Sleep Sounds
73
Quality Score
Strong
✍️ Bumetric analysis
“
Sleep Sounds is an iOS app from Anna Koynova in the Health & Fitness category, currently rated 4.7★ across 1,938 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 73: 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
49 snapshots on record
Rating
4.7
Reviews
1,938 reviews
Forecast Revenue / mo
$1.2M
Snapshots tracked
49
since Feb 2017
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 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 |
| ⚙ Health & Fitness complexity ×1.40 | +$20K |
| ⚙ 9.7y maintenance × ~1-person team | +$58K |
Total estimate
$130K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$25.5M
↳ What it would sell for · not monthly revenue
Marketplace range $19.0M – $33.5M · 21× MRR multiple
💸
~196× 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 |
| 📅 9.7y proven track record | +20% |
| ⭐ ★ rating ≥ 4.4 (solid) | +8% |
| 🏷 Health & Fitness category multiple | +10% |
Final multiple
21× MRR
👥 Estimated audience size
94K
Lifetime downloads (US-equivalent)
Monthly active
11K
Daily active
3.8K
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 |
| 📅 9.7y 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)
High confidence · 80%
Also possible
Native iOS (SwiftUI)
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 | 22 MB |
| 🏷 Category context | Health & Fitness |
| 📦 Compact iOS bundle | → Native Swift / UIKit (pre-2020 era) |
💀 Maintenance status
Likely abandoned
88%
Last shipped 2021-01-26 · 2069 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
| 📅 5y+ since last update | Likely abandoned |
Verdict
Likely abandoned
🔬
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 · 55/100BIG TIERcompetitive but cautiousGrowth Velocity
5.0
Founder Strength
7.4
Product Quality
8.4
Revenue Strength
6.1
Monetization Maturity
1.0
Defensibility
7.4
Market Position
2.0
Operational Safety
7.0
- 💰 Revenue: Healthy — $480K - $2640K/mo · BIG tier · medium-low confidence, trajectory unclear.
- ⭐ Quality: 4.66★ across 1,938 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 2064d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (2064d since update).
🎯 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 9 of 9 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 | |
| Excellent rating (4.7★)METRIC | +$2,200 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Low install base (1,938 ratings)METRIC | +$1,500 | |
| Mature app (9y old)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| Localized (6 languages)METRIC | +$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 · v1.9.1
Added Appstore description on new languages
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Sleep Sounds
- Developer
- Anna Koynova
- Bundle ID
- rb.it.SleepSoundsFull
- App Store URL
- Open in App Store
- Category
- Health & Fitness
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, RU, ES
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.
⭐Recent App Store Reviews49 latest · avg 4.39★ · 63.3% 5★ · 4.1% 1★
5★31 (63%)
4★11 (22%)
3★4 (8%)
2★1 (2%)
1★2 (4%)
+1 ratings/week
Praise: great ×13 love ×13 perfect ×5 best ×2 favorite ×1Complaints: subscription ×1 worst ×1
Top positive
★★★★★ Great App
This app is great. To make it better it will be nice to be available to mix some of the sound.…
★★★★★ Lots of choices and easy to use
Bought this awhile back but never reviewed it. Lots of sound choices. Straightforward interface. No ads. It’s worth the nominal price.…
Top negative
★☆☆☆☆ No
Should never have changed the home page. I’m deleting it…
★☆☆☆☆ The worst
I downloaded this app a few weeks ago because it was free and had a good star rating. I used it one night with thunderstorm audio and loved it.
Since then, it’s become one of those crap apps that wasn’t meant to live long. Never ending lo…
📈Ratings growth1,963 ratings+98050% lifetimeShow 3-year history estimate ▾
Tracked (49 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.
💰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
Sounds was recorded in most beautiful places around world.
