61
BU Score
Solid
Чиста Хвиля - Чистий Динамік
✍️ BU Analytics Review
“
Чиста Хвиля - Чистий Динамік is an iOS app from David Krejci in the Utilities category, currently rated 4.4★ across 2,500 ratings. Initial signal reads as mostly critical sentiment so far — users flag rough edges and unmet expectations.
Our BU Score puts it at 61 — Solid (established niche player). For a Utilities app, that means established niche player.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
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 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Low install base (2,500 ratings)METRIC | +$1,500 | |
| Multilingual (25 languages)METRIC | +$1,500 | |
| annoying adsREVIEW | −$1,100 | |
| Good rating (4.4★)METRIC | +$800 | |
| Established app (5y 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.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jan 25
Feb 25
Mar 25
May 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Mar 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 92 MB🔞 4+📱 iOS 13.0+🔖 v5.19🔄 updated 1y ago🌐 AR, AZ, BE, BG, CS +20📂 Utilities💰 Free🚀 Launched 2021 (5y old)
📝 About this app
A simple and intuitive application that allows you to play sounds, clean speaker at a strictly defined frequency by a clean wave speaker shortcut. It is an all around good speaker cleaner. It allows you to play any frequency ranging from 0Hz to 25kHz.
Key features:
• Noise meter: find out how loud you can be.
• Speaker tester: test your speakers by playing quality audio to hear the crisp and clean sound.
• Player: play a sound of strictly defined frequencies automatically. Just press the button below to start.
• Manual frequency generator: play any frequency manually. Press the sine, triangle, square or sawtooth button to change the wave type.
IMPORTANT NOTES:
• Position your smartphone facing screen down.
• Turn up volume to the max.
• Disconnect headphones if connected.
• If noise meter denies access to micophone. Go to settings > privacy > microphone and allow the microphone for this clean wave - clear speaker app there.
Clean Wave - Clear speaker lets you play with sound and explore many different possibilites. Play clean tunes in this clear speaker cleaner wave sound app. Scroll through tabs of features and enjoy. This app is going to help you... :)
EULA: https://dczt.dev/eula-terms-of-use.html
Privacy Policy: https://dczt.dev/app-privacy-policy.html
Key features:
• Noise meter: find out how loud you can be.
• Speaker tester: test your speakers by playing quality audio to hear the crisp and clean sound.
• Player: play a sound of strictly defined frequencies automatically. Just press the button below to start.
• Manual frequency generator: play any frequency manually. Press the sine, triangle, square or sawtooth button to change the wave type.
IMPORTANT NOTES:
• Position your smartphone facing screen down.
• Turn up volume to the max.
• Disconnect headphones if connected.
• If noise meter denies access to micophone. Go to settings > privacy > microphone and allow the microphone for this clean wave - clear speaker app there.
Clean Wave - Clear speaker lets you play with sound and explore many different possibilites. Play clean tunes in this clear speaker cleaner wave sound app. Scroll through tabs of features and enjoy. This app is going to help you... :)
EULA: https://dczt.dev/eula-terms-of-use.html
Privacy Policy: https://dczt.dev/app-privacy-policy.html
🆕 What's New · v5.19
This version includes:
• performance updates
• more manual control
• fixed essential bugs
• added more precision in measuring noise
• speaker cleaner performance works better
• performance updates
• more manual control
• fixed essential bugs
• added more precision in measuring noise
• speaker cleaner performance works better
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Чиста Хвиля - Чистий Динамік
- Developer
- David Krejci
- Bundle ID
- com.DCZT.SpeakerCleaner
- App Store URL
- Open in App Store
- Category
- Utilities
- Content rating
- 4+
- Languages
- AR, AZ, BE, BG, CS, EN, FR, DE, EL, HE, HI, HU, KK, KO, PL, PT, RO, RU, SK, ES, TH, TR, UK, UZ, VI
Company
- Website
- Not found
- Tagline
- 15,000,000
- Description
- The DCZT website aims to show all DCZT games & apps in one place! This app provides info about all of DCZT's software and makes them globally available.
- 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
- $352/mo
- Top-grossing rank
- Outside top 100 in US Utilities
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- 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
- youtube
- david.kolp97@gmail.com
- Phone
- Not found
- Contact page
- Not found
- About page
- https://dczt.dev/about-me.html
📈Ratings growth2,500 ratings+11264% lifetimeShow 3-year history estimate ▾
Tracked (59 weeks) Pre-tracking estimate (36 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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