for Sleep's BU Score?▴
Slumber－Calm Stories for Sleep has a BU Score of 79/100 (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.