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65
BU Score
Solid

Schlafwissenschaft HQ: Wecker

4.5 ✍️ Editor
✍️ BU Analytics Review

Schlafwissenschaft HQ: Wecker is an iOS app from Phase4 Mobile in the Education category, currently rated 4.5★ across 94 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 65Solid (established niche player). For a Education app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
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 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
5 starREVIEW
+$1,800
excellent appREVIEW
+$1,500
Mature app (10y old)METRIC
+$1,500
Multilingual (11 languages)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
Good rating (4.5★)METRIC
+$800
Pre-traction phase (94 ratings)METRIC
−$300
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 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.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 102 MB🔞 4+📱 iOS 15.0+🔖 v3.5🔄 updated 3mo ago🌐 NL, EN, FR, DE, IT +6📂 Education💰 Paid🚀 Launched 2015 (10y old)

📝 About this app

Wake up gently, track and improve your sleep. Feel refreshed and rejuvenated every morning!

Tired of being jarred awake? Wake up to over 750 high-quality natural sounds from around the world. Create your own perfect wake-up sequences of 6 different natural sounds. You could begin with soothing rain, progress to ocean waves and morning bird calls, and, if those don't work, be roused by Japanese drums and rolling church bells.

With over 750 sounds and fully programmable play times, you have virtually endless possibilities to customize your wake-up experience. You’ll start your day well-rested and full of energy.

Want to get 7, 8 or more hours of sleep every night? Sleep Science tracks your sleep each night and helps you achieve your personal sleep goal.

Want to understand your sleep over time? Sleep Science provides meaningful graphs over weeks, months and years so you can see how your sleep improves.

Want to learn what affects your sleep? Sleep Science lets you record notes about changes in bed-time routine, exercise, stress, and more. You can even put notes on your sleep graphs.

Not sure what wakes you up? Sleep Science records the loudest sound during the night so you can find out.

Do you forget your dreams? Sleep Science lets you record dreams during the night or when you wake up. You can review them weeks, months or years later.

From the creators of popular Rain Sounds HQ, White Noise HQ and Sleep Sounds HQ sleep sound apps, we’ve packed all this capability into a simple and beautiful app that works!

Sleep Science HQ features:
• Over 750 high-quality, natural wake-up sounds recorded on location around the world.
• Customizable wake-up sequences of up to 6 different sounds, with play time, strobe and vibration options.
• Graphs that show your sleep and wake activity during the night.
• Log and graphs of your actual sleep time vs your personal sleep goal.
• Daily notes for recording dreams and changes to daily and bedtime routines.
• Sleep graphs over weeks/months/years that show sleep statistics, trends and notes.
• Gentle wake up during light sleep, 0-30min before your alarm time.
• Captures the loudest sound during the night.
• 22 sound categories, including: Rain, Ocean, Rivers & Streams, Crickets, Wind Chimes, Lakes, Wind, Water Fountains, Fire, Birds, Animals, Cars, Trains & Planes, Public Places, Household, Bells, Industrial, Soundscapes, Drums and more...
• Modern easy-to-use interface, optimized for nighttime and wake up.

Download Sleep Science HQ now.

🆕 What's New · v3.5

• Bug fixes and performance improvements.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Schlafwissenschaft HQ: Wecker
Developer
Phase4 Mobile
Bundle ID
com.phase4mobile.sleepsciencealarmclockhq
App Store URL
Open in App Store
Category
Education
Content rating
4+
Languages
NL, EN, FR, DE, IT, JA, PT, RU, ZH, ES, SV

Company

Website
www.phase4mobile.com
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
$20.5K/mo
Top-grossing rank
Outside top 100 in US Education
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth94 ratings+262% lifetimeShow 3-year history estimate ▾Jul 2015Aug 2019May 2026
Tracked (50 weeks) Pre-tracking estimate (37 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.
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.
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