All sounds recorded with high quality stereo condenser microphones and preamps. (besides generated sounds: white pink brown noises and binaural beats)
Additional features:
Auto off timer
Reliable alarm clock
Sounds:
white noise
pink noise
unicorn music box
teddy bear music box
ballerina music box
cat purring
morning forest
creek in forest
forest
tropical jungle with tree frogs
loro park
bonfire
heavy rain
heavy thunder
distant thunder
rain under umbrella
rain near window
light rain on street
rain on city street with traffic… View full description on the official store →
All sounds recorded with high quality stereo condenser microphones and preamps. (besides generated sounds: white pink brown noises and binaural beats)
Additional features:
Auto off timer
Reliable alarm clock
Sounds:
white noise
pink noise
unicorn music box
teddy bear music box
ballerina music box
cat purring
morning forest
creek in forest
forest
tropical jungle with tree frogs
loro park
bonfire
heavy rain
heavy thunder
distant thunder
rain under umbrella
rain near window
light rain on street
rain on city street with traffic… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 22 MB🔞 4+📱 iOS 13.1+🔖 v1.9.1🔄 updated 5y ago🌐 EN, FR, DE, IT, RU +1📂 Health & Fitness💰 Paid🚀 Launched 2017 (9y old)
📅
What Worked™ · Development Pipeline
11 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
💲
Went paid — introduced $2.99 price point
→ 30 days after: reviews +9 high confidence
2026-05
📈
Crossed 500 ratings — social-proof flywheel kicking in
→ 30 days after: reviews +9 high confidence
2017-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$2.7K/mo · reviews +46 medium · co-occurring
2017-09
📈
Crossed 100 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$4.1K/mo · rating −0.07★ · reviews +69 low · multiple changes
2017-06
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$827/mo · reviews +14 high confidence
2017-06
📈
Crossed 50 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$3.8K/mo · rating +0.28★ · reviews +64 high confidence
2017-05
📈
Crossed 10 ratings — social-proof flywheel kicking in
→ 30 days after: revenue +$3.0K/mo · rating +0.30★ · reviews +50 medium · co-occurring
2017-05
⭐
Rating ↓ 4.67 → 4.30 (dropped 0.37★)
→ 30 days after: revenue +$3.0K/mo · rating +0.30★ · reviews +50 medium · co-occurring
2017-05
⭐
Rating ↑ 4.00 → 4.33 (improved 0.33★)
→ 30 days after: revenue +$3.5K/mo · rating +0.60★ · reviews +58 low · multiple changes
2017-02
🚀
First tracked snapshot — initial data captured
2017-02
🚀
First tracked snapshot — initial data captured
🌍
Multi-Country Performance
Available in 9 of 9 monitored markets| Market | Rating | Reviews | Current version |
|---|---|---|---|
| 🇦🇺 AU | 4.61111★ | 72 | 4.61111★ this version |
| 🇧🇷 BR | 4.78946★ | 57 | 4.78946★ this version |
| 🇨🇦 CA | 4.55084★ | 118 | 4.55084★ this version |
| 🇩🇪 DE | 4.49143★ | 350 | 4.49143★ this version |
| 🇫🇷 FR | 4.43599★ | 289 | 4.43599★ this version |
| 🇬🇧 GB | 4.52137★ | 117 | 4.52137★ this version |
| 🇮🇳 IN | 4.92856★ | 14 | 4.92856★ this version |
| 🇯🇵 JP | 4.2716★ | 81 | 4.2716★ this version |
| 🇺🇸 US | 4.65736★ | 1,970 | 4.65736★ this version |
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📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Sleep Sounds: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by Anna Koynova
View all →📦 Portfolio summaryBIG studio
7apps·$1.2M/mocombined
⚠ Concentrated — top app contributes 97% of combined revenue (single-app dependency)
About this analysis
Why medium confidence: 1,938 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Sleep Sounds make per month?▴
Based on our ML-calibrated revenue forecast, Sleep Sounds 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 Sleep Sounds profitable?▴
With estimated build cost $130K and monthly revenue $1.2M, Sleep Sounds 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 Sleep Sounds have?▴
Estimated audience: ~94K lifetime downloads, ~11K monthly active users, and ~3K 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 Sleep Sounds?▴
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 Sleep Sounds built with?▴
Our heuristic places Sleep Sounds on the Native iOS (Swift / UIKit) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Native iOS (SwiftUI).
Is Sleep Sounds still actively maintained?▴
Maintenance status: Likely abandoned (88% abandonment risk). Last shipped version was 5+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Sleep Sounds sell for?▴
Estimated acquisition value: $25.5M (marketplace range $19.0M – $33.5M). Calculated as 21× 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 Sleep Sounds last updated?▴
Sleep Sounds last shipped a new version on 2021-01-26 — more than 5 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Sleep Sounds?▴
Sleep Sounds is published by Anna Koynova 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 Sleep Sounds's BU Score?▴
Sleep Sounds has a BU Score of 73/100 (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.